Evidence for B{yields}K{eta}'{gamma} decays at Belle

Journal Article · Tue Jun 01 04:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.111104· OSTI ID:21407929

Wedd, R; Barberio, E; Limosani, A; Sevior, M E; Taylor, G N; Urquijo, P ^[1]; Adachi, I; Dalseno, J; Itoh, R; Katayama, N; Krokovny, P; Nakao, M; Nishida, S; Ozaki, H; Sakai, Y; Schuemann, J; Sumisawa, K; Trabelsi, K; Uehara, S; Uno, S ^[2]

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1. University of Melbourne, School of Physics, Victoria 3010 (Australia)
2. High Energy Accelerator Research Organization (KEK), Tsukuba (Japan)

We present the results of a search for the radiative decay B{yields}K{eta}{sup '{gamma}} and find evidence for B{sup +{yields}}K{sup +{eta}'{gamma}} decays at the 3.3 standard deviation level with a partial branching fraction of (3.6{+-}1.2{+-}0.4)x10{sup -6}, where the first error is statistical and the second systematic. This measurement is restricted to the region of combined K{eta}{sup '} invariant mass less than 3.4 GeV/c{sup 2}. A 90% confidence level upper limit of 6.4x10{sup -6} is obtained for the partial branching fraction of the decay B{sup 0{yields}}K{sup 0{eta}'{gamma}} in the same K{eta}{sup '} invariant mass region. These results are obtained from a 605 fb{sup -1} data sample containing 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.

• OSTI ID: 21407929
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 11 Vol. 81; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
ASYMMETRY
B MESONS
B NEUTRAL MESONS
B PLUS MESONS
BEAUTY MESONS
BEAUTY PARTICLES
BOSONS
BRANCHING RATIO
COLLISIONS
DECAY
DIMENSIONLESS NUMBERS
ELECTRON COLLISIONS
ELECTRON-POSITRON COLLISIONS
ELEMENTARY PARTICLES
ENERGY RANGE
ETA MESONS
GAMMA DECAY
GEV RANGE
GEV RANGE 01-10
HADRONS
KAONS
KAONS NEUTRAL
KAONS PLUS
KEK LINAC
LINEAR ACCELERATORS
MASS
MESONS
NUCLEAR DECAY
PARTICLE DECAY
POSITRON COLLISIONS
PSEUDOSCALAR MESONS
RADIATIVE DECAY
RESONANCE
STRANGE MESONS
STRANGE PARTICLES
VECTOR MESONS