Top-philic Z' forces at the LHC

Fox, Patrick J.; Low, Ian; Zhang, Yue

doi:10.1007/JHEP03(2018)074

Title: Top-philic Z' forces at the LHC

Journal Article · Tue Mar 13 00:00:00 EDT 2018 · Journal of High Energy Physics (Online)

DOI:https://doi.org/10.1007/JHEP03(2018)074· OSTI ID:1426667

Fox, Patrick J. ^[1]; Low, Ian ^[2]; Zhang, Yue ^[3]

Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Argonne National Lab. (ANL), Argonne, IL (United States); Northwestern Univ., Evanston, IL (United States); European Organization for Nuclear Research (CERN), Geneva (Switzerland)
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Northwestern Univ., Evanston, IL (United States)

Despite extensive searches for an additional neutral massive gauge boson at the LHC, a Z' at the weak scale could still be present if its couplings to the first two generations of quarks are suppressed, in which case the production in hadron colliders relies on treelevel processes in association with heavy avors or one-loop processes in association with a jet. We consider the low-energy effective theory of a top-philic Z0 and present possible UV completions. We clarify theoretical subtleties in evaluating the production of a top-philic Z' at the LHC and examine carefully the treatment of an anomalous Z' current in the low energy effective theory. Recipes for properly computing the production rate in the Z' + j channel are given. We discuss constraints from colliders and low-energy probes of new physics. As an application, we apply these considerations to models that use a weak-scale Z' to explain possible violations of lepton universality in B meson decays, and show that the future running of a high luminosity LHC can potentially cover much of the remaining parameter space favored by this particular interpretation of the B physics anomaly.

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Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP); Northwestern Univ., Evanston, IL (United States); USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC02-07CH11359; SC0010143; AC02-06CH11357; SC0007859

OSTI ID:: 1426667

Alternate ID(s):: OSTI ID: 1490088

Report Number(s):: FERMILAB-PUB-18-005-T; NUHEP-TH-18-01; arXiv:1801.03505; 1647561; TRN: US1802447

Journal Information:: Journal of High Energy Physics (Online), Vol. 2018, Issue 3; ISSN 1029-8479

Publisher:: Springer BerlinCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 22 works

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