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Search for CP violation in Ds+ → KS0π+, D+ → KS0K+ and D+ → φπ+ decays

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arXiv 2019年

作者： Aaij, R. Beteta, C. Abellán Adeva, B. Adinolfi, M. Aidala, C.A. Ajaltouni, Z. Akar, S. Albicocco, P. Albrecht, J. Alessio, F. Alexander, M. Albero, A. Alfonso Alkhazov, G. Cartelle, P. Alvarez Alves, A.A. Amato, S. Amhis, Y. An, L. Anderlini, L. Andreassi, G. Andreotti, M. Andrews, J.E. Archilli, F. d’Argent, P. Romeu, J. Arnau Artamonov, A. Artuso, M. Arzymatov, K. Aslanides, E. Atzeni, M. Audurier, B. Bachmann, S. Back, J.J. Baker, S. Balagura, V. Baldini, W. Baranov, A. Barlow, R.J. Barrand, G.C. Barsuk, S. Barter, W. Bartolini, M. Baryshnikov, F. Batozskaya, V. Batsukh, B. Battig, A. Battista, V. Bay, A. Bedeschi, F. Bediaga, I. Beiter, A. Bel, L.J. Belin, S. Beliy, N. Bellee, V. Belloli, N. Belous, K. Belyaev, I. Ben-Haim, E. Bencivenni, G. Benson, S. Beranek, S. Berezhnoy, A. Bernet, R. Berninghoff, D. Bertholet, E. Bertolin, A. Betancourt, C. Betti, F. Bettler, M.O. van Beuzekom, M. Bezshyiko, Ia. Bhasin, S. Bhom, J. Bieker, M.S. Bifani, S. Billoir, P. Birnkraut, A. Bizzeti, A. Bjørn, M. Blago, M.P. Blake, T. Blanc, F. Blusk, S. Bobulska, D. Bocci, V. Garcia, O. Boente Boettcher, T. Bondar, A. Bondar, N. Borghi, S. Borisyak, M. Borsato, M. Boubdir, M. Bowcock, T.J.V. Bozzi, C. Braun, S. Brodski, M. Brodzicka, J. Gonzalo, A. Brossa Brundu, D. Buchanan, E. Buonaura, A. Burr, C. Bursche, A. Buytaert, J. Byczynski, W. Cadeddu, S. Cai, H. Calabrese, R. Calladine, R. Calvi, M. Gomez, M. Calvo Camboni, A. Campana, P. Perez, D.H. Campora Capriotti, L. Carbone, A. Carboni, G. Cardinale, R. Cardini, A. Carniti, P. Akiba, K. Carvalho Casse, G. Cattaneo, M. Cavallero, G. Cenci, R. Chamont, D. Chapman, M.G. Charles, M. Charpentier, Ph. Chatzikonstantinidis, G. Chefdeville, M. Chekalina, V. Chen, C. Chen, S. Chitic, S.-G. Chobanova, V. Chrzaszcz, M. Chubykin, A. Ciambrone, P. Vidal, X. Cid Ciezarek, G. Cindolo, F. Clarke, P.E.L. Clemencic, M. Cliff, H.V. Closier, J. Coco, V. Coelho, J.A.B. Cogan, J. Cogneras, E. Cojocariu, L. Collins, P. Rio de Janeiro Brazil Rio de Janeiro Brazil Center for High Energy Physics Tsinghua University Beijing China Beijing China Univ. Grenoble Alpes Univ. Savoie Mont Blanc CNRS IN2P3-LAPP Annecy France Université Clermont Auvergne CNRS/IN2P3 LPC Clermont-Ferrand France Aix Marseille Univ CNRS/IN2P3 CPPM Marseille France LAL Univ. Paris-Sud CNRS/IN2P3 Université Paris-Saclay Orsay France LPNHE Sorbonne Université Paris Diderot Sorbonne Paris Cité CNRS/IN2P3 Paris France I. Physikalisches Institut RWTH Aachen University Aachen Germany Fakultät Physik Technische Universität Dortmund Dortmund Germany Heidelberg Germany Physikalisches Institut Ruprecht-Karls-Universität Heidelberg Heidelberg Germany School of Physics University College Dublin Dublin Ireland INFN Sezione di Bari Bari Italy INFN Sezione di Bologna Bologna Italy INFN Sezione di Ferrara Ferrara Italy INFN Sezione di Firenze Firenze Italy INFN Laboratori Nazionali di Frascati Frascati Italy INFN Sezione di Genova Genova Italy INFN Sezione di Milano-Bicocca Milano Italy INFN Sezione di Milano Milano Italy INFN Sezione di Cagliari Monserrato Italy INFN Sezione di Padova Padova Italy INFN Sezione di Pisa Pisa Italy INFN Sezione di Roma Tor Vergata Roma Italy INFN Sezione di Roma La Sapienza Roma Italy Nikhef National Institute for Subatomic Physics Amsterdam Netherlands Nikhef National Institute for Subatomic Physics VU University Amsterdam Amsterdam Netherlands Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences Kraków Poland AGH - University of Science and Technology Faculty of Physics and Applied Computer Science Kraków Poland Warsaw Poland Horia Hulubei National Institute of Physics and Nuclear Engineering Bucharest-Magurele Romania Moscow Russia Moscow Russia Moscow Russia Yandex School of Data Analysis Moscow Russia National Research University Higher School of Economics Moscow Russia Novosibirsk Russia Protvino Russia Kon

A search for charge-parity (CP) violation in Cabibbo-suppressed Ds+ → KS0π+, D+ → KS0K+ and D+ → φπ+ decays is reported using proton-proton collision data, corresponding to an integrated luminosity of 3.8 fb−1, collected at a center-of-mass energy of 13 TeV with the LHCb detector. High-yield samples of kinematically and topologically similar Cabibbo-favored D(+s) decays are analyzed to subtract nuisance asymmetries due to production and detection effects, including those induced by CP violation in the neutral kaon system. The results are (formula presented), where the first uncertainties are statistical and the second systematic. They are the most precise measurements of these quantities to date, and are consistent with CP symmetry. A combination with previous LHCb measurements, based on data collected at 7 and 8 TeV, is also reported. Copyright © 2019, The Authors. All rights reserved.

关键词： Supersymmetry

The Cauchy problem for two dimensional generalized Kadomtsev-Petviashvili-I equation in anisotropic Sobolev spaces

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arXiv 2017年

作者： Yan, Wei Li, Yongsheng Huang, Jianhua Duan, Jinqiao School of Mathematics and Information Science Henan Engineering Laboratory for Big Data Statistical Analysis and Optimal Control Henan Normal University Xinxiang Henan453007 China School of Mathematics South China University of Technology Guangzhou Guangdong510640 China College of Science National University of Defense Technology Changsha Hunan410073 China Department of Applied Mathematics Illinois Institute of Technology ChicagoIL60616 United States

The goal of this paper is three-fold. Firstly, we prove that the Cauchy problem for generalized KP-I equation ut+ |Dx|αθxu + θ-1xθ2yu + 1/2 θx(u2) = 0, α ≥ 4 is locally well-posed in the anisotropic Sobolev spaces Hs1,s2(R2) with s1> -α-1/4 and s2≥ 0. Secondly, we prove that the problem is globally well-posed in Hs1,0(R2) with s1> -(α-1)(3α-4)/4(5α+3) if 4 ≤ α ≤ 5. Finally, we prove that the problem is globally well-posed in Hs1,0(R2) with s1> -α(3α-4)/4(5α+4) if α > 5. Our result improves the result of Saut and Tzvetkov (J. Math. Pures Appl. 79(2000), 307-338.) and Li and Xiao (J. Math. Pures Appl. 90(2008), 338-352.). Copyright © 2017, The Authors. All rights reserved.

关键词： Sobolev spaces

Multi-configuration Dirac-Hartree-Fock calculations of forbidden transitions within the 3dk ground configurations of highly charged ions (Z = 72 − 83)

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arXiv 2017年

作者： Zhao, Z.L. Wang, K. Li, S. Si, R. Chen, C.Y. Chen, Z.B. Yan, J. Ralchenko, Yu. Hebei Key Lab of Optic-electronic Information and Materials College of Physics Science and Technology Hebei University Baoding071002 China Institute of Applied Physics and Computational Mathematics Beijing100088 China Shanghai EBIT Lab Institute of Modern Physics Department of Nuclear Science and Technology Fudan University Shanghai200433 China College of Science National University of Defense Technology Changsha410073 China National Institute of Standards and Technology GaithersburgMD20899-8422 United States

Extensive self-consistent multi-configuration Dirac-Hartree-Fock (MCDHF) calculations are performed for the 3s23p63dk (k = 1 − 9) ground configurations of highly charged ions (Z = 72 − 83). Complete and consistent data sets of excitation energies, wavelengths, line strengths, oscillator strengths, and magnetic dipole (M1) and electric quadrupole (E2) transition rates among all these levels are given. We have compared our results with the results available in the literature and the accuracy of the data is assessed. We predict new energy levels and transition probabilities where no other experimental or theoretical results are available, which will form the basis for future experimental work. Copyright © 2017, The Authors. All rights reserved.

关键词： Electric lines

Publisher Correction: A meta-analysis of genome-wide association studies identifies multiple longevity genes

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Nature communications 2021年第1期12卷 2463页

作者： Joris Deelen Daniel S Evans Dan E Arking Niccolò Tesi Marianne Nygaard Xiaomin Liu Mary K Wojczynski Mary L Biggs Ashley van der Spek Gil Atzmon Erin B Ware Chloé Sarnowski Albert V Smith Ilkka Seppälä Heather J Cordell Janina Dose Najaf Amin Alice M Arnold Kristin L Ayers Nir Barzilai Elizabeth J Becker Marian Beekman Hélène Blanché Kaare Christensen Lene Christiansen Joanna C Collerton Sarah Cubaynes Steven R Cummings Karen Davies Birgit Debrabant Jean-François Deleuze Rachel Duncan Jessica D Faul Claudio Franceschi Pilar Galan Vilmundur Gudnason Tamara B Harris Martijn Huisman Mikko A Hurme Carol Jagger Iris Jansen Marja Jylhä Mika Kähönen David Karasik Sharon L R Kardia Andrew Kingston Thomas B L Kirkwood Lenore J Launer Terho Lehtimäki Wolfgang Lieb Leo-Pekka Lyytikäinen Carmen Martin-Ruiz Junxia Min Almut Nebel Anne B Newman Chao Nie Ellen A Nohr Eric S Orwoll Thomas T Perls Michael A Province Bruce M Psaty Olli T Raitakari Marcel J T Reinders Jean-Marie Robine Jerome I Rotter Paola Sebastiani Jennifer Smith Thorkild I A Sørensen Kent D Taylor André G Uitterlinden Wiesje van der Flier Sven J van der Lee Cornelia M van Duijn Diana van Heemst James W Vaupel David Weir Kenny Ye Yi Zeng Wanlin Zheng Henne Holstege Douglas P Kiel Kathryn L Lunetta P Eline Slagboom Joanne M Murabito Max Planck Institute for Biology of Ageing Cologne Germany. Joris.Deelen@age.mpg.de. Molecular Epidemiology Department of Biomedical Data Sciences Leiden University Medical Center Leiden The Netherlands. Joris.Deelen@age.mpg.de. California Pacific Medical Center Research Institute San Francisco CA USA. DEvans@***. McKusick-Nathans Institute of Genetic Medicine Department of Genetic Medicine Johns Hopkins University School of Medicine Baltimore MD USA. Alzheimer Center Amsterdam Department of Neurology Amsterdam Neuroscience Vrije Universiteit Amsterdam Amsterdam UMC Amsterdam The Netherlands. Department of Clinical Genetics Amsterdam UMC Amsterdam The Netherlands. Delft Bioinformatics Lab Delft University of Technology Delft The Netherlands. The Danish Aging Research Center Department of Public Health University of Southern Denmark Odense C Denmark. BGI-Shenzhen Shenzhen China. China National Genebank BGI-Shenzhen Shenzhen China. Division of Statistical Genomics Department of Genetics Washington University School of Medicine Saint Louis MO USA. Department of Biostatistics University of Washington Seattle WA USA. Cardiovascular Health Research Unit Department of Medicine University of Washington Seattle WA USA. Department of Epidemiology Erasmus MC Rotterdam The Netherlands. Department of Biology Faculty of Natural Science University of Haifa Haifa Israel. Departments of Medicine and Genetics Albert Einstein College of Medicine Bronx NY USA. Institute for Social Research Survey Research Center University of Michigan Ann Arbor MI USA. Department of Biostatistics Boston University School of Public Health Boston MA USA. School of Public Health Department of Biostatistics University of Michigan Ann Arbor MI USA. Icelandic Heart Association Kópavogur Iceland. Department of Clinical Chemistry Fimlab Laboratories and Finnish Cardiovascular Research Center-Tampere Faculty of Medicine and Health Technology Tampere University Tampere Finland. I

CEPC Conceptual Design Report Volume II - physics & Detector

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arXiv 2018年

作者： Abbrescia, Marcello Ahmad, Muhammad Ai, Xiaocong Albergo, Sebastiano Aleem, Muhammad Abid Alexeev, Maxim Aliev, Malik Altmannshofer, Wolfgang Alves, Fábio An, Fenfen An, Guangpeng An, Haipeng An, Qi An, Rui Andreazza, Attilio Anduze, Marc Antonello, Massimiliano Antonio, Juan Antusch, Stefan Arhrib, Abdesslam Arkani-Hamed, Nima Arndt, Kirk Azzi, Patrizia Azzurri, Paolo Palmer, Robert B. Bai, Bowen Bai, Sha Bai, Yang Bai, Yu Balagura, Vladislav Balossino, Ilaria Ban, Yong Barger, Vernon Barklow, Timothy Barreiro, João Bartalini, Paolo Becattini, Francesco Bedeschi, Franco Bellagamba, Lorenzo Belloni, Alberto Bencivenni, Giovanni Berg, J. Scott Bernius, Catrin Bertani, Monica Bertella, Claudia Bertucci, Michele Bi, XiaoJun Bi, Yuanjie Bian, Ligong Bian, Tianjian Bianchi, Fabrizio Bigi, Ikaros I. Biglietti, Michela Bignami, Andrea Bilei, Gianmario Boonekamp, Maarten Borgonovi, Lisa Bortoletto, Daniela Bortone, Alberto Boscherini, Davide Bosotti, Angelo Boudry, Vincent Braibant, Sylvie Bramante, Joseph Branchini, Paolo Brient, Jean-Claude Caccia, Massimo Cai, Chengfeng Cai, Hao Cai, Wenyong Cai, Xiao Cai, Yiming Cai, Yuchen Cai, Yunhai Cai, Zhiqiang Bret, Marc Cano Cao, Bo Cao, Dewen Cao, Jianshe Cao, Junjie Cao, Qing-Hong Michel, Carlo Casanova, Raimon Cavasinni, Vincenzo Chai, Junying Chai, Weiping Chang, NingBo Chang, Qin Chang, Spencer Chang, We-Fu Chang, Xuejun Chang, Yuan-Hann Chekanov, Sergei Chen, Bin Chen, Chunhui Chen, Fusan Chen, Gang Chen, Gang Chen, Gang Chen, Guoming Chen, Huan Chen, Huirun Chen, Lei Chen, Liejian Chen, Mingjun Chen, Mingshui Chen, Nian Chen, Ning Chen, Shanhong Chen, Shanzhen Chen, Shao-Long Chen, Shaomin Chen, Shenjian Chen, Shi Chen, Wei AnHui University HefeiAnhui China Beihang University Beijing China Beijing Beijing Normal University Beijing China Beijing University of Technology Beijing China Central China Normal University WuhanHubei China Chang’an University Xi’an Shaanxi China Changzhou Institute of Technology ChangzhouJiangsu China China Academy of Space Technology Beijing China China Institute of Atomic Energy Beijing China School of Mathematics and Physics China University of Geosciences WuhanHubei China China University of Mining and Technology Beijing China China West Normal University Nanchong Sichuan China Department of Physics Chongqing University Chongqing China Department of Physics Dalian University of Technology DalianLiaoning China East China University of Science and Technology Shanghai China Department of Physics Fudan University Shanghai China Guangxi University Nanning Guangxi China Department of Physics Hangzhou Normal University HangzhouZhejiang China Harbin Institute of Technology Haerbin Heilongjiang China Department of Physics Hebei University BaodingHebei Henan Normal University XinxiangHenan China Huazhong University of Science and Technology WuhanHubei China School of Physics and Electronics Hunan University ChangshaHunan China Institute of Electronics Chinese Academy Of Sciences Beijing China Institute of High Energy Physics Chinese Academy of Sciences Beijing China Institute of Modern Physics Chinese Academy Of Sciences LanzhouGansu China Shanghai Institute of Applied Physics Chinese Academy Of Sciences Shanghai China Inner Mongolia University Hohhot Neimenggu China Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing China CAS Key Laboratory of Theoretical Physics Institute of Theoretical Physics Chinese Academy of Sciences Beijing China Department of Physics Jiangsu Normal University XuzhouJiangsu China Department of Physics Jinan University GuangzhouGuangdong Lanzhou University Lanzho

Search for the doubly charmed baryon Ξcc+

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arXiv 2019年

作者： Aaij, R. Abellán Beteta, C. Ackernley, T. Adeva, B. Adinolfi, M. Afsharnia, H. Aidala, C.A. Aiola, S. Ajaltouni, Z. Akar, S. Albicocco, P. Albrecht, J. Alessio, F. Alexander, M. Alfonso Albero, A. Alkhazov, G. Alvarez Cartelle, P. Alves, A.A. Amato, S. Amhis, Y. An, L. Anderlini, L. Andreassi, G. Andreotti, M. Archilli, F. Arnau Romeu, J. Artamonov, A. Artuso, M. Arzymatov, K. Aslanides, E. Atzeni, M. Audurier, B. Bachmann, S. Back, J.J. Baker, S. Balagura, V. Baldini, W. Baranov, A. Barlow, R.J. Barsuk, S. Barter, W. Bartolini, M. Baryshnikov, F. Bassi, G. Batozskaya, V. Batsukh, B. Battig, A. Battista, V. Bay, A. Becker, M. Bedeschi, F. Bediaga, I. Beiter, A. Bel, L.J. Belavin, V. Belin, S. Beliy, N. Bellee, V. Belous, K. Belyaev, I. Bencivenni, G. Ben-Haim, E. Benson, S. Beranek, S. Berezhnoy, A. Bernet, R. Berninghoff, D. Bernstein, H.C. Bertholet, E. Bertolin, A. Betancourt, C. Betti, F. Bettler, M.O. Bezshyiko, Ia. Bhasin, S. Bhom, J. Bieker, M.S. Bifani, S. Billoir, P. Birnkraut, A. Bizzeti, A. Bjørn, M. Blago, M.P. Blake, T. Blanc, F. Blusk, S. Bobulska, D. Bocci, V. Boente Garcia, O. Boettcher, T. Boldyrev, A. Bondar, A. Bondar, N. Borghi, S. Borisyak, M. Borsato, M. Borsuk, J.T. Bowcock, T.J.V. Bozzi, C. Braun, S. Brea Rodriguez, A. Brodski, M. Brodzicka, J. Brossa Gonzalo, A. Brundu, D. Buchanan, E. Buonaura, A. Burr, C. Bursche, A. Butter, J.S. Buytaert, J. Byczynski, W. Cadeddu, S. Cai, H. Calabrese, R. Cali, S. Calladine, R. Calvi, M. Calvo Gomez, M. Camboni, A. Campana, P. Campora Perez, D.H. Capriotti, L. Carbone, A. Carboni, G. Cardinale, R. Cardini, A. Carniti, P. Carvalho Akiba, K. Casais Vidal, A. Casse, G. Cattaneo, M. Cavallero, G. Cenci, R. Cerasoli, J. Chapman, M.G. Charles, M. Charpentier, Ph. Chatzikonstantinidis, G. Chefdeville, M. Chekalina, V. Chen, C. Chen, S. Chernov, A. Chitic, S.-G. Chobanova, V. Chrzaszcz, M. Chubykin, A. Ciambrone, P. Cicala, M.F. Cid Vidal, X. Ciezarek, G. Cindolo, F. Clarke, P.E.L. Rio de Janeiro Brazil Rio de Janeiro Brazil Center for High Energy Physics Tsinghua University Beijing China School of Physics State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China University of Chinese Academy of Sciences Beijing China Beijing China Institute of Particle Physics Central China Normal University WuhanHubei China Univ. Grenoble Alpes Univ. Savoie Mont Blanc CNRS IN2P3-LAPP Annecy France Université Clermont Auvergne CNRS/IN2P3 LPC Clermont-Ferrand France Aix Marseille Univ CNRS/IN2P3 CPPM Marseille France LAL Univ. Paris-Sud CNRS/IN2P3 Université Paris-Saclay Orsay France LPNHE Sorbonne Université Paris Diderot Sorbonne Paris Cité CNRS/IN2P3 Paris France I. Physikalisches Institut RWTH Aachen University Aachen Germany Fakultät Physik Technische Universität Dortmund Dortmund Germany Heidelberg Germany Physikalisches Institut Ruprecht-Karls-Universität Heidelberg Heidelberg Germany School of Physics University College Dublin Dublin Ireland INFN Sezione di Bari Bari Italy INFN Sezione di Bologna Bologna Italy INFN Sezione di Ferrara Ferrara Italy INFN Sezione di Firenze Firenze Italy INFN Laboratori Nazionali di Frascati Frascati Italy INFN Sezione di Genova Genova Italy INFN Sezione di Milano-Bicocca Milano Italy INFN Sezione di Milano Milano Italy INFN Sezione di Cagliari Monserrato Italy INFN Sezione di Padova Padova Italy INFN Sezione di Pisa Pisa Italy INFN Sezione di Roma Tor Vergata Roma Italy INFN Sezione di Roma La Sapienza Roma Italy Nikhef National Institute for Subatomic Physics Amsterdam Netherlands Nikhef National Institute for Subatomic Physics VU University Amsterdam Amsterdam Netherlands Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences Kraków Poland AGH - University of Science and Technology Faculty of Physics and Applied Computer Science Kraków Poland Warsaw Poland Horia Hulubei National Institute of Physics and Nuclear Engin

A search for the doubly charmed baryon Ξcc+ is performed through its decay to the Λ+c K−π+ final state, using proton-proton collision data collected with the LHCb detector at centre-of-mass energies of 7, 8 and 13 TeV. The data correspond to a total integrated luminosity of 9 fb−1. No significant signal is observed in the mass range from 3.4 to 3.8 GeV/c2. Upper limits are set at 95% credibility level on the ratio of the Ξcc+ production cross-section times the branching fraction to that of Λ+c and Ξcc++ baryons. The limits are determined as functions of the Ξcc+ mass for different lifetime hypotheses, in the rapidity range from 2.0 to 4.5 and the transverse momentum range from 4 to 15 GeV/c. Copyright © 2019, The Authors. All rights reserved.

关键词： Germanium alloys

Measurement of the mass and production rate of Ξb− baryons

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arXiv 2019年

作者： Aaij, R. Abellán Beteta, C. Adeva, B. Adinolfi, M. Aidala, C.A. Ajaltouni, Z. Akar, S. Albicocco, P. Albrecht, J. Alessio, F. Alexander, M. Alfonso Albero, A. Alkhazov, G. Alvarez Cartelle, P. Alves Jr, A.A. Amato, S. Amerio, S. Amhis, Y. An, L. Anderlini, L. Andreassi, G. Andreotti, M. Andrews, J.E. Archilli, F. d’Argent, P. Arnau Romeu, J. Artamonov, A. Artuso, M. Arzymatov, K. Aslanides, E. Atzeni, M. Audurier, B. Bachmann, S. Back, J.J. Baker, S. Balagura, V. Baldini, W. Baranov, A. Barlow, R.J. Barrand, G.C. Barsuk, S. Barter, W. Bartolini, M. Baryshnikov, F. Batozskaya, V. Batsukh, B. Battig, A. Battista, V. Bay, A. Beddow, J. Bedeschi, F. Bediaga, I. Beiter, A. Bel, L.J. Belin, S. Beliy, N. Bellee, V. Belloli, N. Belous, K. Belyaev, I. Ben-Haim, E. Bencivenni, G. Benson, S. Beranek, S. Berezhnoy, A. Bernet, R. Berninghoff, D. Bertholet, E. Bertolin, A. Betancourt, C. Betti, F. Bettler, M.O. van Beuzekom, M. Bezshyiko, Ia. Bhasin, S. Bhom, J. Bieker, M.S. Bifani, S. Billoir, P. Birnkraut, A. Bizzeti, A. Bjørn, M. Blago, M.P. Blake, T. Blanc, F. Blusk, S. Bobulska, D. Bocci, V. Boente Garcia, O. Boettcher, T. Bondar, A. Bondar, N. Borghi, S. Borisyak, M. Borsato, M. Boubdir, M. Bowcock, T.J.V. Bozzi, C. Braun, S. Brodski, M. Brodzicka, J. Brossa Gonzalo, A. Brundu, D. Buchanan, E. Buonaura, A. Burr, C. Bursche, A. Buytaert, J. Byczynski, W. Cadeddu, S. Cai, H. Calabrese, R. Calladine, R. Calvi, M. Calvo Gomez, M. Camboni, A. Campana, P. Campora Perez, D.H. Capriotti, L. Carbone, A. Carboni, G. Cardinale, R. Cardini, A. Carniti, P. Carvalho Akiba, K. Casse, G. Cattaneo, M. Cavallero, G. Cenci, R. Chamont, D. Chapman, M.G. Charles, M. Charpentier, Ph. Chatzikonstantinidis, G. Chefdeville, M. Chekalina, V. Chen, C. Chen, S. Chitic, S.-G. Chobanova, V. Chrzaszcz, M. Chubykin, A. Ciambrone, P. Cid Vidal, X. Ciezarek, G. Cindolo, F. Clarke, P.E.L. Clemencic, M. Cliff, H.V. Closier, J. Coco, V. Coelho, J.A.B. Cogan, J. Cogneras, E. Rio de Janeiro Brazil Rio de Janeiro Brazil Center for High Energy Physics Tsinghua University Beijing China Beijing China Univ. Grenoble Alpes Univ. Savoie Mont Blanc CNRS IN2P3-LAPP Annecy France Université Clermont Auvergne CNRS/IN2P3 LPC Clermont-Ferrand France Aix Marseille Univ CNRS/IN2P3 CPPM Marseille France LAL Univ. Paris-Sud CNRS/IN2P3 Université Paris-Saclay Orsay France LPNHE Sorbonne Université Paris Diderot Sorbonne Paris Cité CNRS/IN2P3 Paris France I. Physikalisches Institut RWTH Aachen University Aachen Germany Fakultät Physik Technische Universität Dortmund Dortmund Germany Heidelberg Germany Physikalisches Institut Ruprecht-Karls-Universität Heidelberg Heidelberg Germany School of Physics University College Dublin Dublin Ireland INFN Sezione di Bari Bari Italy INFN Sezione di Bologna Bologna Italy INFN Sezione di Ferrara Ferrara Italy INFN Sezione di Firenze Firenze Italy INFN Laboratori Nazionali di Frascati Frascati Italy INFN Sezione di Genova Genova Italy INFN Sezione di Milano-Bicocca Milano Italy INFN Sezione di Milano Milano Italy INFN Sezione di Cagliari Monserrato Italy INFN Sezione di Padova Padova Italy INFN Sezione di Pisa Pisa Italy INFN Sezione di Roma Tor Vergata Roma Italy INFN Sezione di Roma La Sapienza Roma Italy Nikhef National Institute for Subatomic Physics Amsterdam Netherlands Nikhef National Institute for Subatomic Physics VU University Amsterdam Amsterdam Netherlands Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences Kraków Poland AGH - University of Science and Technology Faculty of Physics and Applied Computer Science Kraków Poland Warsaw Poland Horia Hulubei National Institute of Physics and Nuclear Engineering Bucharest-Magurele Romania Moscow Russia Moscow Russia Moscow Russia Yandex School of Data Analysis Moscow Russia National Research University Higher School of Economics Moscow Russia Novosibirsk Russia Protvino Russia Kon

The first measurement of the production rate of Ξb− baryons in pp collisions relative to that of Λ0b baryons is reported, using data samples collected by the LHCb experiment, and corresponding to integrated luminosities of 1, 2 and 1.6 fb−1 at √s = 7, 8 and 13 TeV, respectively. In the kinematic region 2 T Ξb − and fΛ0b are the fragmentation fractions of b quarks into Ξb− and Λ0b baryons, respectively, B represents branching fractions, and the uncertainties are due to statistical and experimental systematic sources. The values of fΞb −/fΛ0b are obtained by invoking SU(3) symmetry in the _Ξb− → J/ψΞ− and Λ0b → J/ψΛ decays. Production asymmetries between Ξb− and Ξ+b baryons are also reported. The mass of the Ξb− baryon is also measured relative to that of the Λ0b baryon, from which it is found that m(Ξb−) = 5796.70 ± 0.39 ± 0.15 ± 0.17 MeV/c2, where the last uncertainty is due to the precision on the known Λ0b mass. This result represents the most precise determination of the Ξb− mass. Copyright © 2019, The Authors. All rights reserved.

关键词： Hadrons

Corrigendum to “Iron isotopic fractionation in mineral phases from Earth's lower mantle: Did terrestrial magma ocean crystallization fractionate iron isotopes?” [Earth Planet. Sci. Lett. 506 (2019) 113–122]

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Earth and Planetary science Letters 2019年 524卷

作者： Hong Yang Jung-Fu Lin Michael Y. Hu Mathieu Roskosz Wenli Bi Jiyong Zhao Esen E. Alp Jin Liu Jiachao Liu Renata M. Wentzcovitch Takuo Okuchi Nicolas Dauphas Center for High Pressure Science and Technology Advanced Research (HPSTAR) Pudong Shanghai 201203 China Department of Geological Sciences Jackson School of Geosciences University of Texas at Austin Austin TX78712 USA Advanced Photon Source Argonne National Laboratory Argonne IL60439 USA IMPMC – UMR CNRS 7590 Sorbonne Universités UPMC IRD MNHN Muséum National d'Histoire Naturelle 61 rue Buffon 75005 Paris France Department of Geology University of Illinois at Urbana-Champaign Urbana IL 61801 USA Department of Applied Physics and Applied Mathematics and Department of Earth and Environmental Sciences Lamont-Doherty Earth Observatory Columbia University New York NY 10027 USA Institute for Planetary Materials Okayama University Misasa Tottori 682-0193 Japan Origins Laboratory Department of the Geophysical Sciences and Enrico Fermi Institute The University of Chicago Chicago IL 60637 USA

A constructive approach to L0 penalized regression

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The Journal of Machine Learning Research

The Journal of Machine Learning Research 2018年第1期19卷

作者： Jian Huang Yuling Jiao Yanyan Liu Xiliang Lu Department of Applied Mathematics The Hong Kong Polytechnic University Hung Hom Kowloon Hong Kong China School of Statistics and Mathematics Zhongnan University of Economics and Law Wuhan China and Institute of Big Data of Zhongnan University of Economics and Law School of Mathematics and Statistics Wuhan University Wuhan China School of Mathematics and Statistics Wuhan University Wuhan China and Hubei Key Laboratory of Computational Science

We propose a constructive approach to estimating sparse, high-dimensional linear regression models. The approach is a computational algorithm motivated from the KKT conditions for the l0-penalized least squares solutions. It generates a sequence of solutions iteratively, based on support detection using primal and dual information and root finding. We refer to the algorithm as SDAR for brevity. Under a sparse Riesz condition on the design matrix and certain other conditions, we show that with high probability, the l2 estimation error of the solution sequence decays exponentially to the minimax error bound in O(log(Rp√J)) iterations, where J is the number of important predictors and R is the relative magnitude of the nonzero target coefficients; and under a mutual coherence condition and certain other conditions, the l∞ estimation error decays to the optimal error bound in O(log(R)) iterations. Moreover the SDAR solution recovers the oracle least squares estimator within a finite number of iterations with high probability if the sparsity level is known. Computational complexity analysis shows that the cost of SDAR is O(np) per iteration. We also consider an adaptive version of SDAR for use in practical applications where the true sparsity level is unknown. Simulation studies demonstrate that SDAR outperforms Lasso, MCP and two greedy methods in accuracy and efficiency.

关键词： KKT conditions geometrical convergence nonasymptotic error bounds oracle property root finding support detection