Observation of B(s)(0) → D(s)(*-) π+ and B(s)(0) → D(s)(*-) ρ+ and measurement of the B(s)(0) → D(s)(*-) ρ+ longitudinal polarization fraction.
First observations of the B(s)(0) → D(s)(*-) π+, B(s)(0) → D(s)(-) ρ+ and B(s)(0) → D(s)(*-) ρ+ decays are reported together with measurements of their branching fractions: B(B(s)(0) → D(s)(*-) π+) = [2.4(-0.4)(+0.5)(stat) ± 0.3(syst) ± 0.4(f(s))]×10(-3), B(B(s)(0) → D(s)(-) ρ+) = [8.5(-1.2)(+1.3)(stat) ± 1.1(syst) ± 1.3(f(s))]×10(-3) and B(B(s)(0) → D(s)(*-) ρ+) = [11.9(-2.0)(+2.2)(stat) ± 1.7(syst) ± 1.8(f(s))]×10(-3) (f(s) = N(B(s)(*) B(s)(*))/N(bb)). From helicity-angle distributions, we measured the longitudinal polarization fraction in B(s)(0) → D(s)(*-) ρ+ decays to be f(L)(B(s)(0) → D(s)(*-) ρ+) = 1.05(-0.10)(+0.08)(stat)(-0.04)(+0.03)(syst). These results are based on a 23.6  fb(-1) data sample collected at the Υ(5S) resonance with the Belle detector at the KEKB e+ e- collider.
Louvot
R
R
Ecole Polytechnique Fédérale de Lausanne, Lausanne.
Schneider
O
O
Aushev
T
T
Arinstein
K
K
Bakich
A M
AM
Balagura
V
V
Barberio
E
E
Bay
A
A
Belous
K
K
Bischofberger
M
M
Bondar
A
A
Bozek
A
A
Bracko
M
M
Browder
T E
TE
Chang
P
P
Chao
Y
Y
Chen
A
A
Chen
K-F
KF
Chen
P
P
Cheon
B G
BG
Chiang
C-C
CC
Cho
I-S
IS
Choi
Y
Y
Danilov
M
M
Dash
M
M
Drutskoy
A
A
Eidelman
S
S
Goldenzweig
P
P
Golob
B
B
Ha
H
H
Haba
J
J
Hara
T
T
Horii
Y
Y
Hoshi
Y
Y
Hou
W-S
WS
Hsiung
Y B
YB
Hyun
H J
HJ
Iijima
T
T
Inami
K
K
Itoh
R
R
Iwabuchi
M
M
Iwasaki
M
M
Iwasaki
Y
Y
Joshi
N J
NJ
Kah
D H
DH
Kang
J H
JH
Kapusta
P
P
Katayama
N
N
Kawasaki
T
T
Kiesling
C
C
Kim
H J
HJ
Kim
H O
HO
Kim
J H
JH
Kim
M J
MJ
Kim
Y J
YJ
Kinoshita
K
K
Ko
B R
BR
Kodys
P
P
Korpar
S
S
Krizan
P
P
Krokovny
P
P
Kumita
T
T
Kwon
Y-J
YJ
Kyeong
S-H
SH
Lange
J S
JS
Lee
M J
MJ
Lee
S-H
SH
Li
J
J
Liu
C
C
Matyja
A
A
McOnie
S
S
Miyabayashi
K
K
Miyata
H
H
Miyazaki
Y
Y
Mohanty
G B
GB
Nakao
M
M
Nakazawa
H
H
Nishida
S
S
Nishimura
K
K
Nitoh
O
O
Ohshima
T
T
Okuno
S
S
Olsen
S L
SL
Pakhlov
P
P
Pakhlova
G
G
Palka
H
H
Park
H
H
Park
H K
HK
Pestotnik
R
R
Petric
M
M
Piilonen
L E
LE
Poluektov
A
A
Prim
M
M
Röhrken
M
M
Ryu
S
S
Sahoo
H
H
Sakai
Y
Y
Schwanda
C
C
Schwartz
A J
AJ
Senyo
K
K
Sevior
M E
ME
Shapkin
M
M
Shebalin
V
V
Shen
C P
CP
Shiu
J-G
JG
Singh
J B
JB
Smerkol
P
P
Sokolov
A
A
Stanic
S
S
Staric
M
M
Sumiyoshi
T
T
Taylor
G N
GN
Teramoto
Y
Y
Trabelsi
K
K
Uehara
S
S
Unno
Y
Y
Uno
S
S
Varner
G
G
Varvell
K E
KE
Vervink
K
K
Wang
C H
CH
Wang
M-Z
MZ
Wang
P
P
Wicht
J
J
Won
E
E
Yabsley
B D
BD
Yamashita
Y
Y
Zhang
Z P
ZP
Zivko
T
T
Zyukova
O
O
D004601:Elementary Particles; D011789:Quantum Theory