Time-dependent Dalitz plot measurement of CP parameters in B{sup 0}{yields}K{sub S}{sup 0}{pi}{sup +}{pi}{sup -} decays

Journal Article · Wed Apr 01 04:00:00 EDT 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.79.072004· OSTI ID:21308134

Dalseno, J; Adachi, I; Hazumi, M; Itoh, R; Iwasaki, Y; Katayama, N; Krokovny, P; Nakao, M; Nishida, S; Ozaki, H; Sakai, Y; Sumisawa, K; Tanaka, M; Trabelsi, K; Uehara, S; Uno, S ^[1]; Aihara, H; Iwasaki, M; Nakahama, Y ^[2]; Arinstein, K ^[3]

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1. High Energy Accelerator Research Organization (KEK), Tsukuba (Japan)
2. Department of Physics, University of Tokyo, Tokyo (Japan)
3. Budker Institute of Nuclear Physics, Novosibirsk (Russian Federation)

We present a time-dependent Dalitz plot measurement of CP violation parameters in B{sup 0}{yields}K{sub S}{sup 0}{pi}{sup +}{pi}{sup -} decays. These results are obtained from a large data sample that contains 657x10{sup 6} BB pairs collected at the {upsilon}(4S) resonance with the Belle detector at the KEKB asymmetric-energy e{sup +}e{sup -} collider. For the CP violation parameters, we obtain two consistent solutions that describe the data well. The first of these solutions may be preferred by external information from other measurements. There is no evidence for direct CP violation in B{sup 0}{yields}{rho}{sup 0}(770)K{sub S}{sup 0}, B{sup 0}{yields}f{sub 0}(980)K{sub S}{sup 0} and B{sup 0}{yields}K*{sup +}(892){pi}{sup -}, while measurements of mixing-induced CP violation in B{sup 0}{yields}{rho}{sup 0}(770)K{sub S}{sup 0} and B{sup 0}{yields}f{sub 0}(980)K{sub S}{sup 0} decays are consistent with that of b{yields}ccs decays. We also measured the phase difference between B{sup 0}{yields}K*{sup +}(892){pi}{sup -} and B{sup 0}{yields}K{sup -}(892){pi}{sup +}, which may be used to extract {phi}{sub 3}.

• OSTI ID: 21308134
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 7 Vol. 79; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
BOSONS
CP INVARIANCE
DALITZ PLOT
ELECTRON-POSITRON COLLISIONS
ELECTRONS
F0-980 MESONS
KAONS NEUTRAL SHORT-LIVED
MATHEMATICAL SOLUTIONS
MIXING
PARTICLE DECAY
PIONS MINUS
PIONS PLUS
POSITRONS
RESONANCE
RHO-770 MESONS
TIME DEPENDENCE
VECTOR MESONS