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Title: NLO+NLL collider bounds, Dirac fermion and scalar dark matter in the B–L model

Abstract

Baryon and lepton numbers being accidental global symmetries of the Standard Model (SM), it is natural to promote them to local symmetries. However, to preserve anomaly-freedom, only combinations of B–L are viable. In this spirit, we investigate possible dark matter realizations in the context of the U(1)B-L model: (i) Dirac fermion with unbroken B–L; (ii) Dirac fermion with broken B–L; (iii) scalar dark matter; (iv) two-component dark matter.We compute the relic abundance, direct and indirect detection observables and confront them with recent results from Planck, LUX-2016, and Fermi-LAT and prospects from XENON1T. In addition to the well-known LEP bound MZ' /gBL 7 TeV, we include often ignored LHC bounds using 13 TeV dilepton (dimuon + dielectron) data at next-to-leading order plus nextto- leading logarithmic accuracy. We show that, for gauge couplings smaller than 0.4, theLHCgives rise to the strongest collider limit. In particular, we find MZ' /gBL > 8.7 TeV for gBL = 0.3. We conclude that the NLO+NLL corrections improve the dilepton bounds on the Z mass and that both dark matter candidates are only viable in the Z' resonance region, with the parameter space for scalar dark matter being fully probed by XENON1T. Lastly, we show that onemore » can successfully have a minimal two-component dark matter model.« less

Authors:
; ;
Publication Date:
Research Org.:
Southern Methodist University, Inc., Dallas, TX (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1358651
Alternate Identifier(s):
OSTI ID: 1389284
Grant/Contract Number:  
SC0010129; 05H15PMCCA
Resource Type:
Published Article
Journal Name:
European Physical Journal. C, Particles and Fields
Additional Journal Information:
Journal Name: European Physical Journal. C, Particles and Fields Journal Volume: 77 Journal Issue: 5; Journal ID: ISSN 1434-6044
Publisher:
Springer
Country of Publication:
Germany
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Klasen, Michael, Lyonnet, Florian, and Queiroz, Farinaldo S. NLO+NLL collider bounds, Dirac fermion and scalar dark matter in the B–L model. Germany: N. p., 2017. Web. doi:10.1140/epjc/s10052-017-4904-8.
Klasen, Michael, Lyonnet, Florian, & Queiroz, Farinaldo S. NLO+NLL collider bounds, Dirac fermion and scalar dark matter in the B–L model. Germany. https://doi.org/10.1140/epjc/s10052-017-4904-8
Klasen, Michael, Lyonnet, Florian, and Queiroz, Farinaldo S. Thu . "NLO+NLL collider bounds, Dirac fermion and scalar dark matter in the B–L model". Germany. https://doi.org/10.1140/epjc/s10052-017-4904-8.
@article{osti_1358651,
title = {NLO+NLL collider bounds, Dirac fermion and scalar dark matter in the B–L model},
author = {Klasen, Michael and Lyonnet, Florian and Queiroz, Farinaldo S.},
abstractNote = {Baryon and lepton numbers being accidental global symmetries of the Standard Model (SM), it is natural to promote them to local symmetries. However, to preserve anomaly-freedom, only combinations of B–L are viable. In this spirit, we investigate possible dark matter realizations in the context of the U(1)B-L model: (i) Dirac fermion with unbroken B–L; (ii) Dirac fermion with broken B–L; (iii) scalar dark matter; (iv) two-component dark matter.We compute the relic abundance, direct and indirect detection observables and confront them with recent results from Planck, LUX-2016, and Fermi-LAT and prospects from XENON1T. In addition to the well-known LEP bound MZ' /gBL 7 TeV, we include often ignored LHC bounds using 13 TeV dilepton (dimuon + dielectron) data at next-to-leading order plus nextto- leading logarithmic accuracy. We show that, for gauge couplings smaller than 0.4, theLHCgives rise to the strongest collider limit. In particular, we find MZ' /gBL > 8.7 TeV for gBL = 0.3. We conclude that the NLO+NLL corrections improve the dilepton bounds on the Z mass and that both dark matter candidates are only viable in the Z' resonance region, with the parameter space for scalar dark matter being fully probed by XENON1T. Lastly, we show that one can successfully have a minimal two-component dark matter model.},
doi = {10.1140/epjc/s10052-017-4904-8},
journal = {European Physical Journal. C, Particles and Fields},
number = 5,
volume = 77,
place = {Germany},
year = {Thu May 25 00:00:00 EDT 2017},
month = {Thu May 25 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1140/epjc/s10052-017-4904-8

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Cited by: 64 works
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