CP violation in hadronic {tau} decays
Abstract
We reexamine CP violation in the {delta}S=0 decays {tau}{yields}N{pi}{nu}{sub {tau}} (N=2,3,4). We assume that the new physics (NP) is a charged Higgs boson. We show that there is no NP contribution to {tau}{yields}{pi}{pi}{nu}{sub {tau}}, which means that no CP violation is expected in this decay. On the other hand, NP can contribute to {tau}{yields}N{pi}{nu}{sub {tau}} (N=3,4). These are dominated by the intermediate resonant decays {tau}{yields}{omega}{pi}{nu}{sub {tau}}, {tau}{yields}{rho}{pi}{nu}{sub {tau}}, and {tau}{yields}a{sub 1}{pi}{nu}{sub {tau}}. We show that the only sizeable CPviolating effects which are possible are in {tau}{yields}a{sub 1}{pi}{nu}{sub {tau}}{yields}4{pi}{nu}{sub {tau}} (polarizationdependent rate asymmetry) and {tau}{yields}{omega}{pi}{nu}{sub {tau}} (tripleproduct asymmetry)
 Authors:
 Dept of Physics and Astronomy, 108 Lewis Hall, University of Mississippi, Oxford, Mississippi 386771848 (United States)
 Physics Department, Taylor University, 236 West Reade Avenue, Upland, Indiana, 46989 (United States)
 Physique des Particules, Universite de Montreal, C.P. 6128, succursale centreville, Montreal, QC, H3C 3J7 (Canada)
 Department of Physics, University of Toronto, 60 St. George Street, Toronto, ON, M5S 1A7 (Canada)
 Publication Date:
 OSTI Identifier:
 21020267
 Resource Type:
 Journal Article
 Resource Relation:
 Journal Name: Physical Review. D, Particles Fields; Journal Volume: 75; Journal Issue: 7; Other Information: DOI: 10.1103/PhysRevD.75.074007; (c) 2007 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; A11260 MESONS; ASYMMETRY; CP INVARIANCE; HIGGS BOSONS; NUCLEONS; OMEGA782 MESONS; PARTICLE DECAY; PIONS; POLARIZATION; RHO770 MESONS; TAU NEUTRINOS; TAU PARTICLES
Citation Formats
Datta, Alakabha, Kiers, Ken, London, David, Szynkman, Alejandro, and O'Donnell, Patrick J. CP violation in hadronic {tau} decays. United States: N. p., 2007.
Web. doi:10.1103/PHYSREVD.75.074007.
Datta, Alakabha, Kiers, Ken, London, David, Szynkman, Alejandro, & O'Donnell, Patrick J. CP violation in hadronic {tau} decays. United States. doi:10.1103/PHYSREVD.75.074007.
Datta, Alakabha, Kiers, Ken, London, David, Szynkman, Alejandro, and O'Donnell, Patrick J. Sun .
"CP violation in hadronic {tau} decays". United States.
doi:10.1103/PHYSREVD.75.074007.
@article{osti_21020267,
title = {CP violation in hadronic {tau} decays},
author = {Datta, Alakabha and Kiers, Ken and London, David and Szynkman, Alejandro and O'Donnell, Patrick J.},
abstractNote = {We reexamine CP violation in the {delta}S=0 decays {tau}{yields}N{pi}{nu}{sub {tau}} (N=2,3,4). We assume that the new physics (NP) is a charged Higgs boson. We show that there is no NP contribution to {tau}{yields}{pi}{pi}{nu}{sub {tau}}, which means that no CP violation is expected in this decay. On the other hand, NP can contribute to {tau}{yields}N{pi}{nu}{sub {tau}} (N=3,4). These are dominated by the intermediate resonant decays {tau}{yields}{omega}{pi}{nu}{sub {tau}}, {tau}{yields}{rho}{pi}{nu}{sub {tau}}, and {tau}{yields}a{sub 1}{pi}{nu}{sub {tau}}. We show that the only sizeable CPviolating effects which are possible are in {tau}{yields}a{sub 1}{pi}{nu}{sub {tau}}{yields}4{pi}{nu}{sub {tau}} (polarizationdependent rate asymmetry) and {tau}{yields}{omega}{pi}{nu}{sub {tau}} (tripleproduct asymmetry)},
doi = {10.1103/PHYSREVD.75.074007},
journal = {Physical Review. D, Particles Fields},
number = 7,
volume = 75,
place = {United States},
year = {Sun Apr 01 00:00:00 EDT 2007},
month = {Sun Apr 01 00:00:00 EDT 2007}
}

No abstract prepared.

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