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

Journal Article · Tue Jun 01 00:00:00 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]

---

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, Vol. 81, Issue 11; Other Information: DOI: 10.1103/PhysRevD.81.111104; (c) 2010 The American Physical Society; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

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