Work

Parity violation in QCD process

Year: 2012

Type: article

Abstract: Parity violation in the QCD process is studied using helicity-dependent top-quark pair productions at the Large Hadron Collider experiment. Though no violation can be found in the standard model (SM), new physics beyond the SM predicts the violation in general. In order to evaluate the violation, we utilize an effective operator analysis in a case that new particles predicted by the new physics are too heavy to be directly detected. By using this method, we try to discriminate supersymmetric SM from a universal extra-dimension model via an asymmetry measurement of the top-quark pair production. We also discuss the asymmetry from the SM electroweak top pair production process and that from the little Higgs model.

Source: Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields

DOI: 10.1103/physrevd.85.014007

Authors: Naoyuki Haba, Kunio Kaneta, Shigeki Matsumoto, Takehiro Nabeshima, Soshi Tsuno

Institutions: The University of Osaka, Kavli Institute for the Physics and Mathematics of the Universe, The University of Tokyo, University of Toyama, High Energy Accelerator Research Organization

Language: English

Topic: Particle physics theoretical and experimental studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: Japan Society for the Promotion of Science

Awards: The search for new physics using the 3rd generation quarks at the LHC and the development of silicon detector, Model building in extra-dimensional theory and its analyses toward LHC・ILC experiments, Extra Dimensions, Origin of Generations and LHC Physics, research of new physics at LHC and ILC