skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: R-Parity Violation and CP-Violating and CP-Conserving Spin Asymmetries in scr(l){sup +}scr(l){sup {minus}} {r_arrow} {tilde {nu}} {r_arrow} {tau}{sup +}{tau}{sup {minus}} : Probing Sneutrino Mixing at scr(l){sup +}scr(l){sup {minus}} Colliders

Abstract

We consider the sneutrino resonance reaction {ell}{sup +}{ell}{sup {minus}}{r_arrow}{tilde {nu}} {r_arrow}{tau}{sup +}{tau}{sup {minus}} in the minimal supersymmetric standard model (MSSM) without R parity. We introduce CP-violating and CP-conserving {tau}-spin asymmetries which are generated at {ital tree level } if there is {tilde {nu}}-{anti {tilde {nu}}} mixing and are forbidden in the standard model. At the CERN e{sup +}e{sup {minus}} collider LEP2, these asymmetries may reach {approximately}75{percent} around resonance for sneutrino mass splitting of {Delta}m{approximately}{Gamma}{sub {tilde {nu}}{sub {mu}}} and {approximately}10{percent} for splitting as low as {Delta}m{approximately}0.1{Gamma}{sub {tilde {nu}}{sub {mu}}} . They may be easily detectable if the beam energy is within {approximately}10 GeV around the {tilde {nu}}{sub {mu}} mass and may therefore serve as powerful probes of sneutrino mixing. Future colliders are also discussed. {copyright} {ital 1998} {ital The American Physical Society}

Authors:
;  [1];  [2]
  1. Physics Department, University of California, Riverside, California 92521 (United States)
  2. Physics Department, Brookhaven National Laboratory, Upton, New York 11973 (United States)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
OSTI Identifier:
664861
DOE Contract Number:  
AC02-76CH00016; FG03-94ER40837
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 80; Journal Issue: 21; Other Information: PBD: May 1998
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; P INVARIANCE; CP INVARIANCE; SPIN; LEPTON-LEPTON INTERACTIONS; NEUTRINOS; TAU PARTICLES; SPARTICLES; MIXING; SUPERSYMMETRY; STANDARD MODEL; SYMMETRY BREAKING; HIGGS BOSONS; LEPTON NUMBER

Citation Formats

Bar-Shalom, S, Eilam, G, and Soni, A. R-Parity Violation and CP-Violating and CP-Conserving Spin Asymmetries in scr(l){sup +}scr(l){sup {minus}} {r_arrow} {tilde {nu}} {r_arrow} {tau}{sup +}{tau}{sup {minus}} : Probing Sneutrino Mixing at scr(l){sup +}scr(l){sup {minus}} Colliders. United States: N. p., 1998. Web. doi:10.1103/PhysRevLett.80.4629.
Bar-Shalom, S, Eilam, G, & Soni, A. R-Parity Violation and CP-Violating and CP-Conserving Spin Asymmetries in scr(l){sup +}scr(l){sup {minus}} {r_arrow} {tilde {nu}} {r_arrow} {tau}{sup +}{tau}{sup {minus}} : Probing Sneutrino Mixing at scr(l){sup +}scr(l){sup {minus}} Colliders. United States. https://doi.org/10.1103/PhysRevLett.80.4629
Bar-Shalom, S, Eilam, G, and Soni, A. Fri . "R-Parity Violation and CP-Violating and CP-Conserving Spin Asymmetries in scr(l){sup +}scr(l){sup {minus}} {r_arrow} {tilde {nu}} {r_arrow} {tau}{sup +}{tau}{sup {minus}} : Probing Sneutrino Mixing at scr(l){sup +}scr(l){sup {minus}} Colliders". United States. https://doi.org/10.1103/PhysRevLett.80.4629.
@article{osti_664861,
title = {R-Parity Violation and CP-Violating and CP-Conserving Spin Asymmetries in scr(l){sup +}scr(l){sup {minus}} {r_arrow} {tilde {nu}} {r_arrow} {tau}{sup +}{tau}{sup {minus}} : Probing Sneutrino Mixing at scr(l){sup +}scr(l){sup {minus}} Colliders},
author = {Bar-Shalom, S and Eilam, G and Soni, A},
abstractNote = {We consider the sneutrino resonance reaction {ell}{sup +}{ell}{sup {minus}}{r_arrow}{tilde {nu}} {r_arrow}{tau}{sup +}{tau}{sup {minus}} in the minimal supersymmetric standard model (MSSM) without R parity. We introduce CP-violating and CP-conserving {tau}-spin asymmetries which are generated at {ital tree level } if there is {tilde {nu}}-{anti {tilde {nu}}} mixing and are forbidden in the standard model. At the CERN e{sup +}e{sup {minus}} collider LEP2, these asymmetries may reach {approximately}75{percent} around resonance for sneutrino mass splitting of {Delta}m{approximately}{Gamma}{sub {tilde {nu}}{sub {mu}}} and {approximately}10{percent} for splitting as low as {Delta}m{approximately}0.1{Gamma}{sub {tilde {nu}}{sub {mu}}} . They may be easily detectable if the beam energy is within {approximately}10 GeV around the {tilde {nu}}{sub {mu}} mass and may therefore serve as powerful probes of sneutrino mixing. Future colliders are also discussed. {copyright} {ital 1998} {ital The American Physical Society}},
doi = {10.1103/PhysRevLett.80.4629},
url = {https://www.osti.gov/biblio/664861}, journal = {Physical Review Letters},
number = 21,
volume = 80,
place = {United States},
year = {1998},
month = {5}
}