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Observation of b--dgamma and determination of /Vtd/Vts

Authors :
D, Mohapatra
M, Nakao
S, Nishida
K, Abe
I, Adachi
H, Aihara
D, Anipko
K, Arinstein
Y, Asano
V, Aulchenko
T, Aushev
S, Bahinipati
A M, Bakich
V, Balagura
M, Barbero
I, Bedny
U, Bitenc
I, Bizjak
S, Blyth
A, Bondar
A, Bozek
M, Bracko
T E, Browder
Y, Chao
A, Chen
K-F, Chen
W T, Chen
B G, Cheon
R, Chistov
Y, Choi
A, Chuvikov
S, Cole
J, Dalseno
M, Danilov
M, Dash
J, Dragic
A, Drutskoy
S, Eidelman
D, Epifanov
S, Fratina
N, Gabyshev
T, Gershon
G, Gokhroo
B, Golob
A, Gorisek
H C, Ha
J, Haba
T, Hara
N C, Hastings
K, Hayasaka
H, Hayashii
M, Hazumi
L, Hinz
T, Hokuue
Y, Hoshi
S, Hou
W-S, Hou
Y B, Hsiung
T, Iijima
A, Imoto
K, Inami
A, Ishikawa
H, Ishino
R, Itoh
M, Iwasaki
Y, Iwasaki
J H, Kang
S U, Kataoka
N, Katayama
T, Kawasaki
H R, Khan
H, Kichimi
H J, Kim
H O, Kim
S M, Kim
K, Kinoshita
S, Korpar
P, Krizan
P, Krokovny
R, Kulasiri
R, Kumar
C C, Kuo
A, Kuzmin
Y-J, Kwon
J S, Lange
G, Leder
J, Lee
T, Lesiak
A, Limosani
S-W, Lin
D, Liventsev
G, Majumder
F, Mandl
D, Marlow
T, Matsumoto
A, Matyja
W, Mitaroff
K, Miyabayashi
H, Miyake
H, Miyata
Y, Miyazaki
R, Mizuk
G R, Moloney
T, Mori
E, Nakano
O, Nitoh
T, Nozaki
S, Ogawa
T, Ohshima
T, Okabe
S, Okuno
S L, Olsen
H, Ozaki
P, Pakhlov
H, Palka
C W, Park
N, Parslow
L S, Peak
R, Pestotnik
L E, Piilonen
A, Poluektov
F J, Ronga
M, Rozanska
Y, Sakai
T R, Sarangi
N, Sato
T, Schietinger
O, Schneider
J, Schümann
C, Schwanda
A J, Schwartz
R, Seidl
M E, Sevior
M, Shapkin
H, Shibuya
B, Shwartz
V, Sidorov
A, Sokolov
A, Somov
N, Soni
R, Stamen
S, Stanic
M, Staric
T, Sumiyoshi
S, Suzuki
O, Tajima
F, Takasaki
K, Tamai
N, Tamura
M, Tanaka
G N, Taylor
Y, Teramoto
X C, Tian
K, Trabelsi
T, Tsukamoto
S, Uehara
T, Uglov
K, Ueno
Y, Unno
S, Uno
P, Urquijo
Y, Usov
G, Varner
K E, Varvell
S, Villa
C C, Wang
C H, Wang
M-Z, Wang
Y, Watanabe
J, Wicht
E, Won
Q L, Xie
B D, Yabsley
A, Yamaguchi
Y, Yamashita
M, Yamauchi
J, Ying
Y, Yusa
L M, Zhang
Z P, Zhang
V, Zhilich
D, Zürcher
Source :
Physical review letters. 96(22)
Publication Year :
2006

Abstract

We report the observation of the flavor-changing neutral current process b--dgamma using a sample of 386 x 106 B meson pairs accumulated by the Belle detector at the KEKB e+e- collider. We measure branching fractions for the exclusive modes B---rho-gamma, B0rho0gamma, and B0omegagamma. Assuming that these three modes are related by isospin, we find B(B--(rho,gamma)gamma)=[Formula: See Text] with a significance of 5.1sigma. This result is used to determine the ratio of Cabibbo-Kobayashi-Maskawa matrix elements /Vtd/Vts/ to be [Formula: See Text].

Details

ISSN :
00319007
Volume :
96
Issue :
22
Database :
OpenAIRE
Journal :
Physical review letters
Accession number :
edsair.pmid..........9fe8091e5b0bb3624445da74dce0536d

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