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Title: Exotic decays of heavy B quarks

Heavy vector-like quarks of charge –1/3, B, have been searched for at the LHC through the decays B → bZ, bh, tW. In models where the B quark also carries charge under a new gauge group, new decay channels may dominate. We focus on the case where the B is charged under a U(1)' and describe simple models where the dominant decay mode is B → bZ' → b(bb¯¯). With the inclusion of dark matter such models can explain the excess of gamma rays from the Galactic center. We develop a search strategy for this decay chain and estimate that with integrated luminosity of 300 fb –1 the LHC will have the potential to discover both the B and the Z' for B quarks with mass below ~ 1.6 TeV, for a broad range of Z' masses. Furthermore, a high-luminosity run can extend this reach to 2 TeV.
Authors:
 [1] ;  [2]
  1. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  2. Williams College, Williamstown, MA (United States)
Publication Date:
Report Number(s):
FERMILAB-PUB-15-353-T
Journal ID: ISSN 1029-8479; arXiv eprint number arXiv:1509.00499
Grant/Contract Number:
AC02-07CH11359
Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2016; Journal Issue: 1; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Research Org:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; beyond standard model; rare decays
OSTI Identifier:
1234894

Fox, Patrick J., and Tucker-Smith, David. Exotic decays of heavy B quarks. United States: N. p., Web. doi:10.1007/JHEP01(2016)038.
Fox, Patrick J., & Tucker-Smith, David. Exotic decays of heavy B quarks. United States. doi:10.1007/JHEP01(2016)038.
Fox, Patrick J., and Tucker-Smith, David. 2016. "Exotic decays of heavy B quarks". United States. doi:10.1007/JHEP01(2016)038. https://www.osti.gov/servlets/purl/1234894.
@article{osti_1234894,
title = {Exotic decays of heavy B quarks},
author = {Fox, Patrick J. and Tucker-Smith, David},
abstractNote = {Heavy vector-like quarks of charge –1/3, B, have been searched for at the LHC through the decays B → bZ, bh, tW. In models where the B quark also carries charge under a new gauge group, new decay channels may dominate. We focus on the case where the B is charged under a U(1)' and describe simple models where the dominant decay mode is B → bZ' → b(bb¯¯). With the inclusion of dark matter such models can explain the excess of gamma rays from the Galactic center. We develop a search strategy for this decay chain and estimate that with integrated luminosity of 300 fb–1 the LHC will have the potential to discover both the B and the Z' for B quarks with mass below ~ 1.6 TeV, for a broad range of Z' masses. Furthermore, a high-luminosity run can extend this reach to 2 TeV.},
doi = {10.1007/JHEP01(2016)038},
journal = {Journal of High Energy Physics (Online)},
number = 1,
volume = 2016,
place = {United States},
year = {2016},
month = {1}
}