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Title: Resonant CP violation in Higgs radiation at an e{sup +}e{sup -} linear collider

Abstract

We study resonant CP violation in the Higgsstrahlung process e{sup +}e{sup -}{yields}H{sub 1,2,3}(Z{yields}e{sup +}e{sup -},{mu}{sup +}{mu}{sup -}) and subsequent decays H{sub 1,2,3}{yields}bb,{tau}{sup -}{tau}{sup +}, in the minimal supersymmetric extension of the standard model (MSSM) with Higgs-sector CP violation induced by radiative corrections. At a high-energy e{sup +}e{sup -} linear collider, the recoil-mass method enables one to determine the invariant mass of a fermion pair produced by Higgs decays with a precision as good as 1 GeV. Assuming an integrated luminosity of 100 fb{sup -1}, we show that the production line shape of a coupled system of neutral Higgs bosons decaying into bb quarks is sensitive to the CP-violating parameters. When the Higgs bosons decay into {tau}{sup -}{tau}{sup +}, two CP asymmetries can be defined using the longitudinal and transverse polarizations of the {tau} leptons. Taking into account the constraints from electric dipole moments, we find that these CP asymmetries can be as large as 80%, in a trimixing scenario where all three neutral Higgs states of the MSSM are nearly degenerate and mix significantly.

Authors:
 [1]; ;  [2]
  1. Theory Division, Physics Department, CERN, CH-1211 Geneva 23 (Switzerland)
  2. School of Physics and Astronomy, University of Manchester, Manchester M13 9PL (United Kingdom)
Publication Date:
OSTI Identifier:
20713864
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 72; Journal Issue: 9; Other Information: DOI: 10.1103/PhysRevD.72.095006; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ASYMMETRY; CP INVARIANCE; ELECTRIC DIPOLE MOMENTS; ELECTRON-POSITRON INTERACTIONS; GEV RANGE; HIGGS BOSONS; HIGGS MODEL; LEPTONIC DECAY; LINEAR COLLIDERS; MUONS MINUS; MUONS PLUS; PAIR PRODUCTION; POLARIZATION; QUARKS; RADIATIVE CORRECTIONS; STANDARD MODEL; SUPERSYMMETRY; TAU PARTICLES; Z NEUTRAL BOSONS

Citation Formats

Ellis, John, Lee, Jae Sik, and Pilaftsis, Apostolos. Resonant CP violation in Higgs radiation at an e{sup +}e{sup -} linear collider. United States: N. p., 2005. Web. doi:10.1103/PhysRevD.72.095006.
Ellis, John, Lee, Jae Sik, & Pilaftsis, Apostolos. Resonant CP violation in Higgs radiation at an e{sup +}e{sup -} linear collider. United States. doi:10.1103/PhysRevD.72.095006.
Ellis, John, Lee, Jae Sik, and Pilaftsis, Apostolos. Tue . "Resonant CP violation in Higgs radiation at an e{sup +}e{sup -} linear collider". United States. doi:10.1103/PhysRevD.72.095006.
@article{osti_20713864,
title = {Resonant CP violation in Higgs radiation at an e{sup +}e{sup -} linear collider},
author = {Ellis, John and Lee, Jae Sik and Pilaftsis, Apostolos},
abstractNote = {We study resonant CP violation in the Higgsstrahlung process e{sup +}e{sup -}{yields}H{sub 1,2,3}(Z{yields}e{sup +}e{sup -},{mu}{sup +}{mu}{sup -}) and subsequent decays H{sub 1,2,3}{yields}bb,{tau}{sup -}{tau}{sup +}, in the minimal supersymmetric extension of the standard model (MSSM) with Higgs-sector CP violation induced by radiative corrections. At a high-energy e{sup +}e{sup -} linear collider, the recoil-mass method enables one to determine the invariant mass of a fermion pair produced by Higgs decays with a precision as good as 1 GeV. Assuming an integrated luminosity of 100 fb{sup -1}, we show that the production line shape of a coupled system of neutral Higgs bosons decaying into bb quarks is sensitive to the CP-violating parameters. When the Higgs bosons decay into {tau}{sup -}{tau}{sup +}, two CP asymmetries can be defined using the longitudinal and transverse polarizations of the {tau} leptons. Taking into account the constraints from electric dipole moments, we find that these CP asymmetries can be as large as 80%, in a trimixing scenario where all three neutral Higgs states of the MSSM are nearly degenerate and mix significantly.},
doi = {10.1103/PhysRevD.72.095006},
journal = {Physical Review. D, Particles Fields},
number = 9,
volume = 72,
place = {United States},
year = {Tue Nov 01 00:00:00 EST 2005},
month = {Tue Nov 01 00:00:00 EST 2005}
}