期刊
PHYSICS LETTERS B
卷 725, 期 1-3, 页码 123-126出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physletb.2013.06.052
关键词
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资金
- Theory-LHC France-initiative of the CNRS/IN2P3
- French ANR [12 JS05 002 01 BATS@LHC]
We investigate trilepton final states to probe top anomalous couplings at the Large Hadron Collider. We focus on events originating from the associated production of a single top quark with a Z-boson, a channel sensitive to several flavor-changing neutral interactions of top and up/charm quarks. In particular, we explore a way to access simultaneously their anomalous couplings to Z-bosons and gluons and derive the discovery potential of trilepton final states to such interactions with 20 fb(-1) of 8 TeV collisions. We show that effective coupling strengths of (sic)(0.1-1) TeV-1 can be reached. Equivalently, branching fractions of top quarks into lighter quarks and gluons or Z-bosons can be constrained to be below (sic)(0.1-1)%. 2013 Elsevier B.V. All rights reserved.
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