Observation of Radiative [Formula presented] Decays

A Drutskoy; K Abe; K Abe; T Abe; H Aihara; M Akatsu; Y Asano; V Aulchenko; T Aushev; AM Bakich; Y Ban; A Bay; I Bedny; PK Behera; I Bizjak; A Bondar; A Bozek; M Bračko; TE Browder; BCK Casey; Y Chao; BG Cheon; R Chistov; Y Choi; A Chuvikov; M Danilov; M Dash; LY Dong; S Eidelman; V Eiges; N Gabyshev; A Garmash; T Gershon; B Golob; J Haba; C Hagner; F Handa; NC Hastings; H Hayashii; M Hazumi; L Hinz; T Hokuue; Y Hoshi; WS Hou; HC Huang; Y Igarashi; T Iijima; K Inami; A Ishikawa; R Itoh; H Iwasaki; M Iwasaki; Y Iwasaki; HK Jang; JH Kang; JS Kang; P Kapusta; N Katayama; T Kawasaki; H Kichimi; DW Kim; HJ Kim; H Kim; JH Kim; SK Kim; K Kinoshita; P Koppenburg; S Korpar; P Križan; P Krokovny; YJ Kwon; SH Lee; T Lesiak; J Li; J MacNaughton; D Marlow; T Matsumoto; A Matyja; W Mitaroff; H Miyata; D Mohapatra; GR Moloney; T Mori; T Nagamine; Y Nagasaka; T Nakadaira; E Nakano; M Nakao; JW Nam; Z Natkaniec; S Nishida; O Nitoh; S Ogawa; T Ohshima; S Okuno; SL Olsen; W Ostrowicz; H Ozaki; P Pakhlov; H Palka

Journal article

Observation of Radiative [Formula presented] Decays

A Drutskoy, K Abe, K Abe, T Abe, H Aihara, M Akatsu, Y Asano, V Aulchenko, T Aushev, AM Bakich, Y Ban, A Bay, I Bedny, PK Behera, I Bizjak, A Bondar, A Bozek, M Bračko, TE Browder, BCK Casey Show all

Physical Review Letters | AMERICAN PHYSICAL SOC | Published : 2004

DOI: 10.1103/PhysRevLett.92.051801

Abstract

The radiative decay [Formula presented] is observed for the first time. The branching fraction for the charged [Formula presented] decay mode is measured to be [Formula presented]. The photon energy distribution for the [Formula presented] decay is presented. The signal for the neutral [Formula presented] decay mode is not statistically significant and an upper limit, [Formula presented] at 90% C.L., is set. The analysis is based on a data set of [Formula presented] collected by the Belle experiment at the [Formula presented] asymmetric collider KEKB. © 2004 The American Physical Society.