Constraints on rhobar, etabar from B to K*pi

[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.

[发布日期] 2008-01-14

[学科分类] 物理（综合）

[关键词] CABIBBO ANGLE;KOBAYASHI-MASKAWA MATRIX;B NEUTRAL MESONS;PARTICLE DECAY;PIONS NEUTRAL;PIONS MINUS;STRANGE MESONS;AMPLITUDES;DALITZ PLOT;KAONS PLUS Phenomenology-HEP;HEPTH