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NMR technique for determining the depth of shallow nitrogen-vacancy centers in diamond

Physical Review B 2016年第4期93卷 045425-045425页

作者： Linh M. Pham Stephen J. DeVience Francesco Casola Igor Lovchinsky Alexander O. Sushkov Eric Bersin Junghyun Lee Elana Urbach Paola Cappellaro Hongkun Park Amir Yacoby Mikhail Lukin Ronald L. Walsworth Harvard-Smithsonian Center for Astrophysics 60 Garden St. Cambridge Massachusetts 02138 USA Department of Chemistry and Chemical Biology Harvard University 12 Oxford St. Cambridge Massachusetts 02138 USA Department of Physics Harvard University 17 Oxford St. Cambridge Massachusetts 02138 USA Department of Physics Massachusetts Institute of Technology 77 Massachusetts Ave Cambridge Massachusetts 02139 USA Department of Nuclear Science and Engineering Massachusetts Institute of Technology 77 Massachusetts Ave Cambridge Massachusetts 02139 USA Center for Brain Science Harvard University 52 Oxford St. Cambridge Massachusetts 02138 USA School of Engineering and Applied Sciences Harvard University 15 Oxford St. Cambridge Massachusetts 02138 USA

We demonstrate a robust experimental method for determining the depth of individual shallow nitrogen-vacancy (NV) centers in diamond with ∼1 nm uncertainty. We use a confocal microscope to observe single NV centers and detect the proton nuclear magnetic resonance (NMR) signal produced by objective immersion oil, which has well understood nuclear spin properties, on the diamond surface. We determine the NV center depth by analyzing the NV NMR data using a model that describes the interaction of a single NV center with the statistically polarized proton spin bath. We repeat this procedure for a large number of individual, shallow NV centers and compare the resulting NV depths to the mean value expected from simulations of the ion implantation process used to create the NV centers, with reasonable agreement.

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Correlations in Scattered X-Ray Laser Pulses Reveal Nanoscale Structural Features of Viruses

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Physical Review Letters 2017年第15期119卷 158102-158102页

作者： Ruslan P. Kurta Jeffrey J. Donatelli Chun Hong Yoon Peter Berntsen Johan Bielecki Benedikt J. Daurer Hasan DeMirci Petra Fromme Max Felix Hantke Filipe R. N. C. Maia Anna Munke Carl Nettelblad Kanupriya Pande Hemanth K. N. Reddy Jonas A. Sellberg Raymond G. Sierra Martin Svenda Gijs van der Schot Ivan A. Vartanyants Garth J. Williams P. Lourdu Xavier Andrew Aquila Peter H. Zwart Adrian P. Mancuso European XFEL GmbH Holzkoppel 4 D-22869 Schenefeld Germany Mathematics Department Lawrence Berkeley National Laboratory 1 Cyclotron Road Berkeley California 94720 USA Center for Advanced Mathematics for Energy Research Applications 1 Cyclotron Road Berkeley California 94720 USA Linac Coherent Light Source SLAC National Accelerator Laboratory 2575 Sand Hill Road Menlo Park California 94025 USA Australian Research Council Centre of Excellence in Advanced Molecular Imaging La Trobe Institute for Molecular Science La Trobe University Melbourne 3086 Australia Laboratory of Molecular Biophysics Department of Cell and Molecular Biology Uppsala University SE-751 24 Uppsala Sweden Biosciences Division SLAC National Accelerator Laboratory 2575 Sand Hill Road Menlo Park California 94025 USA Stanford PULSE Institute SLAC National Accelerator Laboratory 2575 Sand Hill Road Menlo Park California 94025 USA Biodesign Center for Applied Structural Discovery and School of Molecular Sciences Arizona State University Tempe Arizona 85287-1604 USA NERSC Lawrence Berkeley National Laboratory Berkeley California 94720 USA Division of Scientific Computing Science for Life Laboratory Department of Information Technology Uppsala University SE-751 05 Uppsala Sweden Molecular Biophysics and Integrated Bioimaging Lawrence Berkeley National Laboratory 1 Cyclotron Road Berkeley California 94720 USA Biomedical and X-Ray Physics Department of Applied Physics AlbaNova University Center KTH Royal Institute of Technology Stockholm SE-106 91 Sweden Deutsches Elektronen-Synchrotron DESY Notkestraße 85 D-22607 Hamburg Germany National Research Nuclear University MEPhI (Moscow Engineering Physics Institute) Kashirskoe shosse 31 115409 Moscow Russia NSLS-II Brookhaven National Laboratory P.O. Box 5000 Upton New York 11973 USA Center for Free-Electron Laser Science Deutsches Elektronen-Synchrotron DESY Notkestraße 85 22607 Hamburg Germany Max-Planck Institute for the Structure and Dy

We use extremely bright and ultrashort pulses from an x-ray free-electron laser (XFEL) to measure correlations in x rays scattered from individual bioparticles. This allows us to go beyond the traditional crystallography and single-particle imaging approaches for structure investigations. We employ angular correlations to recover the three-dimensional (3D) structure of nanoscale viruses from x-ray diffraction data measured at the Linac Coherent Light Source. Correlations provide us with a comprehensive structural fingerprint of a 3D virus, which we use both for model-based and ab initio structure recovery. The analyses reveal a clear indication that the structure of the viruses deviates from the expected perfect icosahedral symmetry. Our results anticipate exciting opportunities for XFEL studies of the structure and dynamics of nanoscale objects by means of angular correlations.

关键词： Biomolecular structure Viruses Coherent X-ray scattering Femtosecond laser irradiation X-ray imaging

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Search for neutrinoless β+EC decay of 120Te with CUORE-0

arXiv

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arXiv 2017年

作者： Alduino, C. Alfonso, K. Artusa, D.R. Avignone, F.T. Azzolini, O. Bari, G. Bellini, F. Benato, G. Bersani, A. Biassoni, M. Branca, A. Brofferio, C. Bucci, C. Camacho, A. Caminata, A. Canonica, L. Cao, X.G. Capelli, S. Cappelli, L. Cardani, L. Carniti, P. Casali, N. Cassina, L. Chiesa, D. Chott, N. Clemenza, M. Copello, S. Cosmelli, C. Cremonesi, O. Creswick, R.J. Cushman, J.S. D’Addabbo, A. D’Aguanno, D. Dafinei, I. Davis, C.J. Dell’Oro, S. Deninno, M.M. Di Domizio, S. Di Vacri, M.L. Drobizhev, A. Fang, D.Q. Faverzani, M. Ferri, E. Ferroni, F. Fiorini, E. Franceschi, M.A. Freedman, S.J. Giachero, A. Gironi, L. Giuliani, A. Gladstone, L. Gorla, P. Gotti, C. Gutierrez, T.D. Han, K. Heeger, K.M. Hennings-Yeomans, R. Huang, H.Z. Keppel, G. Kolomensky, Yu.G. Leder, A. Ligi, C. Lim, K.E. Ma, Y.G. Marini, L. Martinez, M. Maruyama, R.H. Mei, Y. Moggi, N. Morganti, S. Mosteiro, P.J. Nagorny, S.S. Napolitano, T. Nastasi, M. Nones, C. Norman, E.B. Novati, V. Nucciotti, A. O’Donnell, T. Ouellet, J.L. Pagliarone, C.E. Pallavicini, M. Palmieri, V. Pattavina, L. Pavan, M. Pessina, G. Pira, C. Pirro, S. Pozzi, S. Previtali, E. Rosenfeld, C. Rusconi, C. Sakai, M. Sangiorgio, S. Santone, D. Schmidt, B. Schmidt, J. Scielzo, N.D. Singh, V. Sisti, M. Terranova, F. Tomei, C. Vignati, M. Wagaarachchi, S.L. Wang, B.S. Wang, H.W. Welliver, B. Wilson, J. Winslow, L.A. Wise, T. Woodcraft, A. Zanotti, L. Zhang, G.Q. Zimmermann, S. Zucchelli, S. Department of Physics and Astronomy University of South Carolina ColumbiaSC29208 United States Department of Physics and Astronomy University of California Los AngelesCA90095 United States I-67100 Italy INFN – Laboratori Nazionali di Legnaro Legnaro [PadovaI-35020 Italy INFN – Sezione di Bologna BolognaI-40127 Italy Dipartimento di Fisica Sapienza Università di Roma RomaI-00185 Italy INFN – Sezione di Roma RomaI-00185 Italy Department of Physics University of California BerkeleyCA94720 United States INFN – Sezione di Genova Genova I16146 Italy Dipartimento di Fisica Università di Milano-Bicocca MilanoI-20126 Italy INFN – Sezione di Milano Bicocca MilanoI-20126 Italy INFN – Sezione di Padova PadovaI-35131 Italy Dipartimento di Fisica e Astronomia Università di Padova PadovaI-35131 Italy Massachusetts Institute of Technology CambridgeMA02139 United States Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai201800 China Nuclear Science Division Lawrence Berkeley National Laboratory BerkeleyCA94720 United States Dipartimento di Fisica Università di Genova GenovaI-16146 Italy Department of Physics Yale University New HavenCT06520 United States Dipartimento di Ingegneria Civile e Meccanica Università degli Studi di Cassino e del Lazio Meridionale CassinoI-03043 Italy Center for Neutrino Physics Virginia Polytechnic Institute and State University BlacksburgVA24061 United States INFN – Gran Sasso Science Institute L’AquilaI-67100 Italy Dipartimento di Scienze Fisiche e Chimiche Università dell’Aquila L’AquilaI-67100 Italy INFN – Laboratori Nazionali di Frascati Frascati [RomaI-00044 Italy CSNSM Univ. Paris-Sud CNRS/IN2P3 Universit Paris-Saclay Orsay91405 France Physics Department California Polytechnic State University San Luis ObispoCA93407 United States INPAC and School of Physics and Astronomy Shanghai Jiao Tong University Shanghai Laboratory for Particle Physics and Cosmology Shanghai200240 Ch

We have performed a search for neutrinoless β+EC decay of 120Te using the final CUORE-0 data release. We describe a new analysis method for the simultaneous fit of signatures with different event topology, and of data subsets with different signal efficiency, obtaining a limit on the half-life of the decay of T1/2 > 1.6 · 1021 yr at 90% CI. Combining this with results from Cuoricino, a predecessor experiment, we obtain the strongest limit to date, corresponding to T1/2 > 2.7 · 1021 yr at 90% CI. Copyright © 2017, The Authors. All rights reserved.

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Cross section and transverse single-spin asymmetry of muons from open heavy-flavor decays in polarized p+p collisions at s=200 GeV

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Physical Review D 2017年第11期95卷 112001-112001页

作者： C. Aidala N. N. Ajitanand Y. Akiba R. Akimoto J. Alexander M. Alfred K. Aoki N. Apadula H. Asano E. T. Atomssa T. C. Awes C. Ayuso B. Azmoun V. Babintsev A. Bagoly M. Bai X. Bai B. Bannier K. N. Barish S. Bathe V. Baublis C. Baumann S. Baumgart A. Bazilevsky M. Beaumier R. Belmont A. Berdnikov Y. Berdnikov D. Black D. S. Blau M. Boer J. S. Bok K. Boyle M. L. Brooks J. Bryslawskyj H. Buesching V. Bumazhnov C. Butler S. Butsyk S. Campbell V. Canoa Roman C.-H. Chen C. Y. Chi M. Chiu I. J. Choi J. B. Choi S. Choi P. Christiansen T. Chujo V. Cianciolo B. A. Cole M. Connors N. Cronin N. Crossette M. Csanád T. Csörgő T. W. Danley A. Datta M. S. Daugherity G. David K. DeBlasio K. Dehmelt A. Denisov A. Deshpande E. J. Desmond L. Ding J. H. Do L. D’Orazio O. Drapier A. Drees K. A. Drees M. Dumancic J. M. Durham A. Durum T. Elder T. Engelmore A. Enokizono S. Esumi K. O. Eyser B. Fadem W. Fan N. Feege D. E. Fields M. Finger M. Finger, Jr. F. Fleuret S. L. Fokin J. E. Frantz A. Franz A. D. Frawley Y. Fukao Y. Fukuda T. Fusayasu K. Gainey C. Gal P. Garg A. Garishvili I. Garishvili H. Ge F. Giordano A. Glenn X. Gong M. Gonin Y. Goto R. Granier de Cassagnac N. Grau S. V. Greene M. Grosse Perdekamp Y. Gu T. Gunji H. Guragain T. Hachiya J. S. Haggerty K. I. Hahn H. Hamagaki S. Y. Han J. Hanks S. Hasegawa T. O. S. Haseler K. Hashimoto R. Hayano X. He T. K. Hemmick T. Hester J. C. Hill K. Hill R. S. Hollis K. Homma B. Hong T. Hoshino N. Hotvedt J. Huang S. Huang T. Ichihara Y. Ikeda K. Imai Y. Imazu J. Imrek M. Inaba A. Iordanova D. Isenhower A. Isinhue Y. Ito D. Ivanishchev B. V. Jacak S. J. Jeon M. Jezghani Z. Ji J. Jia X. Jiang B. M. Johnson K. S. Joo V. Jorjadze D. Jouan D. S. Jumper J. Kamin S. Kanda B. H. Kang J. H. Kang J. S. Kang D. Kapukchyan J. Kapustinsky S. Karthas D. Kawall A. V. Kazantsev J. A. Key V. Khachatryan P. K. Khandai A. Khanzadeev K. M. Kijima C. Kim D. J. Kim E.-J. Kim M. Kim M. H. Kim Y.-J. Kim Y. K. Kim D. Kincses E. Kistenev J. Klatsky D. Kleinjan P. Kline T. Koblesky M. Kofarago B. Komkov J. Koster D. Ko Los Alamos National Laboratory Los Alamos New Mexico 87545 USA Department of Physics University of Michigan Ann Arbor Michigan 48109-1040 USA Chemistry Department Stony Brook University SUNY Stony Brook New York 11794-3400 USA RIKEN Nishina Center for Accelerator-Based Science Wako Saitama 351-0198 Japan RIKEN BNL Research Center Brookhaven National Laboratory Upton New York 11973-5000 USA Center for Nuclear Study Graduate School of Science University of Tokyo 7-3-1 Hongo Bunkyo Tokyo 113-0033 Japan Department of Physics and Astronomy Howard University Washington DC 20059 USA KEK High Energy Accelerator Research Organization Tsukuba Ibaraki 305-0801 Japan Iowa State University Ames Iowa 50011 USA Department of Physics and Astronomy Stony Brook University SUNY Stony Brook New York 11794-3800 USA Kyoto University Kyoto 606-8502 Japan Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA Physics Department Brookhaven National Laboratory Upton New York 11973-5000 USA IHEP Protvino State Research Center of Russian Federation Institute for High Energy Physics Protvino 142281 Russia ELTE Eötvös Loránd University H-1117 Budapest Pázmány P. s. 1/A Hungary Collider-Accelerator Department Brookhaven National Laboratory Upton New York 11973-5000 USA Science and Technology on Nuclear Data Laboratory China Institute of Atomic Energy Beijing 102413 People’s Republic of China University of California–Riverside Riverside California 92521 USA Baruch College City University of New York New York New York 10010 USA PNPI Petersburg Nuclear Physics Institute Gatchina Leningrad region 188300 Russia University of Colorado Boulder Colorado 80309 USA Vanderbilt University Nashville Tennessee 37235 USA Saint Petersburg State Polytechnic University St. Petersburg 195251 Russia National Research Center “Kurchatov Institute” Moscow 123098 Russia New Mexico State University Las Cruces New Mexico 88003 USA Georgia State University Atlanta Georgia 30303

The cross section and transverse single-spin asymmetries of μ− and μ+ from open heavy-flavor decays in polarized p+p collisions at s=200 GeV were measured by the PHENIX experiment during 2012 at the Relativistic Heavy Ion Collider. Because heavy-flavor production is dominated by gluon-gluon interactions at s=200 GeV, these measurements offer a unique opportunity to obtain information on the trigluon correlation functions. The measurements are performed at forward and backward rapidity (1.4<|y|<2.0) over the transverse momentum range of 1.25

关键词： Particle interactions Relativistic heavy-ion collisions Spin polarization Muons

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Numerical modeling of thermal loading of diamond crystal in X-ray FEL oscillators

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Chinese physics. C 2016年第4期40卷 048101-01-048101-01-048101-05页

作者： Song Meiqi Zhang Qingmin Guo Yuhang Li Kai Deng Haixiao Department of Nuclear Science and Technology School of Energy and Power Engineering Xi'an Jiaotong University Xi'an 710049 Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai 201800

Due to high reflectivity and high resolution of X-ray pulses, diamond is one of the most popular Bragg crystals serving as the reflecting mirror and mono—chromator in the next generation of free electron lasers (FELs). The energy deposition of X-rays will result in thermal heating, and thus lattice expansion of the diamond crystal, which may degrade the performance of X-ray FELs. In this paper, the thermal loading effect of diamond crystal for X-ray FEL oscillators has been systematically studied by combined simulation with Geant4 and ANSYS, and its dependence on the environmental temperature, crystal size, X-ray pulse repetition rate and pulse energy are presented. Our results show that taking the thermal loading effects into account, X-ray FEL oscillators are still robust and promising with an optimized design.

关键词： X-ray pulse diamond crystal energy deposition X-ray FEL oscillator

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B-meson production at forward and backward rapidity in p+p and Cu + Au collisions at sNN=200 GeV

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Physical Review C 2017年第6期96卷 064901-064901页

作者： C. Aidala N. N. Ajitanand Y. Akiba R. Akimoto J. Alexander M. Alfred V. Andrieux K. Aoki N. Apadula H. Asano E. T. Atomssa T. C. Awes C. Ayuso B. Azmoun V. Babintsev A. Bagoly M. Bai X. Bai N. S. Bandara B. Bannier K. N. Barish S. Bathe V. Baublis C. Baumann S. Baumgart A. Bazilevsky M. Beaumier R. Belmont A. Berdnikov Y. Berdnikov D. Black D. S. Blau M. Boer J. S. Bok K. Boyle M. L. Brooks J. Bryslawskyj H. Buesching V. Bumazhnov C. Butler S. Butsyk S. Campbell V. Canoa Roman R. Cervantes C.-H. Chen C. Y. Chi M. Chiu I. J. Choi J. B. Choi S. Choi P. Christiansen T. Chujo V. Cianciolo Z. Citron B. A. Cole M. Connors N. Cronin N. Crossette M. Csanád T. Csörgő T. W. Danley A. Datta M. S. Daugherity G. David K. DeBlasio K. Dehmelt A. Denisov A. Deshpande E. J. Desmond L. Ding A. Dion D. Dixit J. H. Do L. D'Orazio O. Drapier A. Drees K. A. Drees M. Dumancic J. M. Durham A. Durum T. Elder T. Engelmore A. Enokizono H. En'yo S. Esumi K. O. Eyser B. Fadem W. Fan N. Feege D. E. Fields M. Finger M. Finger, Jr. F. Fleuret S. L. Fokin J. E. Frantz A. Franz A. D. Frawley Y. Fukao Y. Fukuda T. Fusayasu K. Gainey C. Gal P. Gallus P. Garg A. Garishvili I. Garishvili H. Ge F. Giordano A. Glenn X. Gong M. Gonin Y. Goto R. Granier de Cassagnac N. Grau S. V. Greene M. Grosse Perdekamp Y. Gu T. Gunji H. Guragain T. Hachiya J. S. Haggerty K. I. Hahn H. Hamagaki H. F. Hamilton S. Y. Han J. Hanks S. Hasegawa T. O. S. Haseler K. Hashimoto R. Hayano X. He T. K. Hemmick T. Hester J. C. Hill K. Hill R. S. Hollis K. Homma B. Hong T. Hoshino N. Hotvedt J. Huang S. Huang T. Ichihara Y. Ikeda K. Imai Y. Imazu J. Imrek M. Inaba A. Iordanova D. Isenhower A. Isinhue Y. Ito D. Ivanishchev B. V. Jacak S. J. Jeon M. Jezghani Z. Ji J. Jia X. Jiang B. M. Johnson K. S. Joo V. Jorjadze D. Jouan D. S. Jumper J. Kamin S. Kanda B. H. Kang J. H. Kang J. S. Kang D. Kapukchyan J. Kapustinsky S. Karthas D. Kawall A. V. Kazantsev J. A. Key V. Khachatryan P. K. Khandai A. Khanzadeev K. M. Kijima C. Kim D. J. Kim E.-J. Kim M. Kim M. H. Kim Y.-J. Kim Y. K. Kim D. K Los Alamos National Laboratory Los Alamos New Mexico 87545 USA Department of Physics University of Michigan Ann Arbor Michigan 48109-1040 USA Chemistry Department Stony Brook University SUNY Stony Brook New York 11794-3400 USA RIKEN Nishina Center for Accelerator-Based Science Wako Saitama 351-0198 Japan RIKEN BNL Research Center Brookhaven National Laboratory Upton New York 11973-5000 USA Center for Nuclear Study Graduate School of Science University of Tokyo 7-3-1 Hongo Bunkyo Tokyo 113-0033 Japan Department of Physics and Astronomy Howard University Washington DC 20059 USA KEK High Energy Accelerator Research Organization Tsukuba Ibaraki 305-0801 Japan Iowa State University Ames Iowa 50011 USA Department of Physics and Astronomy Stony Brook University SUNY Stony Brook New York 11794-3800 USA Kyoto University Kyoto 606-8502 Japan Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA Physics Department Brookhaven National Laboratory Upton New York 11973-5000 USA IHEP Protvino State Research Center of Russian Federation Institute for High Energy Physics Protvino 142281 Russia ELTE Eötvös Loránd University H-1117 Budapest Pázmány P. s. 1/A Hungary Collider-Accelerator Department Brookhaven National Laboratory Upton New York 11973-5000 USA Science and Technology on Nuclear Data Laboratory China Institute of Atomic Energy Beijing 102413 People's Republic of China Department of Physics University of Massachusetts Amherst Massachusetts 01003-9337 USA University of California-Riverside Riverside California 92521 USA Baruch College City University of New York New York New York 10010 USA PNPI Petersburg Nuclear Physics Institute Gatchina Leningrad region 188300 Russia University of Colorado Boulder Colorado 80309 USA Vanderbilt University Nashville Tennessee 37235 USA Saint Petersburg State Polytechnic University St. Petersburg 195251 Russia National Research Center “Kurchatov Institute” Moscow 123098 Russia New Mexico State U

The fraction of J/ψ mesons which come from B-meson decay, FB→J/ψ, is measured for J/ψ rapidity 1.20 in p+p and Cu+Au collisions at sNN = 200 GeV with the PHENIX detector. The extracted fraction is FB→J/ψ=0.025&#... 详细信息

The fraction of J/ψ mesons which come from B-meson decay, FB→J/ψ, is measured for J/ψ rapidity 1.2<|y|<2.2 and pT>0 in p+p and Cu+Au collisions at sNN = 200 GeV with the PHENIX detector. The extracted fraction is FB→J/ψ=0.025±0.006 (stat) ± 0.010(syst) for p+p collisions. For Cu+Au collisions, FB→J/ψ is 0.094 ± 0.028(stat) ± 0.037(syst) in the Au-going direction (−2.2nuclear modification factor, RCuAu, of B mesons in Cu+Au collisions is consistent with binary scaling of measured yields in p+p at both forward and backward rapidity.

关键词： Leptonic, semileptonic & radiative decays Particle & resonance production Relativistic heavy-ion collisions Bottom mesons Mesons

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Measurements of B→J/ψ at forward rapidity in p+p collisions at s=510 GeV

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Physical Review D 2017年第9期95卷 092002-092002页

作者： C. Aidala N. N. Ajitanand Y. Akiba R. Akimoto J. Alexander M. Alfred K. Aoki N. Apadula H. Asano E. T. Atomssa A. Attila T. C. Awes C. Ayuso B. Azmoun V. Babintsev M. Bai X. Bai B. Bannier K. N. Barish S. Bathe V. Baublis C. Baumann S. Baumgart A. Bazilevsky M. Beaumier R. Belmont A. Berdnikov Y. Berdnikov D. Black D. S. Blau M. Boer J. S. Bok K. Boyle M. L. Brooks J. Bryslawskyj H. Buesching V. Bumazhnov C. Butler S. Butsyk S. Campbell C. CanoaRoman C.-H. Chen C. Y. Chi M. Chiu I. J. Choi J. B. Choi S. Choi P. Christiansen T. Chujo V. Cianciolo B. A. Cole M. Connors N. Cronin N. Crossette M. Csanád T. Csörgő T. W. Danley A. Datta M. S. Daugherity G. David K. DeBlasio K. Dehmelt A. Denisov A. Deshpande E. J. Desmond L. Ding J. H. Do L. D’Orazio O. Drapier A. Drees K. A. Drees M. Dumancic J. M. Durham A. Durum T. Elder T. Engelmore A. Enokizono S. Esumi K. O. Eyser B. Fadem W. Fan N. Feege D. E. Fields M. Finger M. Finger, Jr. F. Fleuret S. L. Fokin J. E. Frantz A. Franz A. D. Frawley Y. Fukao Y. Fukuda T. Fusayasu K. Gainey C. Gal P. Garg A. Garishvili I. Garishvili H. Ge F. Giordano A. Glenn X. Gong M. Gonin Y. Goto R. Granier de Cassagnac N. Grau S. V. Greene M. Grosse Perdekamp Y. Gu T. Gunji H. Guragain T. Hachiya J. S. Haggerty K. I. Hahn H. Hamagaki S. Y. Han J. Hanks S. Hasegawa T. O. S. Haseler K. Hashimoto R. Hayano X. He T. K. Hemmick T. Hester J. C. Hill K. Hill R. S. Hollis K. Homma B. Hong T. Hoshino N. Hotvedt J. Huang S. Huang T. Ichihara Y. Ikeda K. Imai Y. Imazu M. Inaba A. Iordanova D. Isenhower A. Isinhue Y. Ito D. Ivanishchev B. V. Jacak S. J. Jeon M. Jezghani Z. Ji J. Jia X. Jiang B. M. Johnson K. S. Joo V. Jorjadze D. Jouan D. S. Jumper J. Kamin S. Kanda B. H. Kang J. H. Kang J. S. Kang D. Kapukchyan J. Kapustinsky S. Karthas D. Kawall A. V. Kazantsev J. A. Key V. Khachatryan P. K. Khandai A. Khanzadeev K. M. Kijima C. Kim D. J. Kim E.-J. Kim M. Kim M. H. Kim Y.-J. Kim Y. K. Kim D. Kincses E. Kistenev J. Klatsky D. Kleinjan P. Kline T. Koblesky M. Kofarago B. Komkov J. Koster D. Kotchetkov D Los Alamos National Laboratory Los Alamos New Mexico 87545 USA Department of Physics University of Michigan Ann Arbor Michigan 48109-1040 USA Chemistry Department Stony Brook University SUNY Stony Brook New York 11794-3400 USA RIKEN Nishina Center for Accelerator-Based Science Wako Saitama 351-0198 Japan RIKEN BNL Research Center Brookhaven National Laboratory Upton New York 11973-5000 USA Center for Nuclear Study Graduate School of Science University of Tokyo 7-3-1 Hongo Bunkyo Tokyo 113-0033 Japan Department of Physics and Astronomy Howard University Washington D.C. 20059 USA KEK High Energy Accelerator Research Organization Tsukuba Ibaraki 305-0801 Japan Iowa State University Ames Iowa 50011 USA Department of Physics and Astronomy Stony Brook University SUNY Stony Brook New York 11794-3800 USA Kyoto University Kyoto 606-8502 Japan ELTE Eötvös Loránd University H-1117 Budapest Pázmány P. s. 1/A Hungary Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA Physics Department Brookhaven National Laboratory Upton New York 11973-5000 USA IHEP Protvino State Research Center of Russian Federation Institute for High Energy Physics Protvino 142281 Russia Collider-Accelerator Department Brookhaven National Laboratory Upton New York 11973-5000 USA Science and Technology on Nuclear Data Laboratory China Institute of Atomic Energy Beijing 102413 People’s Republic of China University of California-Riverside Riverside California 92521 USA Baruch College City University of New York New York New York 10010 USA PNPI Petersburg Nuclear Physics Institute Gatchina Leningrad region 188300 Russia University of Colorado Boulder Colorado 80309 USA Vanderbilt University Nashville Tennessee 37235 USA Saint Petersburg State Polytechnic University St. Petersburg 195251 Russia National Research Center “Kurchatov Institute ” Moscow 123098 Russia New Mexico State University Las Cruces New Mexico 88003 USA Georgia State University Atlanta Georgia 30

We report the first measurement of the fraction of J/ψ mesons coming from B-meson decay (FB→J/ψ) in p+p collisions at s=510 GeV. The measurement is performed using the forward silicon vertex detector and central vertex detector at PHENIX, which provide precise tracking and distance-of-closest-approach determinations, enabling the statistical separation of J/ψ due to B-meson decays from prompt J/ψ. The measured value of FB→J/ψ is 8.1%±2.3%(stat)±1.9%(syst) for J/ψ with transverse momenta 0

关键词： Heavy-particle decays Bottom mesons Charmed mesons Hadron colliders

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Nonperturbative-transverse-momentum effects and evolution in dihadron and direct photon-hadron angular correlations in p+p collisions at s=510 GeV

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Physical Review D 2017年第7期95卷 072002-072002页

作者： A. Adare C. Aidala N. N. Ajitanand Y. Akiba R. Akimoto J. Alexander M. Alfred V. Andrieux K. Aoki N. Apadula Y. Aramaki H. Asano E. T. Atomssa T. C. Awes C. Ayuso B. Azmoun V. Babintsev M. Bai X. Bai N. S. Bandara B. Bannier K. N. Barish S. Bathe V. Baublis C. Baumann S. Baumgart A. Bazilevsky M. Beaumier S. Beckman R. Belmont A. Berdnikov Y. Berdnikov D. Black D. S. Blau M. Boer J. S. Bok K. Boyle M. L. Brooks J. Bryslawskyj H. Buesching V. Bumazhnov C. Butler S. Butsyk S. Campbell V. Canoa Roman R. Cervantes C.-H. Chen C. Y. Chi M. Chiu I. J. Choi J. B. Choi S. Choi P. Christiansen T. Chujo V. Cianciolo Z. Citron B. A. Cole M. Connors N. Cronin N. Crossette M. Csanád T. Csörgő T. W. Danley A. Datta M. S. Daugherity G. David K. DeBlasio K. Dehmelt A. Denisov A. Deshpande E. J. Desmond L. Ding A. Dion D. Dixit J. H. Do L. D’Orazio O. Drapier A. Drees K. A. Drees M. Dumancic J. M. Durham A. Durum T. Elder T. Engelmore A. Enokizono H. En’yo S. Esumi K. O. Eyser B. Fadem W. Fan N. Feege D. E. Fields M. Finger M. Finger, Jr. F. Fleuret S. L. Fokin J. E. Frantz A. Franz A. D. Frawley Y. Fukao Y. Fukuda T. Fusayasu K. Gainey C. Gal P. Gallus P. Garg A. Garishvili I. Garishvili H. Ge F. Giordano A. Glenn X. Gong M. Gonin Y. Goto R. Granier de Cassagnac N. Grau S. V. Greene M. Grosse Perdekamp Y. Gu T. Gunji H. Guragain T. Hachiya J. S. Haggerty K. I. Hahn H. Hamagaki H. F. Hamilton S. Y. Han J. Hanks S. Hasegawa T. O. S. Haseler K. Hashimoto R. Hayano X. He T. K. Hemmick T. Hester J. C. Hill K. Hill R. S. Hollis K. Homma B. Hong T. Hoshino N. Hotvedt J. Huang S. Huang T. Ichihara Y. Ikeda K. Imai Y. Imazu J. Imrek M. Inaba A. Iordanova D. Isenhower A. Isinhue Y. Ito D. Ivanishchev B. V. Jacak S. J. Jeon M. Jezghani Z. Ji J. Jia X. Jiang B. M. Johnson E. Joo K. S. Joo V. Jorjadze D. Jouan D. S. Jumper J. Kamin S. Kanda B. H. Kang J. H. Kang J. S. Kang D. Kapukchyan J. Kapustinsky S. Karthas D. Kawall A. V. Kazantsev J. A. Key V. Khachatryan P. K. Khandai A. Khanzadeev K. Kihara K. M. Kijima C. Kim D. H. Kim D. J. Kim E.- University of Colorado Boulder Colorado 80309 USA Los Alamos National Laboratory Los Alamos New Mexico 87545 USA Department of Physics University of Michigan Ann Arbor Michigan 48109-1040 USA Chemistry Department Stony Brook University SUNY Stony Brook New York 11794-3400 USA RIKEN Nishina Center for Accelerator-Based Science Wako Saitama 351-0198 Japan RIKEN BNL Research Center Brookhaven National Laboratory Upton New York 11973-5000 USA Center for Nuclear Study Graduate School of Science University of Tokyo 7-3-1 Hongo Bunkyo Tokyo 113-0033 Japan Department of Physics and Astronomy Howard University Washington DC 20059 USA KEK High Energy Accelerator Research Organization Tsukuba Ibaraki 305-0801 Japan Iowa State University Ames Iowa 50011 USA Department of Physics and Astronomy Stony Brook University SUNY Stony Brook New York 11794-3800 USA Kyoto University Kyoto 606-8502 Japan Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA Physics Department Brookhaven National Laboratory Upton New York 11973-5000 USA IHEP Protvino State Research Center of Russian Federation Institute for High Energy Physics Protvino 142281 Russia Collider-Accelerator Department Brookhaven National Laboratory Upton New York 11973-5000 USA Science and Technology on Nuclear Data Laboratory China Institute of Atomic Energy Beijing 102413 People’s Republic of China Department of Physics University of Massachusetts Amherst Massachusetts 01003-9337 USA University of California-Riverside Riverside California 92521 USA Baruch College City University of New York New York New York 10010 USA PNPI Petersburg Nuclear Physics Institute Gatchina Leningrad region 188300 Russia Vanderbilt University Nashville Tennessee 37235 USA Saint Petersburg State Polytechnic University St. Petersburg 195251 Russia National Research Center “Kurchatov Institute” Moscow 123098 Russia New Mexico State University Las Cruces New Mexico 88003 USA Georgia State University Atlanta

Dihadron and isolated direct photon-hadron angular correlations are measured in p+p collisions at s=510 GeV. Correlations of charged hadrons of 0.7<pT<10 GeV/c with π0 mesons of 4<pT<15 GeV/c or isolat... 详细信息

Dihadron and isolated direct photon-hadron angular correlations are measured in p+p collisions at s=510 GeV. Correlations of charged hadrons of 0.7

关键词： Hadron-hadron interactions Particle correlations & fluctuations Relativistic heavy-ion collisions Photons

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The CUORE and CUORE-0 experiments at LNGS

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Journal of physics: Conference Series 2018年第1期1056卷

作者： C Alduino K Alfonso F T Avignone III O Azzolini G Bari F Bellini G Benato A Bersani M Biassoni A Branca C Brofferio C Bucci A Camacho A Caminata L Canonica X G Cao S Capelli L Cappelli L Cardani P Carniti N Casali L Cassina D Chiesa N Chott M Clemenza S Copello C Cosmelli O Cremonesi R J Creswick J S Cushman A D'Addabbo D D'Aguanno I Dafinei C J Davis S Dell'Oro M M Deninno S Di Domizio M L Di Vacri V Dompè A Drobizhev D Q Fang M Faverzani E Ferri F Ferroni E Fiorini M A Franceschi S J Freedman B K Fujikawa A Giachero L Gironi A Giuliani L Gladstone P Gorla C Gotti T D Gutierrez K Han K M Heeger R Hennings-Yeomans H Z Huang G Keppel Yu G Kolomensky A Leder C Ligi K E Lim Y G Ma L Marini M Martinez R H Maruyama Y Mei N Moggi S Morganti S S Nagorny T Napolitano M Nastasi C Nones E B Norman V Novati A Nucciotti I Nutini T O'Donnell J L Ouellet C E Pagliarone M Pallavicini V Palmieri L Pattavina M Pavan G Pessina C Pira S Pirro S Pozzi E Previtali F Reindl C Rosenfeld C Rusconi M Sakai S Sangiorgio D Santone B Schmidt J Schmidt N D Scielzo V Singh M Sisti L Taffarello F Terranova C Tomei M Vignati S L Wagaarachchi B S Wang H W Wang B Welliver J Wilson K Wilson L A Winslow T Wise L Zanotti G Q Zhang S Zimmermann S Zucchelli Dept of Physics and Astronomy Univ of South Carolina Columbia SC 29208 USA Dept of Physics and Astronomy Univ of California Los Angeles CA 90095 USA INFN – Laboratori Nazionali di Legnaro Legnaro (Padova) I-35020 Italy INFN – Sezione di Bologna Bologna I-40127 Italy Dipartimento di Fisica Sapienza Università di Roma Roma I-00185 Italy INFN – Sezione di Roma Roma I-00185 Italy Department of Physics University of California Berkeley CA 94720 USA INFN – Sezione di Genova Genova I-16146 Italy INFN – Sezione di Milano Bicocca Milano I-20126 Italy INFN – Sezione di Padova Padova I-35131 Italy Dipartimento di Fisica e Astronomia Università di Padova I-35131 Padova Italy Dipartimento di Fisica Università di Milano-Bicocca Milano I-20126 Italy INFN – Laboratori Nazionali del Gran Sasso Assergi (L'Aquila) I-67100 Italy Massachusetts Institute of Technology Cambridge MA 02139 USA Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai 201800 China Nuclear Science Division Lawrence Berkeley Nat Lab Berkeley CA 94720 USA Dipartimento di Fisica Università di Genova Genova I-16146 Italy Wright Laboratory Department of Physics Yale University New Haven CT 06520 USA Dipartimento di Ingegneria Civile e Meccanica Università degli Studi di Cassino e del Lazio Meridionale Cassino I-03043 Italy Center for Neutrino Physics Virginia Polytechnic Institute and State University Blacksburg Virginia 24061 USA INFN – Gran Sasso Science Institute L'Aquila I-67100 Italy Dip di Scienze Fisiche e Chimiche Università dell'Aquila L'Aquila I-67100 Italy INFN – Laboratori Nazionali di Frascati Frascati (Roma) I-00044 Italy Deceased CSNSM Univ. Paris-Sud CNRS/IN2P3 Univ. Paris-Saclay 91405 Orsay France Physics Dept California Polytechnic State Univ San Luis Obispo CA 93407 USA INPAC and School of Physics and Astronomy Shanghai Jiao Tong University Lab de Fisica Nuclear y Astroparticulas Univ de Zaragoza Zaragoza 50009 Spain Dipartimento di Fisica e Astro

The Cryogenic Underground Observatory for Rare Events (CUORE) is the first bolometric experiment searching for neutrinoless double beta decay that has been able to reach the 1-ton scale. The detector consists of an array of 988 TeO2 crystals arranged in a cylindrical compact structure of 19 towers. The construction of the experiment and, in particular, the installation of all towers in the cryostat was completed in August 2016 and commissioning started in fall 2016. The experiment has completed the pre-operation phase and is currently in data taking. We present here the achievements of CUORE during the commissioning phase and the limit on the 130Te half-life for the neutrinoless double beta decay that has been released after the first 3 weeks of collected data. physics results from CUORE-0 will also be updated.

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Measurements of e+e− pairs from open heavy flavor in p+p and d+A collisions at sNN=200 GeV

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Physical Review C 2017年第2期96卷 024907-024907页

作者： A. Adare S. Afanasiev C. Aidala N. N. Ajitanand Y. Akiba H. Al-Bataineh J. Alexander M. Alfred K. Aoki N. Apadula L. Aphecetche J. Asai E. T. Atomssa R. Averbeck T. C. Awes C. Ayuso B. Azmoun V. Babintsev A. Bagoly M. Bai G. Baksay L. Baksay A. Baldisseri K. N. Barish P. D. Barnes B. Bassalleck A. T. Basye S. Bathe S. Batsouli V. Baublis C. Baumann A. Bazilevsky S. Belikov R. Belmont R. Bennett A. Berdnikov Y. Berdnikov A. A. Bickley D. S. Blau M. Boer J. G. Boissevain J. S. Bok H. Borel K. Boyle M. L. Brooks J. Bryslawskyj H. Buesching V. Bumazhnov G. Bunce C. Butler S. Butsyk C. M. Camacho S. Campbell V. Canoa Roman B. S. Chang W. C. Chang J.-L. Charvet S. Chernichenko C. Y. Chi M. Chiu I. J. Choi R. K. Choudhury T. Chujo P. Chung A. Churyn V. Cianciolo Z. Citron B. A. Cole M. Connors P. Constantin M. Csanád T. Csörgő T. Dahms S. Dairaku T. W. Danley K. Das G. David K. DeBlasio K. Dehmelt A. Denisov D. d'Enterria A. Deshpande E. J. Desmond O. Dietzsch A. Dion J. H. Do M. Donadelli O. Drapier A. Drees K. A. Drees A. K. Dubey M. Dumancic J. M. Durham A. Durum D. Dutta V. Dzhordzhadze Y. V. Efremenko T. Elder F. Ellinghaus T. Engelmore A. Enokizono H. En'yo S. Esumi K. O. Eyser B. Fadem W. Fan N. Feege D. E. Fields M. Finger M. Finger, Jr. F. Fleuret S. L. Fokin Z. Fraenkel J. E. Frantz A. Franz A. D. Frawley K. Fujiwara Y. Fukao Y. Fukuda T. Fusayasu C. Gal I. Garishvili H. Ge A. Glenn H. Gong M. Gonin J. Gosset Y. Goto R. Granier de Cassagnac N. Grau S. V. Greene M. Grosse Perdekamp T. Gunji H.-Å. Gustafsson T. Hachiya A. Hadj Henni J. S. Haggerty K. I. Hahn H. Hamagaki R. Han S. Y. Han E. P. Hartouni K. Haruna S. Hasegawa T. O. S. Haseler E. Haslum R. Hayano X. He M. Heffner T. K. Hemmick T. Hester J. C. Hill K. Hill M. Hohlmann W. Holzmann K. Homma B. Hong T. Horaguchi D. Hornback T. Hoshino N. Hotvedt J. Huang S. Huang T. Ichihara R. Ichimiya H. Iinuma Y. Ikeda K. Imai J. Imrek M. Inaba D. Isenhower M. Ishihara T. Isobe M. Issah A. Isupov Y. Ito D. Ivanishchev B. V. Jacak Z. Ji J. Jia J. Jin B. M. Johnson K. University of Colorado Boulder Colorado 80309 USA Joint Institute for Nuclear Research 141980 Dubna Moscow Region Russia Department of Physics University of Massachusetts Amherst Massachusetts 01003-9337 USA Department of Physics University of Michigan Ann Arbor Michigan 48109-1040 USA Chemistry Department Stony Brook University SUNY Stony Brook New York 11794-3400 USA RIKEN Nishina Center for Accelerator-Based Science Wako Saitama 351-0198 Japan RIKEN BNL Research Center Brookhaven National Laboratory Upton New York 11973-5000 USA New Mexico State University Las Cruces New Mexico 88003 USA Department of Physics and Astronomy Howard University Washington DC 20059 USA KEK High Energy Accelerator Research Organization Tsukuba Ibaraki 305-0801 Japan Kyoto University Kyoto 606-8502 Japan Iowa State University Ames Iowa 50011 USA Department of Physics and Astronomy Stony Brook University SUNY Stony Brook New York 11794-3800 USA SUBATECH (Ecole des Mines de Nantes CNRS-IN2P3 Université de Nantes) BP 20722-44307 Nantes France Laboratoire Leprince-Ringuet Ecole Polytechnique CNRS-IN2P3 Route de Saclay F-91128 Palaiseau France Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA Physics Department Brookhaven National Laboratory Upton New York 11973-5000 USA IHEP Protvino State Research Center of Russian Federation Institute for High Energy Physics Protvino 142281 Russia ELTE Eötvös Loránd University H-1117 Budapest Pázmány P. s. 1/A Hungary Collider-Accelerator Department Brookhaven National Laboratory Upton New York 11973-5000 USA Florida Institute of Technology Melbourne Florida 32901 USA Dapnia CEA Saclay F-91191 Gif-sur-Yvette France University of California Riverside Riverside California 92521 USA Los Alamos National Laboratory Los Alamos New Mexico 87545 USA University of New Mexico Albuquerque New Mexico 87131 USA Abilene Christian University Abilene Texas 79699 USA Baruch College City University of New York New

We report a measurement of e+e− pairs from semileptonic heavy-flavor decays in p+p collisions at sNN=200 GeV. The e+e− pair yield from bb¯ and cc¯ is separated by exploiting a double differential fit done simultaneously in dielectron invariant mass and pT. We used three different event generators, pythia, mc@nlo, and powheg, to simulate the e+e− spectra from cc¯ and bb¯ production. The data can be well described by all three generators within the detector acceptance. However, when using the generators to extrapolate to 4π, significant differences are observed for the total cross section. These difference are less pronounced for bb¯ than for cc¯. The same model dependence was observed in already published d+A data. The p+p data are also directly compared with d+A data in mass and pT, and within the statistical accuracy no nuclear modification is seen.

关键词： Jets & heavy flavor physics Leptonic, semileptonic & radiative decays Particle & resonance production Relativistic heavy-ion collisions Bottom mesons Charmed mesons

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