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

Journal Article · Sun Mar 01 04:00:00 EST 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.79.054003· OSTI ID:21260075

Junjie, Cao ^[1]; Zhaoxia, Heng; Jinmin, Yang ^[2]; Lei, Wu ^[1]

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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)

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.

• OSTI ID: 21260075
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 5 Vol. 79; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CERN LHC
COUPLING
FLAVOR MODEL
FORECASTING
INTERACTIONS
NEUTRAL CURRENTS
PARITY
SENSITIVITY
SIMULATION
SUPERSYMMETRY
T QUARKS