SU(3) and CP violating weak and strong final state phases for B_{d}^{0} and B_{s}^{0} decays
High Energy Physics - Phenomenology
2007-05-23 v2
Abstract
Using rotation in SU(3) space, a set of relations between various decay modes of B_{d} and B_{s} are derived. The decays bar{B}_{d}^{0}-> K^{*-}pi ^{+}(rho ^{+}K^{-}), bar{B}_{s}^{0}-> K^{*-}K^{+} are expressed in terms of decay parameters of bar{B}_{d}^{0}->rho ^{-}pi ^{+}(rho ^{+}\pi ^{-}). In particular the parameters r_{-+}(r_{+-}) of B_{d}->rho \pi decays are obtained in terms of experimentally known decay rates R_{-+}(R_{+-})=frac{1}{2}left(Gamma_{rho ^{+}pi ^{-}(rho ^{-}pi ^{+})}+\ar{\amma}_{\ho ^{-}pi ^{+}(rho ^{+}pi ^{-})}), R−+prime(R+−prime)=frac12left(GammaK∗+pi−(rho−K+)+barGammaK∗−π+(rho+K−)),knownparametersbarlambda,fK∗/frho(fK/fpi)andtwoparametersB−+=fracR−+left∣T−+right∣2,B+−=fracR+−∣T+−∣2whicharedeterminedbyusingfactorizationfortreeamplitudesT−+andT+−.Wefindr−+=0.21pm0.04,r+−=0.25pm0.06.Withthesevaluesthefollowingboundsonleft(z≡cosγcosδ,x=sinγsinδ)arederived:[−0.34(−0.33)≤z−+(z+−)≤0.28(0.27)]and[0.16(0.43)≤x−+(x+−)≤0.58(1.00)]From(x,z)plotweobtainfollowingboundsonweakphasegammaandstrongphasesδprimesz−+>0,gammageq70circ,10circleqδ−+≤40circ,z−+<0,gammageq65∘, (180−δ−+). For δ+− we get $25^{\circ}leq \delta_{+-}\leq 90^{circ} or (180-delta_{+-}).
Cite
@article{arxiv.hep-ph/0607310,
title = {SU(3) and CP violating weak and strong final state phases for B_{d}^{0} and B_{s}^{0} decays},
author = {Fayyazuddin},
journal= {arXiv preprint arXiv:hep-ph/0607310},
year = {2007}
}
Comments
17 pages, 2 figures; Abstract and results are modified