Bulletin of the American Physical Society
APS April Meeting 2019
Volume 64, Number 3
Saturday–Tuesday, April 13–16, 2019; Denver, Colorado
Session X15: Collider and BSM V
10:45 AM–12:09 PM,
Tuesday, April 16, 2019
Sheraton
Room: Plaza Court 4
Sponsoring
Unit:
DPF
Chair: Kate Whalen, CERN
Abstract: X15.00005 : Probing leptoquark chirality via top polarization at the colliders
11:33 AM–11:45 AM
Presenter:
Joydeep Roy
(Institute of Theoretical Physics, Beijing)
Author:
Joydeep Roy
(Institute of Theoretical Physics, Beijing)
Anomalies in recent LHCb, Belle and Babar measurements of , and
, in B decays may indicate the new physics beyond the Standard Model (SM). The leptoquarks (LQ) that couple to the generation quarks and leptons have been proposed as a viable new physics (NP) explanation. Such left-handed LQs can couple to both bottom and top quarks. Since top particles decay before the hadronization, it is possible to reconstruct chirality of boosted top quarks and consequently the chirality of top coupling to the LQs. We perform analysis on the top quark's chirality in the pair-production channel of the LQ, which can be purely left-handed in comparison to unpolarized tt¯ SM background. We study the prospects of distinguishing the chirality of a potential LQ signal for the high luminosity run of the LHC and other future colliders.
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