skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: CP violation in fourth generation quark decays

Abstract

We show that, if a fourth generation is discovered at the Tevatron or LHC, one could study CP violation (CPV) in b{sup '}{yields}s decays. Asymmetries could reach 30% for b{sup '}{yields}sZ for m{sub b{sup '}} < or approx. 350 GeV, while it could be greater than 50% for b{sup '}{yields}s{gamma} and extend to higher m{sub b{sup '}}. Branching ratios are 10{sup -3}-10{sup -5}, and CPV measurement requires tagging. Once measured, however, the CPV phase can be extracted with little theoretical uncertainty.

Authors:
 [1];  [1]
  1. National Center for Theoretical Sciences, National Taiwan University, Taipei, Taiwan 10617 (China)
Publication Date:
OSTI Identifier:
21325286
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 80; Journal Issue: 7; Other Information: DOI: 10.1103/PhysRevD.80.076005; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ASYMMETRY; BRANCHING RATIO; CERN LHC; CP INVARIANCE; FERMILAB TEVATRON; GEV RANGE 100-1000; PARTICLE DECAY; QUARKS

Citation Formats

Arhrib, Abdesslam, Faculte des Sciences et Techniques, Boite Postal 416 Tangier, Weishu, Hou, and Department of Physics, National Taiwan University, Taipei, Taiwan 10617. CP violation in fourth generation quark decays. United States: N. p., 2009. Web. doi:10.1103/PHYSREVD.80.076005.
Arhrib, Abdesslam, Faculte des Sciences et Techniques, Boite Postal 416 Tangier, Weishu, Hou, & Department of Physics, National Taiwan University, Taipei, Taiwan 10617. CP violation in fourth generation quark decays. United States. https://doi.org/10.1103/PHYSREVD.80.076005
Arhrib, Abdesslam, Faculte des Sciences et Techniques, Boite Postal 416 Tangier, Weishu, Hou, and Department of Physics, National Taiwan University, Taipei, Taiwan 10617. 2009. "CP violation in fourth generation quark decays". United States. https://doi.org/10.1103/PHYSREVD.80.076005.
@article{osti_21325286,
title = {CP violation in fourth generation quark decays},
author = {Arhrib, Abdesslam and Faculte des Sciences et Techniques, Boite Postal 416 Tangier and Weishu, Hou and Department of Physics, National Taiwan University, Taipei, Taiwan 10617},
abstractNote = {We show that, if a fourth generation is discovered at the Tevatron or LHC, one could study CP violation (CPV) in b{sup '}{yields}s decays. Asymmetries could reach 30% for b{sup '}{yields}sZ for m{sub b{sup '}} < or approx. 350 GeV, while it could be greater than 50% for b{sup '}{yields}s{gamma} and extend to higher m{sub b{sup '}}. Branching ratios are 10{sup -3}-10{sup -5}, and CPV measurement requires tagging. Once measured, however, the CPV phase can be extracted with little theoretical uncertainty.},
doi = {10.1103/PHYSREVD.80.076005},
url = {https://www.osti.gov/biblio/21325286}, journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 7,
volume = 80,
place = {United States},
year = {Thu Oct 01 00:00:00 EDT 2009},
month = {Thu Oct 01 00:00:00 EDT 2009}
}