Implications of R parity violating Yukawa couplings in {delta}S=1 semileptonic decays of K mesons

Journal Article · Sat Dec 01 04:00:00 EST 2007 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.76.114005· OSTI ID:21023915

Mir, Azeem; Tahir, Farida; Haseeb, Mahnaz Q; Ahmed, Kamaluddin ^[1]

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1. Physics Department, COMSATS Institute of Information Technology, Islamabad (Pakistan)

We present a class of constraints on products and combinations of Yukawa couplings for R parity violating (Re{sub p}) and lepton flavor conserving as well as violating semileptonic decays of K mesons into light pseudoscalar mesons along with two charged leptons at 1{sigma} and 2{sigma} levels. We compare the constraints obtained by semileptonic rare decays with pure leptonic rare decays and find that most of these bounds are now improved over the existing ones. We also study the forward-backward asymmetry in the decays of K{sup +}{yields}{pi}{sup +}l{sup +}l{sup -} (l=e and {mu}) in the absence of tensor terms. The asymmetry is found to be up to O(10{sup -3}) (O(10{sup -1})) for the electron and muon modes, respectively. The asymmetry is found to be as large as O(10{sup -1}) in the case of K{sup +}{yields}{pi}{sup +}{mu}{sup +}{mu}{sup -}.

• OSTI ID: 21023915
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 11 Vol. 76; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
COMPARATIVE EVALUATIONS
COUPLING
ELECTRONS
FLAVOR MODEL
KAONS
KAONS PLUS
MUONS MINUS
MUONS PLUS
PARITY
PIONS PLUS
QUANTUM CHROMODYNAMICS
SEMILEPTONIC DECAY
TENSORS