Right-handed interactions in puzzling B-decays

We explain the difference between the measured decay widths of b→cτν processes and of B→Kνν¯ and their values predicted in the Standard Model by introducing the right-handed interactions both to quarks and to leptons. At low energy scales, in addition to the Standard Model particles, we assume the p...

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Main Authors: Damir Bečirević, Svjetlana Fajfer, Nejc Košnik, Lovre Pavičić
Format: Article
Language:English
Published: Elsevier 2025-02-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269325000450
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author Damir Bečirević
Svjetlana Fajfer
Nejc Košnik
Lovre Pavičić
author_facet Damir Bečirević
Svjetlana Fajfer
Nejc Košnik
Lovre Pavičić
author_sort Damir Bečirević
collection DOAJ
description We explain the difference between the measured decay widths of b→cτν processes and of B→Kνν¯ and their values predicted in the Standard Model by introducing the right-handed interactions both to quarks and to leptons. At low energy scales, in addition to the Standard Model particles, we assume the presence of an additional neutral lepton (right-handed neutrino). We then show a specific realization of such a scenario in a model with a single scalar leptoquark (S1), and discuss the corresponding phenomenology.
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id doaj-art-d2d1adba072644b3a1fe3cb268980ad5
institution Kabale University
issn 0370-2693
language English
publishDate 2025-02-01
publisher Elsevier
record_format Article
series Physics Letters B
spelling doaj-art-d2d1adba072644b3a1fe3cb268980ad52025-02-10T04:34:09ZengElsevierPhysics Letters B0370-26932025-02-01861139285Right-handed interactions in puzzling B-decaysDamir Bečirević0Svjetlana Fajfer1Nejc Košnik2Lovre Pavičić3IJCLab, Pôle Théorie (Bat. 210), CNRS/IN2P3 et Université Paris-Saclay, 91405 Orsay, FranceDepartment of Physics, University of Ljubljana, Jadranska 19, 1000 Ljubljana, Slovenia; Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, SloveniaDepartment of Physics, University of Ljubljana, Jadranska 19, 1000 Ljubljana, Slovenia; Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, SloveniaJožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia; Corresponding author.We explain the difference between the measured decay widths of b→cτν processes and of B→Kνν¯ and their values predicted in the Standard Model by introducing the right-handed interactions both to quarks and to leptons. At low energy scales, in addition to the Standard Model particles, we assume the presence of an additional neutral lepton (right-handed neutrino). We then show a specific realization of such a scenario in a model with a single scalar leptoquark (S1), and discuss the corresponding phenomenology.http://www.sciencedirect.com/science/article/pii/S0370269325000450
spellingShingle Damir Bečirević
Svjetlana Fajfer
Nejc Košnik
Lovre Pavičić
Right-handed interactions in puzzling B-decays
Physics Letters B
title Right-handed interactions in puzzling B-decays
title_full Right-handed interactions in puzzling B-decays
title_fullStr Right-handed interactions in puzzling B-decays
title_full_unstemmed Right-handed interactions in puzzling B-decays
title_short Right-handed interactions in puzzling B-decays
title_sort right handed interactions in puzzling b decays
url http://www.sciencedirect.com/science/article/pii/S0370269325000450
work_keys_str_mv AT damirbecirevic righthandedinteractionsinpuzzlingbdecays
AT svjetlanafajfer righthandedinteractionsinpuzzlingbdecays
AT nejckosnik righthandedinteractionsinpuzzlingbdecays
AT lovrepavicic righthandedinteractionsinpuzzlingbdecays