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Title: Bottom-quark forward-backward asymmetry, dark matter, and the LHC

Journal Article · · Physical Review. D.

The LEP experiment at CERN provided accurate measurements of theZneutral gauge bosonproperties. Although all measurements agree well with the SM predictions, the forward backwardasymmetry of the bottom-quark remains almost 3σaway from the SM value. We proposed thatthis anomaly may be explained by the existence of a newU(1)Dgauge boson, which couples withopposite charges to the right-handed components of the bottom and charm quarks. Cancellation ofgauge anomalies demands the presence of a vector-like singlet charged lepton as well as a neutralDirac (or Majorana) particle that provides a Dark Matter candidate. Constraints from precisionmeasurements imply that the mass of the new gauge boson should be around 115 GeV. We discussthe experimental constraints on this scenario, including the existence of a di-jet resonance excessat an invariant mass similar to the mass of this new gauge boson, observed in boosted topologiesat the CMS experiment

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States); Univ. of Chicago, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
FG02-13ER41958; SC0009924; AC02-06CH11357
OSTI ID:
1426332
Alternate ID(s):
OSTI ID: 1557664; OSTI ID: 1594040
Journal Information:
Physical Review. D., Journal Name: Physical Review. D. Vol. 97 Journal Issue: 5; ISSN 2470-0010
Publisher:
American Physical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 12 works
Citation information provided by
Web of Science

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