Pion leptonic decays and supersymmetry

Journal Article · Thu Nov 01 04:00:00 EDT 2007 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.76.095017· OSTI ID:21032612

Ramsey-Musolf, Michael J ^[1]; Shufang, Su ^[2]; Tulin, Sean ^[1]

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1. California Institute of Technology, Pasadena, California 91125 (United States)
2. Department of Physics, University of Arizona, Tucson, Arizona 85721 (United States)

We compute supersymmetric contributions to pion leptonic ({pi}{sub l2}) decays in the minimal supersymmetric standard model (MSSM). When R-parity is conserved, the largest contributions to the ratio R{sub e/{mu}}{identical_to}{gamma}[{pi}{sup +}{yields}e{sup +}{nu}{sub e}({gamma})]/{gamma}[{pi}{sup +}{yields}{mu}{sup +}{nu}{sub {mu}}({gamma})] arise from one-loop (V-A) x (V-A) corrections. These contributions can be potentially as large as the sensitivities of upcoming experiments; if measured, they would imply significant bounds on the chargino and slepton sectors complementary to current collider limits. We also analyze R-parity-violating interactions, which may produce a detectable deviation in R{sub e/{mu}} while remaining consistent with all other precision observables.

• OSTI ID: 21032612
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 9 Vol. 76; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCURACY
CORRECTIONS
ELECTRON NEUTRINOS
LEPTONIC DECAY
MUON NEUTRINOS
MUONS
PARITY
PIONS PLUS
SENSITIVITY
SPARTICLES
STANDARD MODEL
SUPERSYMMETRY