Constraints on rhobar, etabar from B to K*pi

Gronau, Michael ; Pirjol, Dan ; Soni, Amarjit ; Zupan, Jure

Stanford Linear Accelerator Center

关键词: Particle Decay;    Phenomenology-Hep,Hepth;    Amplitudes;    Kaons Plus Phenomenology-Hep,Hepth;    Pions Neutral;   

DOI  :  10.2172/922206
RP-ID  :  SLAC-PUB-13022
RP-ID  :  AC02-76SF00515
RP-ID  :  922206

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来源: UNT Digital Library

【 摘 要 】

A linear CKM relation, {bar {eta}} = tan {Phi}{sub 3/2}({bar p} - 0.24 {+-} 0.03), involving a 1{sigma} range for {Phi}{sub 3/2}, 20{sup o} < {Phi}{sub 3/2} < 115{sup o}, is obtained from B{sup 0} {yields} K*{pi} amplitudes measured recently in Dalitz plot analyses of B{sup 0} {yields} K{sup +}{pi}{sup -}{pi}{sup 0} and B{sup 0}(t) {yields} K{sub S}{pi}{sup +}{pi}{sup -}. This relation is consistent within the large error on {Phi}{sub 3/2} with other CKM constraints which are unaffected by new b {yields} s{bar q}q operators. Sensitivity of the method to a new physics contribution in the {Delta}S = {Delta}I = 1 amplitude is discussed.