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Title: R-parity violating effects in top quark flavor-changing neutral-current production at LHC

Abstract

In the minimal supersymmetric model the R-parity violating top quark interactions, which are so far weakly constrained, can induce various flavor-changing neutral-current (FCNC) productions for the top quark at the large hadron collider (LHC). In this work we assume the presence of the B-violating couplings and examine their contributions to the FCNC productions proceeding through the parton processes cg{yields}t, gg{yields}tc, cg{yields}t{gamma}, cg{yields}tZ and cg{yields}th. We find that all these processes can be greatly enhanced relative to the R-parity preserving predictions. In the parameter space allowed by current experiments, all the production channels except cg{yields}th can reach the 3{sigma} sensitivity, in contrast to the R-parity preserving case in which only cg{yields}t can reach the 3{sigma} sensitivity.

Authors:
 [1]; ;  [2];  [1]
  1. College of Physics and Information Engineering, Henan Normal University, Xinxiang 453007 (China)
  2. Institute of Theoretical Physics and Kavli Institute for Theoretical Physics China, Academia Sinica, Beijing 100190 (China)
Publication Date:
OSTI Identifier:
21260075
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 79; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevD.79.054003; (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; CERN LHC; COUPLING; FLAVOR MODEL; FORECASTING; INTERACTIONS; NEUTRAL CURRENTS; PARITY; SENSITIVITY; SIMULATION; SUPERSYMMETRY; T QUARKS

Citation Formats

Junjie, Cao, Ottawa-Carleton Institute for Physics, Carleton University, Ottawa, K1S 5B6, Zhaoxia, Heng, Jinmin, Yang, and Lei, Wu. R-parity violating effects in top quark flavor-changing neutral-current production at LHC. United States: N. p., 2009. Web. doi:10.1103/PHYSREVD.79.054003.
Junjie, Cao, Ottawa-Carleton Institute for Physics, Carleton University, Ottawa, K1S 5B6, Zhaoxia, Heng, Jinmin, Yang, & Lei, Wu. R-parity violating effects in top quark flavor-changing neutral-current production at LHC. United States. https://doi.org/10.1103/PHYSREVD.79.054003
Junjie, Cao, Ottawa-Carleton Institute for Physics, Carleton University, Ottawa, K1S 5B6, Zhaoxia, Heng, Jinmin, Yang, and Lei, Wu. 2009. "R-parity violating effects in top quark flavor-changing neutral-current production at LHC". United States. https://doi.org/10.1103/PHYSREVD.79.054003.
@article{osti_21260075,
title = {R-parity violating effects in top quark flavor-changing neutral-current production at LHC},
author = {Junjie, Cao and Ottawa-Carleton Institute for Physics, Carleton University, Ottawa, K1S 5B6 and Zhaoxia, Heng and Jinmin, Yang and Lei, Wu},
abstractNote = {In the minimal supersymmetric model the R-parity violating top quark interactions, which are so far weakly constrained, can induce various flavor-changing neutral-current (FCNC) productions for the top quark at the large hadron collider (LHC). In this work we assume the presence of the B-violating couplings and examine their contributions to the FCNC productions proceeding through the parton processes cg{yields}t, gg{yields}tc, cg{yields}t{gamma}, cg{yields}tZ and cg{yields}th. We find that all these processes can be greatly enhanced relative to the R-parity preserving predictions. In the parameter space allowed by current experiments, all the production channels except cg{yields}th can reach the 3{sigma} sensitivity, in contrast to the R-parity preserving case in which only cg{yields}t can reach the 3{sigma} sensitivity.},
doi = {10.1103/PHYSREVD.79.054003},
url = {https://www.osti.gov/biblio/21260075}, journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 5,
volume = 79,
place = {United States},
year = {Sun Mar 01 00:00:00 EST 2009},
month = {Sun Mar 01 00:00:00 EST 2009}
}