Measurement of B-->K{*}(892)gamma branching fractions and CP and Isospin asymmetries.

نویسندگان

  • B Aubert
  • Y Karyotakis
  • J P Lees
  • V Poireau
  • E Prencipe
  • X Prudent
  • V Tisserand
  • J Garra Tico
  • E Grauges
  • M Martinelli
  • A Palano
  • M Pappagallo
  • G Eigen
  • B Stugu
  • L Sun
  • M Battaglia
  • D N Brown
  • L T Kerth
  • Yu G Kolomensky
  • G Lynch
  • I L Osipenkov
  • K Tackmann
  • T Tanabe
  • C M Hawkes
  • N Soni
  • A T Watson
  • H Koch
  • T Schroeder
  • D J Asgeirsson
  • B G Fulsom
  • C Hearty
  • T S Mattison
  • J A McKenna
  • M Barrett
  • A Khan
  • A Randle-Conde
  • V E Blinov
  • A D Bukin
  • A R Buzykaev
  • V P Druzhinin
  • V B Golubev
  • A P Onuchin
  • S I Serednyakov
  • Yu I Skovpen
  • E P Solodov
  • K Yu Todyshev
  • M Bondioli
  • S Curry
  • I Eschrich
  • D Kirkby
  • A J Lankford
  • P Lund
  • M Mandelkern
  • E C Martin
  • D P Stoker
  • H Atmacan
  • J W Gary
  • F Liu
  • O Long
  • G M Vitug
  • Z Yasin
  • L Zhang
  • V Sharma
  • C Campagnari
  • T M Hong
  • D Kovalskyi
  • M A Mazur
  • J D Richman
  • T W Beck
  • A M Eisner
  • C A Heusch
  • J Kroseberg
  • W S Lockman
  • A J Martinez
  • T Schalk
  • B A Schumm
  • A Seiden
  • L Wang
  • L O Winstrom
  • C H Cheng
  • D A Doll
  • B Echenard
  • F Fang
  • D G Hitlin
  • I Narsky
  • T Piatenko
  • F C Porter
  • R Andreassen
  • G Mancinelli
  • B T Meadows
  • K Mishra
  • M D Sokoloff
  • P C Bloom
  • W T Ford
  • A Gaz
  • J F Hirschauer
  • M Nagel
  • U Nauenberg
  • J G Smith
  • S R Wagner
  • R Ayad
  • W H Toki
  • R J Wilson
  • E Feltresi
  • A Hauke
  • H Jasper
  • T M Karbach
  • J Merkel
  • A Petzold
  • B Spaan
  • K Wacker
  • M J Kobel
  • R Nogowski
  • K R Schubert
  • R Schwierz
  • A Volk
  • D Bernard
  • E Latour
  • M Verderi
  • P J Clark
  • S Playfer
  • J E Watson
  • M Andreotti
  • D Bettoni
  • C Bozzi
  • R Calabrese
  • A Cecchi
  • G Cibinetto
  • E Fioravanti
  • P Franchini
  • E Luppi
  • M Munerato
  • M Negrini
  • A Petrella
  • L Piemontese
  • V Santoro
  • R Baldini-Ferroli
  • A Calcaterra
  • R de Sangro
  • G Finocchiaro
  • S Pacetti
  • P Patteri
  • I M Peruzzi
  • M Piccolo
  • M Rama
  • A Zallo
  • R Contri
  • E Guido
  • M Lo Vetere
  • M R Monge
  • S Passaggio
  • C Patrignani
  • E Robutti
  • S Tosi
  • K S Chaisanguanthum
  • M Morii
  • A Adametz
  • J Marks
  • S Schenk
  • U Uwer
  • F U Bernlochner
  • V Klose
  • H M Lacker
  • D J Bard
  • P D Dauncey
  • M Tibbetts
  • P K Behera
  • M J Charles
  • U Mallik
  • J Cochran
  • H B Crawley
  • L Dong
  • V Eyges
  • W T Meyer
  • S Prell
  • E I Rosenberg
  • A E Rubin
  • Y Y Gao
  • A V Gritsan
  • Z J Guo
  • N Arnaud
  • J Béquilleux
  • A D'Orazio
  • M Davier
  • D Derkach
  • J Firmino da Costa
  • G Grosdidier
  • F Le Diberder
  • V Lepeltier
  • A M Lutz
  • B Malaescu
  • S Pruvot
  • P Roudeau
  • M H Schune
  • J Serrano
  • V Sordini
  • A Stocchi
  • G Wormser
  • D J Lange
  • D M Wright
  • I Bingham
  • J P Burke
  • C A Chavez
  • J R Fry
  • E Gabathuler
  • R Gamet
  • D E Hutchcroft
  • D J Payne
  • C Touramanis
  • A J Bevan
  • C K Clarke
  • F Di Lodovico
  • R Sacco
  • M Sigamani
  • G Cowan
  • S Paramesvaran
  • A C Wren
  • C L Davis
  • A G Denig
  • M Fritsch
  • W Gradl
  • A Hafner
  • K E Alwyn
  • D Bailey
  • R J Barlow
  • G Jackson
  • G D Lafferty
  • T J West
  • J I Yi
  • J Anderson
  • C Chen
  • A Jawahery
  • D A Roberts
  • G Simi
  • J M Tuggle
  • C Dallapiccola
  • E Salvati
  • S Saremi
  • R Cowan
  • D Dujmic
  • P H Fisher
  • S W Henderson
  • G Sciolla
  • M Spitznagel
  • R K Yamamoto
  • M Zhao
  • P M Patel
  • S H Robertson
  • M Schram
  • A Lazzaro
  • V Lombardo
  • F Palombo
  • S Stracka
  • J M Bauer
  • L Cremaldi
  • R Godang
  • R Kroeger
  • P Sonnek
  • D J Summers
  • H W Zhao
  • M Simard
  • P Taras
  • H Nicholson
  • G De Nardo
  • L Lista
  • D Monorchio
  • G Onorato
  • C Sciacca
  • G Raven
  • H L Snoek
  • C P Jessop
  • K J Knoepfel
  • J M Losecco
  • W F Wang
  • L A Corwin
  • K Honscheid
  • H Kagan
  • R Kass
  • J P Morris
  • A M Rahimi
  • J J Regensburger
  • S J Sekula
  • Q K Wong
  • N L Blount
  • J Brau
  • R Frey
  • O Igonkina
  • J A Kolb
  • M Lu
  • R Rahmat
  • N B Sinev
  • D Strom
  • J Strube
  • E Torrence
  • G Castelli
  • N Gagliardi
  • M Margoni
  • M Morandin
  • M Posocco
  • M Rotondo
  • F Simonetto
  • R Stroili
  • C Voci
  • P Del Amo Sanchez
  • E Ben-Haim
  • G R Bonneaud
  • H Briand
  • J Chauveau
  • O Hamon
  • Ph Leruste
  • G Marchiori
  • J Ocariz
  • A Perez
  • J Prendki
  • S Sitt
  • L Gladney
  • M Biasini
  • E Manoni
  • C Angelini
  • G Batignani
  • S Bettarini
  • G Calderini
  • M Carpinelli
  • A Cervelli
  • F Forti
  • M A Giorgi
  • A Lusiani
  • M Morganti
  • N Neri
  • E Paoloni
  • G Rizzo
  • J J Walsh
  • D Lopes Pegna
  • C Lu
  • J Olsen
  • A J S Smith
  • A V Telnov
  • F Anulli
  • E Baracchini
  • G Cavoto
  • R Faccini
  • F Ferrarotto
  • F Ferroni
  • M Gaspero
  • P D Jackson
  • L Li Gioi
  • M A Mazzoni
  • S Morganti
  • G Piredda
  • F Renga
  • C Voena
  • M Ebert
  • T Hartmann
  • H Schröder
  • R Waldi
  • T Adye
  • B Franek
  • E O Olaiya
  • F F Wilson
  • S Emery
  • L Esteve
  • G Hamel de Monchenault
  • W Kozanecki
  • G Vasseur
  • Ch Yèche
  • M Zito
  • M T Allen
  • D Aston
  • R Bartoldus
  • J F Benitez
  • R Cenci
  • J P Coleman
  • M R Convery
  • J C Dingfelder
  • J Dorfan
  • G P Dubois-Felsmann
  • W Dunwoodie
  • R C Field
  • M Franco Sevilla
  • A M Gabareen
  • M T Graham
  • P Grenier
  • C Hast
  • W R Innes
  • J Kaminski
  • M H Kelsey
  • H Kim
  • P Kim
  • M L Kocian
  • D W G S Leith
  • S Li
  • B Lindquist
  • S Luitz
  • V Luth
  • H L Lynch
  • D B Macfarlane
  • H Marsiske
  • R Messner
  • D R Muller
  • H Neal
  • S Nelson
  • C P O'Grady
  • I Ofte
  • M Perl
  • B N Ratcliff
  • A Roodman
  • A A Salnikov
  • R H Schindler
  • J Schwiening
  • A Snyder
  • D Su
  • M K Sullivan
  • K Suzuki
  • S K Swain
  • J M Thompson
  • J Va'vra
  • A P Wagner
  • M Weaver
  • C A West
  • W J Wisniewski
  • M Wittgen
  • D H Wright
  • H W Wulsin
  • A K Yarritu
  • C C Young
  • V Ziegler
  • X R Chen
  • H Liu
  • W Park
  • M V Purohit
  • R M White
  • J R Wilson
  • P R Burchat
  • A J Edwards
  • T S Miyashita
  • S Ahmed
  • M S Alam
  • J A Ernst
  • B Pan
  • M A Saeed
  • S B Zain
  • A Soffer
  • S M Spanier
  • B J Wogsland
  • R Eckmann
  • J L Ritchie
  • A M Ruland
  • C J Schilling
  • R F Schwitters
  • B C Wray
  • B W Drummond
  • J M Izen
  • X C Lou
  • F Bianchi
  • D Gamba
  • M Pelliccioni
  • M Bomben
  • L Bosisio
  • C Cartaro
  • G Della Ricca
  • L Lanceri
  • L Vitale
  • V Azzolini
  • N Lopez-March
  • F Martinez-Vidal
  • D A Milanes
  • A Oyanguren
  • J Albert
  • Sw Banerjee
  • B Bhuyan
  • H H F Choi
  • K Hamano
  • G J King
  • R Kowalewski
  • M J Lewczuk
  • I M Nugent
  • J M Roney
  • R J Sobie
  • T J Gershon
  • P F Harrison
  • J Ilic
  • T E Latham
  • G B Mohanty
  • E M T Puccio
  • H R Band
  • X Chen
  • S Dasu
  • K T Flood
  • Y Pan
  • R Prepost
  • C O Vuosalo
  • S L Wu
چکیده

We present an analysis of the decays B{0}-->K{*0}(892)gamma and B{+}-->K{*+}(892)gamma using a sample of about 383 x 10{6} BB[-over ] events collected with the BABAR detector at the PEP-II asymmetric energy B factory. We measure the branching fractions B(B{0}-->K{*0}gamma)=(4.47+/-0.10+/-0.16) x 10{-5} and B(B{+}-->K{*+}gamma)=(4.22+/-0.14+/-0.16) x 10{-5}. We constrain the direct CP asymmetry to be -0.033K{*}gamma)<0.028 and the isospin asymmetry to be 0.017<Delta{0-} < 0.116, where the limits are determined by the 90% confidence interval and include both the statistical and systematic uncertainties.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Branching fractions and direct CP asymmetries of charmless decay modes at the Tevatron

We present new CDF results on the branching fractions and time-integrated direct CP asymmetries for B and B s decay modes into pairs of charmless charged hadrons (pion or kaon). The data set for this update amounts to 1 fb of p̄p collisions at √ s = 1.96 TeV. We report the first observation of the B s → K π mode and a measurement of its branching fraction and direct CP asymmetry. We also observe...

متن کامل

Direct CP Violation and Isospin Triangles of B → ππ Decays

The recent observation of B d → ππ and B̄ d → ππ decay modes allows us to make a fresh isospin analysis of B → ππ transitions. We find that current experimental data can impose some model-independent constraints on the parameter space of direct CP violation in Bd → ππ and Bd → ππ. Furthermore, we establish a direct relationship between the weak phase α and the charge-averaged branching fractions...

متن کامل

Branching fractions and direct CP asymmetries of charmless B decay modes at the Tevatron

We present new CDF results on the branching fractions and time-integrated direct CP asymmetries for B and B s decay modes into pairs of charmless charged hadrons (pions or kaons). The data-set for this update amounts to 1 fb of p̄p collisions at a center of mass energy 1.96 TeV. We report the first observation of the B s → K π mode and a measurement of its branching fraction and direct CP asymme...

متن کامل

Exclusive radiative and electroweak b → d and b → s penguin decays at NLO

Exclusive radiative and electroweak b → d and b → s penguin decays at NLO Abstract We provide Standard Model expectations for the rare radiative decays B → K * γ, B → ργ and B → ωγ, and the electroweak penguin decays B → K * ℓ + ℓ − and B → ρ ℓ + ℓ − at the next-to-leading order (NLO), extending our previous results to b → d transitions. We consider branching fractions, isospin asymmetries and ...

متن کامل

Implication of the B → ( ρ , ω ) γ Branching Ratios for the CKM Phenomenology

We study the implication of the recent measurement by the BELLE collaboration of the averaged branching fraction B̄exp[B → (ρ, ω) γ] = (1.8 −0.5 ± 0.1)× 10 for the CKM phenomenology. Combined with the averaged branching fraction B̄exp(B → K γ) = (4.06±0.26)×10−5 measured earlier, this yields R̄exp[(ρ, ω) γ/Kγ] = (4.2±1.3)% for the ratio of the two branching fractions. Updating earlier theoretical ...

متن کامل

Model independent sum rules for B → πK decays

We provide a set of sum rules relating CP-averaged branching ratios and CP-asymmetries of the B → πK modes. They prove to be useful as a mechanism to ‘test’ experimental data given our expectations of the size of isospin breaking. A set of observables emerges providing a simpler interpretation of data in terms of isospin breaking. Moreover, the derivation is done in a completely model independe...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:
  • Physical review letters

دوره 103 21  شماره 

صفحات  -

تاریخ انتشار 2009