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Pion leptonic decays and supersymmetry

Ramsey-Musolf, Michael J. and Su, Shufang and Tulin, Sean (2007) Pion leptonic decays and supersymmetry. Physical Review D, 76 (9). Art. No. 095017. ISSN 2470-0010. doi:10.1103/PhysRevD.76.095017.

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We compute supersymmetric contributions to pion leptonic (pil2) decays in the minimal supersymmetric standard model (MSSM). When R-parity is conserved, the largest contributions to the ratio Re/µ[equivalent]Gamma[pi+-->e+nue(gamma)]/Gamma[pi+-->µ+nuµ(gamma)] arise from one-loop (V-A)[direct-product](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 Re/µ while remaining consistent with all other precision observables.

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Ramsey-Musolf, Michael J.0000-0001-8110-2479
Additional Information:©2007 The American Physical Society. (Received 23 July 2007; published 29 November 2007) We would like to thank M. Wise for useful discussions. M.R.M. and S.T. are supported under U.S Department of Energy Contract No. DE-FG02-05ER41361 and NSF No. PHY-0555674. S.S. is supported under U.S. Department of Energy Contract No. DE-FG02-04ER-41298.
Issue or Number:9
Record Number:CaltechAUTHORS:RAMprd07
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:9243
Deposited By: Archive Administrator
Deposited On:29 Nov 2007
Last Modified:08 Nov 2021 20:57

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