Differential branching fraction and angular analysis of the decay B0 → K*0 μ+ μ-.
The angular distributions and the partial branching fraction of the decay B0 → K*0 μ+ μ- are studied by using an integrated luminosity of 0.37  fb(-1) of data collected with the LHCb detector. The forward-backward asymmetry of the muons, A(FB), the fraction of longitudinal polarization, F(L), and the partial branching fraction dB/dq2 are determined as a function of the dimuon invariant mass. The measurements are in good agreement with the standard model predictions and are the most precise to date. In the dimuon invariant mass squared range 1.00-6.00  GeV2/c4, the results are A(FB)=-0.06(-0.14)(+0.13)±0.04, F(L)=0.55±0.10±0.03, and dB/dq2=(0.42±0.06±0.03)×10(-7)  c4/GeV2. In each case, the first error is statistical and the second systematic.
Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands.
R
R
Aaij
C
C
Abellan Beteta
B
B
Adeva
M
M
Adinolfi
C
C
Adrover
A
A
Affolder
Z
Z
Ajaltouni
J
J
Albrecht
F
F
Alessio
M
M
Alexander
G
G
Alkhazov
P
P
Alvarez Cartelle
A A
AA
Alves
S
S
Amato
Y
Y
Amhis
J
J
Anderson
R B
RB
Appleby
O
O
Aquines Gutierrez
F
F
Archilli
L
L
Arrabito
A
A
Artamonov
M
M
Artuso
E
E
Aslanides
G
G
Auriemma
S
S
Bachmann
J J
JJ
Back
D S
DS
Bailey
V
V
Balagura
W
W
Baldini
R J
RJ
Barlow
C
C
Barschel
S
S
Barsuk
W
W
Barter
A
A
Bates
C
C
Bauer
Th
T
Bauer
A
A
Bay
I
I
Bediaga
S
S
Belogurov
K
K
Belous
I
I
Belyaev
E
E
Ben-Haim
M
M
Benayoun
G
G
Bencivenni
S
S
Benson
J
J
Benton
R
R
Bernet
M-O
MO
Bettler
M
M
van Beuzekom
A
A
Bien
S
S
Bifani
T
T
Bird
A
A
Bizzeti
P M
PM
Bjørnstad
T
T
Blake
F
F
Blanc
C
C
Blanks
J
J
Blouw
S
S
Blusk
A
A
Bobrov
V
V
Bocci
A
A
Bondar
N
N
Bondar
W
W
Bonivento
S
S
Borghi
A
A
Borgia
T J V
TJ
Bowcock
C
C
Bozzi
T
T
Brambach
J
J
van den Brand
J
J
Bressieux
D
D
Brett
M
M
Britsch
T
T
Britton
N H
NH
Brook
H
H
Brown
A
A
Büchler-Germann
I
I
Burducea
A
A
Bursche
J
J
Buytaert
S
S
Cadeddu
O
O
Callot
M
M
Calvi
M
M
Calvo Gomez
A
A
Camboni
P
P
Campana
A
A
Carbone
G
G
Carboni
R
R
Cardinale
A
A
Cardini
L
L
Carson
K
K
Carvalho Akiba
G
G
Casse
M
M
Cattaneo
Ch
Ch
Cauet
M
M
Charles
Ph
P
Charpentier
N
N
Chiapolini
K
K
Ciba
X
X
Cid Vidal
G
G
Ciezarek
P E L
PE
Clarke
M
M
Clemencic
H V
HV
Cliff
J
J
Closier
C
C
Coca
V
V
Coco
J
J
Cogan
P
P
Collins
A
A
Comerma-Montells
F
F
Constantin
A
A
Contu
A
A
Cook
M
M
Coombes
G
G
Corti
G A
GA
Cowan
R
R
Currie
C
C
D'Ambrosio
P
P
David
P N Y
PN
David
I
I
De Bonis
S
S
De Capua
M
M
De Cian
F
F
De Lorenzi
J M
JM
De Miranda
L
L
De Paula
P
P
De Simone
D
D
Decamp
M
M
Deckenhoff
H
H
Degaudenzi
L
L
Del Buono
C
C
Deplano
D
D
Derkach
O
O
Deschamps
F
F
Dettori
J
J
Dickens
H
H
Dijkstra
P
P
Diniz Batista
F
F
Domingo Bonal
S
S
Donleavy
F
F
Dordei
A
A
Dosil Suárez
D
D
Dossett
A
A
Dovbnya
F
F
Dupertuis
R
R
Dzhelyadin
A
A
Dziurda
S
S
Easo
U
U
Egede
V
V
Egorychev
S
S
Eidelman
D
D
van Eijk
F
F
Eisele
S
S
Eisenhardt
R
R
Ekelhof
L
L
Eklund
Ch
Ch
Elsasser
D
D
Elsby
D
D
Esperante Pereira
L
L
Estève
A
A
Falabella
E
E
Fanchini
C
C
Färber
G
G
Fardell
C
C
Farinelli
S
S
Farry
V
V
Fave
V
V
Fernandez Albor
M
M
Ferro-Luzzi
S
S
Filippov
C
C
Fitzpatrick
M
M
Fontana
F
F
Fontanelli
R
R
Forty
M
M
Frank
C
C
Frei
M
M
Frosini
S
S
Furcas
A
A
Gallas Torreira
D
D
Galli
M
M
Gandelman
P
P
Gandini
Y
Y
Gao
J-C
JC
Garnier
J
J
Garofoli
J
J
Garra Tico
L
L
Garrido
D
D
Gascon
C
C
Gaspar
N
N
Gauvin
M
M
Gersabeck
T
T
Gershon
Ph
P
Ghez
V
V
Gibson
V V
VV
Gligorov
C
C
Göbel
D
D
Golubkov
A
A
Golutvin
A
A
Gomes
H
H
Gordon
M
M
Grabalosa Gándara
R
R
Graciani Diaz
L A
LA
Granado Cardoso
E
E
Graugés
G
G
Graziani
A
A
Grecu
E
E
Greening
S
S
Gregson
B
B
Gui
E
E
Gushchin
Yu
Y
Guz
T
T
Gys
G
G
Haefeli
C
C
Haen
S C
SC
Haines
T
T
Hampson
S
S
Hansmann-Menzemer
R
R
Harji
N
N
Harnew
J
J
Harrison
P F
PF
Harrison
T
T
Hartmann
J
J
He
V
V
Heijne
K
K
Hennessy
P
P
Henrard
J A
JA
Hernando Morata
E
E
van Herwijnen
E
E
Hicks
K
K
Holubyev
P
P
Hopchev
W
W
Hulsbergen
P
P
Hunt
T
T
Huse
R S
RS
Huston
D
D
Hutchcroft
D
D
Hynds
V
V
Iakovenko
P
P
Ilten
J
J
Imong
R
R
Jacobsson
A
A
Jaeger
M
M
Jahjah Hussein
E
E
Jans
F
F
Jansen
P
P
Jaton
B
B
Jean-Marie
F
F
Jing
M
M
John
D
D
Johnson
C R
CR
Jones
B
B
Jost
M
M
Kaballo
S
S
Kandybei
M
M
Karacson
T M
TM
Karbach
J
J
Keaveney
I R
IR
Kenyon
U
U
Kerzel
T
T
Ketel
A
A
Keune
B
B
Khanji
Y M
YM
Kim
M
M
Knecht
P
P
Koppenburg
A
A
Kozlinskiy
L
L
Kravchuk
K
K
Kreplin
M
M
Kreps
G
G
Krocker
P
P
Krokovny
F
F
Kruse
K
K
Kruzelecki
M
M
Kucharczyk
T
T
Kvaratskheliya
V N
VN
La Thi
D
D
Lacarrere
G
G
Lafferty
A
A
Lai
D
D
Lambert
R W
RW
Lambert
E
E
Lanciotti
G
G
Lanfranchi
C
C
Langenbruch
T
T
Latham
C
C
Lazzeroni
R
R
Le Gac
J
J
van Leerdam
J-P
JP
Lees
R
R
Lefèvre
A
A
Leflat
J
J
Lefrançois
O
O
Leroy
T
T
Lesiak
L
L
Li
L
L
Li Gioi
M
M
Lieng
M
M
Liles
R
R
Lindner
C
C
Linn
B
B
Liu
G
G
Liu
J
J
von Loeben
J H
JH
Lopes
E
E
Lopez Asamar
N
N
Lopez-March
H
H
Lu
J
J
Luisier
A
A
Mac Raighne
F
F
Machefert
I V
IV
Machikhiliyan
F
F
Maciuc
O
O
Maev
J
J
Magnin
S
S
Malde
R M D
RM
Mamunur
G
G
Manca
G
G
Mancinelli
N
N
Mangiafave
U
U
Marconi
R
R
Märki
J
J
Marks
G
G
Martellotti
A
A
Martens
L
L
Martin
A
A
Martín Sánchez
D
D
Martinez Santos
A
A
Massafferri
Z
Z
Mathe
C
C
Matteuzzi
M
M
Matveev
E
E
Maurice
B
B
Maynard
A
A
Mazurov
G
G
McGregor
R
R
McNulty
M
M
Meissner
M
M
Merk
J
J
Merkel
R
R
Messi
S
S
Miglioranzi
D A
DA
Milanes
M-N
MN
Minard
J
J
Molina Rodriguez
S
S
Monteil
D
D
Moran
P
P
Morawski
R
R
Mountain
I
I
Mous
F
F
Muheim
K
K
Müller
R
R
Muresan
B
B
Muryn
B
B
Muster
M
M
Musy
J
J
Mylroie-Smith
P
P
Naik
T
T
Nakada
R
R
Nandakumar
I
I
Nasteva
M
M
Nedos
M
M
Needham
N
N
Neufeld
C
C
Nguyen-Mau
M
M
Nicol
V
V
Niess
N
N
Nikitin
A
A
Nomerotski
A
A
Novoselov
A
A
Oblakowska-Mucha
V
V
Obraztsov
S
S
Oggero
S
S
Ogilvy
O
O
Okhrimenko
R
R
Oldeman
M
M
Orlandea
J M
JM
Otalora Goicochea
P
P
Owen
K
K
Pal
J
J
Palacios
A
A
Palano
M
M
Palutan
J
J
Panman
A
A
Papanestis
M
M
Pappagallo
C
C
Parkes
C J
CJ
Parkinson
G
G
Passaleva
G D
GD
Patel
M
M
Patel
S K
SK
Paterson
G N
GN
Patrick
C
C
Patrignani
C
C
Pavel-Nicorescu
A
A
Pazos Alvarez
A
A
Pellegrino
G
G
Penso
M
M
Pepe Altarelli
S
S
Perazzini
D L
DL
Perego
E
E
Perez Trigo
A
A
Pérez-Calero Yzquierdo
P
P
Perret
M
M
Perrin-Terrin
G
G
Pessina
A
A
Petrella
A
A
Petrolini
A
A
Phan
E
E
Picatoste Olloqui
B
B
Pie Valls
B
B
Pietrzyk
T
T
Pilař
D
D
Pinci
R
R
Plackett
S
S
Playfer
M
M
Plo Casasus
G
G
Polok
A
A
Poluektov
E
E
Polycarpo
D
D
Popov
B
B
Popovici
C
C
Potterat
A
A
Powell
J
J
Prisciandaro
V
V
Pugatch
A
A
Puig Navarro
W
W
Qian
J H
JH
Rademacker
B
B
Rakotomiaramanana
M S
MS
Rangel
I
I
Raniuk
G
G
Raven
S
S
Redford
M M
MM
Reid
A C
AC
dos Reis
S
S
Ricciardi
K
K
Rinnert
D A
DA
Roa Romero
P
P
Robbe
E
E
Rodrigues
F
F
Rodrigues
P
P
Rodriguez Perez
G J
GJ
Rogers
S
S
Roiser
V
V
Romanovsky
M
M
Rosello
J
J
Rouvinet
T
T
Ruf
H
H
Ruiz
G
G
Sabatino
J J
JJ
Saborido Silva
N
N
Sagidova
P
P
Sail
B
B
Saitta
C
C
Salzmann
M
M
Sannino
R
R
Santacesaria
C
C
Santamarina Rios
R
R
Santinelli
E
E
Santovetti
M
M
Sapunov
A
A
Sarti
C
C
Satriano
A
A
Satta
M
M
Savrie
D
D
Savrina
P
P
Schaack
M
M
Schiller
S
S
Schleich
M
M
Schlupp
M
M
Schmelling
B
B
Schmidt
O
O
Schneider
A
A
Schopper
M-H
MH
Schune
R
R
Schwemmer
B
B
Sciascia
A
A
Sciubba
M
M
Seco
A
A
Semennikov
K
K
Senderowska
I
I
Sepp
N
N
Serra
J
J
Serrano
P
P
Seyfert
M
M
Shapkin
I
I
Shapoval
P
P
Shatalov
Y
Y
Shcheglov
T
T
Shears
L
L
Shekhtman
O
O
Shevchenko
V
V
Shevchenko
R
R
Silva Coutinho
A
A
Shires
T
T
Skwarnicki
A C
AC
Smith
N A
NA
Smith
E
E
Smith
K
K
Sobczak
F J P
FJ
Soler
A
A
Solomin
F
F
Soomro
B
B
Souza De Paula
B
B
Spaan
A
A
Sparkes
P
P
Spradlin
F
F
Stagni
S
S
Stahl
O
O
Steinkamp
S
S
Stoica
S
S
Stone
B
B
Storaci
M
M
Straticiuc
U
U
Straumann
V K
VK
Subbiah
S
S
Swientek
M
M
Szczekowski
P
P
Szczypka
T
T
Szumlak
S
S
T'Jampens
E
E
Teodorescu
F
F
Teubert
C
C
Thomas
E
E
Thomas
J
J
van Tilburg
V
V
Tisserand
M
M
Tobin
S
S
Topp-Joergensen
N
N
Torr
E
E
Tournefier
M T
MT
Tran
A
A
Tsaregorodtsev
N
N
Tuning
M
M
Ubeda Garcia
A
A
Ukleja
P
P
Urquijo
U
U
Uwer
V
V
Vagnoni
G
G
Valenti
R
R
Vazquez Gomez
P
P
Vazquez Regueiro
S
S
Vecchi
J J
JJ
Velthuis
M
M
Veltri
B
B
Viaud
I
I
Videau
X
X
Vilasis-Cardona
J
J
Visniakov
A
A
Vollhardt
D
D
Volyanskyy
D
D
Voong
A
A
Vorobyev
H
H
Voss
S
S
Wandernoth
J
J
Wang
D R
DR
Ward
N K
NK
Watson
A D
AD
Webber
D
D
Websdale
M
M
Whitehead
D
D
Wiedner
L
L
Wiggers
G
G
Wilkinson
M P
MP
Williams
M
M
Williams
F F
FF
Wilson
J
J
Wishahi
M
M
Witek
W
W
Witzeling
S A
SA
Wotton
K
K
Wyllie
Y
Y
Xie
F
F
Xing
Z
Z
Xing
Z
Z
Yang
R
R
Young
O
O
Yushchenko
M
M
Zavertyaev
F
F
Zhang
L
L
Zhang
W C
WC
Zhang
Y
Y
Zhang
A
A
Zhelezov
L
L
Zhong
E
E
Zverev
A
A
Zvyagin