Regular Article - Theoretical Physics
Measuring CP nature of coupling at collider
SGTB Khalsa College, University of Delhi (DU), Delhi, India
2 Department of Physics and Astrophysics, University of Delhi, Delhi, India
3 School of Physics and Institute for Collider Particle Physics, University of the Witwatersrand, Wits, 2050, Johannesburg, South Africa
Accepted: 17 May 2022
Published online: 15 June 2022
The proposed future collider provides sufficient energies to produce the Standard Model Higgs Boson (h) through and Z-Boson fusion in charged and neutral current modes, respectively and to measure its properties. We take this opportunity to investigate the prospect of measuring the CP properties of h through , where decays to a charged pion and a neutral pion in association with neutrino (anti-neutrino). An interesting CP sensitive angular observable between the two -leptons decay plane in the centre of mass frame is proposed and investigated in this work. For fixed electron energy of 150 GeV along with 7 (50) TeV of proton energy, the CP phase can be measured approximately to () at integrated luminosity of 1 ab for −80% polarised electron at 95% confidence level.
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