Evidence for Large Direct CP Violation in B{sup {+-}}{yields}{rho}(770){sup 0}K{sup {+-}} from Analysis of Three-Body Charmless B{sup {+-}}{yields}K{sup {+-}}{pi}{sup {+-}}{pi}{sup {+-}} Decays

Journal Article · Fri Jun 30 00:00:00 EDT 2006 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.96.251803· OSTI ID:20775289

Garmash, A; Chuvikov, A; Marlow, D ^[1]; Abe, K; Adachi, I; Dragic, J; Gershon, T; Hazumi, M; Ishikawa, A; Itoh, R; Iwasaki, Y; Katayama, N; Kichimi, H; Limosani, A; Nakao, M; Nishida, S; Ozaki, H; Sakai, Y; Stamen, R; Suzuki, S Y ^[2]

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1. Princeton University, Princeton, New Jersey 08544 (United States)
2. High Energy Accelerator Research Organization (KEK), Tsukuba (Japan)

We report results on a Dalitz analysis of three-body charmless B{sup {+-}}{yields}K{sup {+-}}{pi}{sup {+-}}{pi}{sup {+-}} decay including searches for direct CP violation. We report the first observation of the decay B{sup {+-}}{yields}f{sub 2}(1270)K{sup {+-}} with a statistical significance above 6{sigma}. We also observe first evidence for large direct CP violation in the B{sup {+-}}{yields}{rho}(770){sup 0}K{sup {+-}} channel. The results are obtained with a data sample that contains 386x10{sup 6} BB pairs collected at the {upsilon}(4S) resonance with the Belle detector at the KEKB asymmetric-energy e{sup +}e{sup -} collider.

• OSTI ID: 20775289
• Journal Information: Physical Review Letters, Vol. 96, Issue 25; Other Information: DOI: 10.1103/PhysRevLett.96.251803; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
B NEUTRAL MESONS
CP INVARIANCE
F2-1270 MESONS
KAONS NEUTRAL
PARTICLE DECAY
PIONS NEUTRAL
RHO-770 MESONS
THREE-BODY PROBLEM