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Title: Flavor changing top decay t{r_arrow}c{tilde {nu}} or {tilde {nu}}{r_arrow}t{bar c} in the MSSM without {ital R} parity

Abstract

Widths for the new flavor-changing top quark decay t{r_arrow}c{tilde {nu}} or for the reversed sneutrino decay {tilde {nu}}{r_arrow}t{bar c} are calculated in the minimal supersymmetric standard model without {ital R}-parity conservation. For large tan&hthinsp;{beta}, e.g., tan&hthinsp;{beta}{approximately}m{sub t}&hthinsp;/m{sub b}{approximately}40, Br(t{r_arrow}c{tilde {nu}}){gt}10{sup {minus}5} or Br({tilde {nu}}{r_arrow}t{bar c}){gt}10{sup {minus}6} in a relatively wide range of the supersymmetric parameter space as long as there is more than one nonzero {ital R}-parity violating coupling. In the best cases, with a typical squark mass around 100 GeV, we find that Br(t{r_arrow}c{tilde {nu}}){approximately}10{sup {minus}4}{minus}10{sup {minus}3} or Br({tilde {nu}}{r_arrow}t{bar c}){approximately}10{sup {minus}5}{minus}10{sup {minus}4}. For tan&hthinsp;{beta}{approximately}O(1) the corresponding branching ratios for both top or sneutrino decays are too small to be measured at the CERN Large Hadron Collider (LHC). Therefore, the decays t{r_arrow}c{tilde {nu}} or {tilde {nu}}{r_arrow}t{bar c} appear to be sensitive to tan&hthinsp;{beta} and may be detected at the LHC. The branching ratios of the corresponding decays to an up quark instead of a charm quark, e.g., t{r_arrow}u{tilde {nu}} or {tilde {nu}}{r_arrow}t{bar u}, may also be similar. {copyright} {ital 1999} {ital The American Physical Society}

Authors:
 [1];  [2];  [3]
  1. Physics Department, University of California, Riverside, California 92521 (United States)
  2. Physics Department, Technion-Institute of Technology, Haifa 32000 (Israel)
  3. Physics Department, Brookhaven National Laboratory, Upton, New York 11973 (United States)
Publication Date:
OSTI Identifier:
357945
Resource Type:
Journal Article
Journal Name:
Physical Review, D
Additional Journal Information:
Journal Volume: 60; Journal Issue: 3; Other Information: PBD: Aug 1999
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; CONSERVATION LAWS; PARTICLE DECAY; SPARTICLES; FLAVOR MODEL; T QUARKS; C QUARKS; PARITY; SUPERSYMMETRY; STANDARD MODEL; MASS; BRANCHING RATIO

Citation Formats

Bar-Shalom, S, Eilam, G, and Soni, A. Flavor changing top decay t{r_arrow}c{tilde {nu}} or {tilde {nu}}{r_arrow}t{bar c} in the MSSM without {ital R} parity. United States: N. p., 1999. Web. doi:10.1103/PhysRevD.60.035007.
Bar-Shalom, S, Eilam, G, & Soni, A. Flavor changing top decay t{r_arrow}c{tilde {nu}} or {tilde {nu}}{r_arrow}t{bar c} in the MSSM without {ital R} parity. United States. https://doi.org/10.1103/PhysRevD.60.035007
Bar-Shalom, S, Eilam, G, and Soni, A. Sun . "Flavor changing top decay t{r_arrow}c{tilde {nu}} or {tilde {nu}}{r_arrow}t{bar c} in the MSSM without {ital R} parity". United States. https://doi.org/10.1103/PhysRevD.60.035007.
@article{osti_357945,
title = {Flavor changing top decay t{r_arrow}c{tilde {nu}} or {tilde {nu}}{r_arrow}t{bar c} in the MSSM without {ital R} parity},
author = {Bar-Shalom, S and Eilam, G and Soni, A},
abstractNote = {Widths for the new flavor-changing top quark decay t{r_arrow}c{tilde {nu}} or for the reversed sneutrino decay {tilde {nu}}{r_arrow}t{bar c} are calculated in the minimal supersymmetric standard model without {ital R}-parity conservation. For large tan&hthinsp;{beta}, e.g., tan&hthinsp;{beta}{approximately}m{sub t}&hthinsp;/m{sub b}{approximately}40, Br(t{r_arrow}c{tilde {nu}}){gt}10{sup {minus}5} or Br({tilde {nu}}{r_arrow}t{bar c}){gt}10{sup {minus}6} in a relatively wide range of the supersymmetric parameter space as long as there is more than one nonzero {ital R}-parity violating coupling. In the best cases, with a typical squark mass around 100 GeV, we find that Br(t{r_arrow}c{tilde {nu}}){approximately}10{sup {minus}4}{minus}10{sup {minus}3} or Br({tilde {nu}}{r_arrow}t{bar c}){approximately}10{sup {minus}5}{minus}10{sup {minus}4}. For tan&hthinsp;{beta}{approximately}O(1) the corresponding branching ratios for both top or sneutrino decays are too small to be measured at the CERN Large Hadron Collider (LHC). Therefore, the decays t{r_arrow}c{tilde {nu}} or {tilde {nu}}{r_arrow}t{bar c} appear to be sensitive to tan&hthinsp;{beta} and may be detected at the LHC. The branching ratios of the corresponding decays to an up quark instead of a charm quark, e.g., t{r_arrow}u{tilde {nu}} or {tilde {nu}}{r_arrow}t{bar u}, may also be similar. {copyright} {ital 1999} {ital The American Physical Society}},
doi = {10.1103/PhysRevD.60.035007},
url = {https://www.osti.gov/biblio/357945}, journal = {Physical Review, D},
number = 3,
volume = 60,
place = {United States},
year = {1999},
month = {8}
}