Hidden sector explanation of $B$-decay and cosmic ray anomalies

There are presently several discrepancies in b→sℓ+ℓ- decays of B mesons suggesting new physics coupling to b quarks and leptons. We show that a Z′, with couplings to quarks and muons that can explain the B-decay anomalies, can also couple to dark matter in a way that is consistent with its relic abu...

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Detalles Bibliográficos
Autores principales: Cline, James M., Cornell, Jonathan M., London, David, Watanabe, Ryoutaro
Lenguaje:eng
Publicado: 2017
Materias:
astro-ph.HE
Astrophysics and Astronomy
hep-ph
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1103/PhysRevD.95.095015
http://cds.cern.ch/record/2244881
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author Cline, James M.
Cornell, Jonathan M.
London, David
Watanabe, Ryoutaro
author_facet Cline, James M.
Cornell, Jonathan M.
London, David
Watanabe, Ryoutaro
author_sort Cline, James M.
collection CERN
description There are presently several discrepancies in b→sℓ+ℓ- decays of B mesons suggesting new physics coupling to b quarks and leptons. We show that a Z′, with couplings to quarks and muons that can explain the B-decay anomalies, can also couple to dark matter in a way that is consistent with its relic abundance, direct detection limits, and hints of indirect detection. The latter include possible excess events in antiproton spectra recently observed by the AMS-02 experiment. We present two models, having a heavy (light) Z′ with mZ′∼600(12)  GeV and fermionic dark matter with mass mχ∼50(2000)  GeV, producing excess antiprotons with energies of ∼10(300)  GeV. The first model is also compatible with fits for the Galactic center GeV gamma-ray excess.
id cern-2244881
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2017
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spelling cern-22448812023-03-12T04:12:09Zdoi:10.1103/PhysRevD.95.095015http://cds.cern.ch/record/2244881engCline, James M.Cornell, Jonathan M.London, DavidWatanabe, RyoutaroHidden sector explanation of $B$-decay and cosmic ray anomaliesastro-ph.HEAstrophysics and Astronomyhep-phParticle Physics - PhenomenologyThere are presently several discrepancies in b→sℓ+ℓ- decays of B mesons suggesting new physics coupling to b quarks and leptons. We show that a Z′, with couplings to quarks and muons that can explain the B-decay anomalies, can also couple to dark matter in a way that is consistent with its relic abundance, direct detection limits, and hints of indirect detection. The latter include possible excess events in antiproton spectra recently observed by the AMS-02 experiment. We present two models, having a heavy (light) Z′ with mZ′∼600(12)  GeV and fermionic dark matter with mass mχ∼50(2000)  GeV, producing excess antiprotons with energies of ∼10(300)  GeV. The first model is also compatible with fits for the Galactic center GeV gamma-ray excess.There are presently several discrepancies in $b \to s \ell^+ \ell^-$ decays of $B$ mesons suggesting new physics coupling to $b$ quarks and leptons. We show that a $Z'$, with couplings to quarks and muons that can explain the $B$-decay anomalies, can also couple to dark matter in a way that is consistent with its relic abundance, direct detection limits, and hints of indirect detection. The latter include possible excess events in antiproton spectra recently observed by the AMS-02 experiment. We present two models, having a heavy (light) $Z'$ with $m_{Z'}\sim 600\,(12)\,$GeV and fermionic dark matter with mass $m_\chi \sim 50\,(2000)\,$GeV, producing excess antiprotons with energies of $\sim 10\, (300)\,$GeV. The first model is also compatible with fits for the galactic center GeV gamma-ray excess.arXiv:1702.00395CERN-TH-2017-025UDEM-GPP-TH-17-254oai:cds.cern.ch:22448812017-02-01
spellingShingle astro-ph.HE
Astrophysics and Astronomy
hep-ph
Particle Physics - Phenomenology
Cline, James M.
Cornell, Jonathan M.
London, David
Watanabe, Ryoutaro
Hidden sector explanation of $B$-decay and cosmic ray anomalies
title Hidden sector explanation of $B$-decay and cosmic ray anomalies
title_full Hidden sector explanation of $B$-decay and cosmic ray anomalies
title_fullStr Hidden sector explanation of $B$-decay and cosmic ray anomalies
title_full_unstemmed Hidden sector explanation of $B$-decay and cosmic ray anomalies
title_short Hidden sector explanation of $B$-decay and cosmic ray anomalies
title_sort hidden sector explanation of $b$-decay and cosmic ray anomalies
topic astro-ph.HE
Astrophysics and Astronomy
hep-ph
Particle Physics - Phenomenology
url https://dx.doi.org/10.1103/PhysRevD.95.095015
http://cds.cern.ch/record/2244881
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AT londondavid hiddensectorexplanationofbdecayandcosmicrayanomalies
AT watanaberyoutaro hiddensectorexplanationofbdecayandcosmicrayanomalies

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