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检索条件"丛书名=Springer Proceedings in Physics"

共 4830 条记录，以下是11-20 订阅

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A Thought Experiment on Neutrino Oscillation

A Thought Experiment on Neutrino Oscillation

引用

2024 International Conference on Future Prospects in Neutrino and Astroparticle physics-ICFPNAP

作者： Chakraborty, Pralay Roy, Subhankar Gauhati Univ Dept Phys Gauhati India

ISBN: (纸本)9789819774432;9789819774418;9789819774401

We present a thought experiment and study the neutrino oscillation probability inside an infinite square well potential. Following Pontecorvo's approach, neutrino oscillation is visualized with respect to time for both relativistic and non-relativistic scenarios. In this regard, the dependence of the oscillation probability on the principle quantum number is seen. In addition, a contrasting result of non-zero oscillation probability is observed even if the neutrino mass eigenstates were degenerate.

关键词： Infinite Square Well Potential Neutrino Oscillation Non-Relativistic Case Relativistic Case

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A Spotlight on the μ-τ Mixed Symmetry

A Spotlight on the μ-τ Mixed Symmetry

引用

2024 International Conference on Future Prospects in Neutrino and Astroparticle physics-ICFPNAP

作者： Dey, Manash Chakraborty, Pralay Roy, Subhankar Gauhati Univ Dept Phys Gauhati 781014 Assam India

We study the elegant neutrino mass matrix texture referred to as ***-tau mixed symmetry, emphasizing two straightforward correlations among its elements. A comprehensive analysis is conducted to explore its phenomenol... 详细信息

ISBN: (纸本)9789819774432;9789819774418;9789819774401

关键词： Majorana neutrino mass matrix Neutrino mixing Seesaw mechanism μ-τ mixed symmetry

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Leptogenesis and Dark Matter Through Relativistic Bubble Walls

Leptogenesis and Dark Matter Through Relativistic Bubble Wal...

引用

2024 International Conference on Future Prospects in Neutrino and Astroparticle physics-ICFPNAP

作者： Saha, Indrajit Borah, Debasish Dasgupta, Arnab Indian Inst Technol Guwahati Dept Phys Gauhati 781039 Assam India Univ Pittsburgh Pittsburgh Particle Phys Astrophys & Cosmol Ctr Dept Phys & Astron Pittsburgh PA 15206 USA

ISBN: (纸本)9789819774432;9789819774418;9789819774401

We study a scenario where both dark matter (DM) and heavy right-handed neutrino (RHN) responsible for leptogenesis acquire masses by crossing the relativistic bubble walls formed as a result of a supercooled first-order phase transition above electroweak scale. This leads to a large out-of-equilibrium abundance of RHN inside the bubble sufficient to produce the required lepton asymmetry. A minimal scenario with three RHN, one inert scalar doublet and one singlet scalar as additional fields beyond the standard model is sufficient to realise this possibility which also favours inert RHN DM over inert scalar doublet. While low-scale leptogenesis scenario can be probed at future gravitational wave detectors like LISA, a sufficiently high-scale leptogenesis scenario can be constrained from LIGO-VIRGO data as well.

关键词： Dark matter Gravitational waves Leptogenesis Phase transition

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Neutrino Mass Sum Rules from Modular A4 Invariance

Neutrino Mass Sum Rules from Modular A4 Invariance

引用

2024 International Conference on Future Prospects in Neutrino and Astroparticle physics-ICFPNAP

作者： Chulia, Salvador Centelles Kumar, Ranjeet Popov, Oleg Srivastava, Rahul Max Planck Inst Kernphys Saupfercheckweg 1 D-69117 Heidelberg Germany Indian Inst Sci Educ & Res Bhopal Dept Phys ByPass Rd Bhopal India Shenzhen MSU BIT Univ Dept Biol 1 Int Univ Pk Rd Shenzhen 518172 Peoples R China

ISBN: (纸本)9789819774432;9789819774418;9789819774401

Modular symmetries are a novel approach to understanding the flavour structure of leptonic mixing. Using the modular. A(4) flavour symmetry integrated into a type-II seesaw, we propose a simple and minimalistic model that restricts the neutrino oscillation parameter space. Most importantly, this setup leads to a sum rule in the physical neutrino masses. When combined with the mass squared differences observed in neutrino oscillations, this sum rule determines the absolute neutrino mass scale. This has significant implications for cosmology, neutrinoless double beta decay experiments and direct neutrino mass measurements. In particular, the model predicts Sigma(i) m(i) approximate to 0.1 eV for both normal and inverted ordering, and thus can be fully probed by the current generation of cosmological probes in the upcoming years. Furthermore, our model has precise predictions for mixing angles which can be tested in future experiments.

关键词： 0νee Decay Modular symmetry Neutrino mass sum rules

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Light Majorons as Freeze-in Dark Matter

Light Majorons as Freeze-in Dark Matter

引用

2024 International Conference on Future Prospects in Neutrino and Astroparticle physics-ICFPNAP

作者： Manna, Soumen Kumar Sil, Arunansu Indian Inst Technol Guwahati Dept Phys Gauhati 781039 Assam India

ISBN: (纸本)9789819774432;9789819774418;9789819774401

We demonstrate that Majoron, a pseudo-Nambu-Goldstone boson emerging due to the spontaneous lepton number symmetry breaking, serves as potential freeze-in dark matter within the keV-GeV mass regime due to a newly introduced explicit lepton number symmetry breaking higher dimensional operator. The proposal establishes a link between dark matter and neutrino physics within a minimal extension of Standard model featuring a singlet complex scalar and two singlet right-handed neutrinos.

关键词： Dark matter Majoron Pseudo-Nambu-Goldstone Boson

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Two Minor Zeros in Neutrino Mass Matrix Using Trimaximal Neutrino Mixing

Two Minor Zeros in Neutrino Mass Matrix Using Trimaximal Neu...

引用

2024 International Conference on Future Prospects in Neutrino and Astroparticle physics-ICFPNAP

作者： Mazumder, Iffat Ara Dutta, Rupak Natl Inst Technol Silchar Silchar 788010 India

ISBN: (纸本)9789819774432;9789819774418;9789819774401

We explore the phenomenological implications of two minor zeros in neutrino mass matrix using trimaximal mixing matrix. In this context, we analyze 15 possible classes of two minor zeros in neutrino mass matrix and found that only two classes, namely class. A(1) and class. A(2) are allowed. We predict the absolute values of total neutrino masses, effective Majorana masses, the effective electron antineutrino mass, and Majorana CP-violating phases for these two classes. Furthermore, we analyze the correlations of neutrino oscillation parameters. We discuss a flavor model within the seesaw model along with Z(8) symmetry group for generating these classes.

关键词： CP violation Neutrino masses Neutrino mixing

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Perturbation to Golden Ratio Mixing and Charged Lepton Flavor Violation

Perturbation to Golden Ratio Mixing and Charged Lepton Flavo...

引用

2024 International Conference on Future Prospects in Neutrino and Astroparticle physics-ICFPNAP

作者： Puyam, Victoria Singh, Ngangkham Nimai Manipur Univ Dept Phys Imphal 795003 Manipur India Manipur Univ Res Inst Sci & Technol Imphal 795003 Manipur India

ISBN: (纸本)9789819774432;9789819774418;9789819774401

A(5) discrete symmetry group is used to construct a neutrino mass model that can reproduce deviation from the exact golden ratio mixing through the contribution from the charged lepton sector in the linear seesaw framework. We can obtain all the values of the neutrino oscillation parameters, including the Dirac CP-violating phase, within the current experimental bounds. The model predicts only normal neutrino mass ordering. Furthermore, we also study the charged lepton flavor violation (cLFV) process mu -> e + gamma. When the quasi-Dirac neutrino masses are in the (1-10) TeV range, this cLFV process is within reach of future planned experiments.

关键词： Inverted hierarchy Normal hierarchy Scalars

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Exploring New physics Effects on Leggett-Garg-Type Inequalities for NOvA and T2K

Exploring New Physics Effects on Leggett-Garg-Type Inequalit...

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2024 International Conference on Future Prospects in Neutrino and Astroparticle physics-ICFPNAP

作者： Vardani, Juhi Yadav, Bhavna Konwar, Lekhashri Indian Inst Technol Jodhpur Jodhpur 342037 Rajasthan India

ISBN: (纸本)9789819774432;9789819774418;9789819774401

The recent anomalies observed in NOvA and T2K experiments may serve as indications of physics extending beyond the standard model (SM). In this work, we analyzed the violation of Leggett-Garg-type Inequalities (LGtI) for NOvA and T2K experiments focusing on the Non-Standard Interaction (NSI) parameters that allow such anomalies. We find that LGtI violation enhanced in the presence of NSI in normal ordering (NO) instead of inverted ordering (IO) in NOvA and T2K experiments. Moreover, LGtI parameter gives a clear distinction between SM and NSI for NO.

关键词： LGtI New physics NSI

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Scalar NSI: A Unique Probe to Explore New physics in Neutrinos

Scalar NSI: A Unique Probe to Explore New Physics in Neutrin...

引用

2024 International Conference on Future Prospects in Neutrino and Astroparticle physics-ICFPNAP

作者： Medhi, Abinash Sarker, Arnab Bezboruah, Dharitree Devi, Moon Moon Dutta, Debajyoti Tezpur Univ Sonitpur 784028 Assam India Indian Inst Technol Guwahati Gauhati 781039 Assam India Bhattadev Univ Bajali 781325 Assam India

ISBN: (纸本)9789819774432;9789819774418;9789819774401

The discovery of neutrino oscillations marked a groundbreaking moment, presenting the first experimental evidence of physics beyond the Standard Model (BSM). The BSM physics exploration often involves Non-Standard Interactions (NSIs), introducing unknown neutrino couplings. Scalar NSI, a unique interaction between neutrinos and matter fermions through a scalar, manifests as a medium-dependent correction to the neutrino mass term, introducing unique phenomenology in neutrino oscillations. This study delves into the impact of scalar NSI on the measurement sensitivities of oscillation parameters in upcoming long-baseline experiments (DUNE, T2HK, T2HKK). Scalar NSI introduces medium-dependent corrections to neutrino mass terms, influencing oscillation probabilities and detector event rates. Through a synergy study among experiments (DUNE+T2HK, DUNE+T2HKK), enhanced capabilities are demonstrated in constraining scalar NSI parameters, improving sensitivity to CP-violation and mass hierarchy. The exploration of scalar NSI also emerges as a valuable avenue for constraining absolute neutrino masses in the realm of neutrino oscillation experiments.

关键词： Beyond Standard Model Neutrino Oscillations Non-Standard Interactions

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Relevance of Golden Ratio in Neutrino physics

Relevance of Golden Ratio in Neutrino Physics

引用

2024 International Conference on Future Prospects in Neutrino and Astroparticle physics-ICFPNAP

作者： Singh, Ngangkham Nimai Singh, Y. Monitar Manipur Univ Dept Phys Imphal 795003 India Res Inst Sci & Technol RIST Imphal 795003 Manipur India

ISBN: (纸本)9789819774432;9789819774418;9789819774401

We study the implication of golden ratio in neutrino physics where the solar mixing angle (theta(12)) which is one of the three neutrino mixing angles is closely related to this ratio. An exact leptonic mixing pattern which predicts golden ratio can be generated by certain discrete symmetry groups such as A(5). We use these three mixing angles given by the exact golden ratio neutrino mixing pattern as input values at a high energy scale, to obtain the low energy neutrino oscillation parameters through the numerical analysis of the relevant renormalization group equations (RGEs) of neutrino masses and mixing angles. Such radiative correction establishes the validity of golden ratio neutrino mixings defined at high energy scale from certain discrete symmetry, consistent with latest Planck cosmological data Sigma |m(i) | < 0.12 eV, for normal hierarchical mass model at a larger value of tan beta > 60 and SUSY breaking scale m(s)=1TeV. The sensitivity on the values of Sigma|m(i) | on m(s) is also discussed.

关键词： Golden ratio Neutrino mixing Radiative corrections Renormalization group equations

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