Measurement of CP-Violating and Mixing-Induced Observables in B_{s}^{0}→ϕγ Decays.
R Aaij,C Abellán Beteta,B Adeva,M Adinolfi,C A Aidala,Z Ajaltouni,S Akar,P Albicocco,J Albrecht,F Alessio,M Alexander,A Alfonso Albero,G Alkhazov,P Alvarez Cartelle,A A Alves,S Amato,Y Amhis,L An,L Anderlini,G Andreassi,M Andreotti,J E Andrews,F Archilli,J Arnau Romeu,A Artamonov,M Artuso,K Arzymatov,E Aslanides,M Atzeni,B Audurier,S Bachmann,J J Back,S Baker,V Balagura,W Baldini,A Baranov,R J Barlow,S Barsuk,W Barter,M Bartolini,F Baryshnikov,V Batozskaya,B Batsukh,A Battig,V Battista,A Bay,F Bedeschi,I Bediaga,A Beiter,L J Bel,V Belavin,S Belin,N Beliy,V Bellee,N Belloli,K Belous,I Belyaev,G Bencivenni,E Ben-Haim,S Benson,S Beranek,A Berezhnoy,R Bernet,D Berninghoff,E Bertholet,A Bertolin,C Betancourt,F Betti,M O Bettler,Ia Bezshyiko,S Bhasin,J Bhom,M S Bieker,S Bifani,P Billoir,A Birnkraut,A Bizzeti,M Bjørn,M P Blago,T Blake,F Blanc,S Blusk,D Bobulska,V Bocci,O Boente Garcia,T Boettcher,A Bondar,N Bondar,S Borghi,M Borisyak,M Borsato,M Boubdir,T J V Bowcock,C Bozzi,S Braun,A Brea Rodriguez,M Brodski,J Brodzicka,A Brossa Gonzalo,D Brundu,E Buchanan,A Buonaura,C Burr,A Bursche,J S Butter,J Buytaert,W Byczynski,S Cadeddu,H Cai,R Calabrese,S Cali,R Calladine,M Calvi,M Calvo Gomez,A Camboni,P Campana,D H Campora Perez,L Capriotti,A Carbone,G Carboni,R Cardinale, A Cardini,P Carniti,K Carvalho Akiba,A Casais Vidal,G Casse,M Cattaneo,G Cavallero,R Cenci,M G Chapman,M Charles,Ph Charpentier,G Chatzikonstantinidis,M Chefdeville, V Chekalina,C Chen,S Chen,S-G Chitic,V Chobanova,M Chrzaszcz,A Chubykin,P Ciambrone,X Cid Vidal,G Ciezarek,F Cindolo,P E L Clarke,M Clemencic,H V Cliff,J Closier,V Coco,J A B Coelho,J Cogan,E Cogneras,L Cojocariu,P Collins,T Colombo,A Comerma-Montells,A Contu,G Coombs,S Coquereau,G Corti,C M Costa Sobral,B Couturier,G A Cowan,D C Craik,A Crocombe,M Cruz Torres,R Currie,C L Da Silva,E Dall'Occo,J Dalseno,C D'Ambrosio,A Danilina,P d'Argent,A Davis,O De Aguiar Francisco,K De Bruyn,S De Capua,M De Cian,J M De Miranda,L De Paula,M De Serio,P De Simone,J A de Vries,C T Dean,W Dean,D Decamp,L Del Buono,B Delaney,H-P Dembinski,M Demmer,A Dendek,D Derkach,O Deschamps,F Desse,F Dettori,B Dey,A Di Canto,P Di Nezza,S Didenko,H Dijkstra,F Dordei,M Dorigo,A C Dos Reis,A Dosil Suárez,L Douglas,A Dovbnya,K Dreimanis,L Dufour,G Dujany,P Durante,J M Durham,D Dutta,R Dzhelyadin,M Dziewiecki,A Dziurda,A Dzyuba,S Easo,U Egede,V Egorychev,S Eidelman,S Eisenhardt,U Eitschberger,R Ekelhof,S Ek-In,L Eklund,S Ely,A Ene,S Escher,S Esen,T Evans,A Falabella,C Färber,N Farley,S Farry,D Fazzini,M Féo,P Fernandez Declara,A Fernandez Prieto,F Ferrari,L Ferreira Lopes,F Ferreira Rodrigues,S Ferreres Sole,M Ferro-Luzzi,S Filippov,R A Fini,M Fiorini,M Firlej,C Fitzpatrick,T Fiutowski,F Fleuret,M Fontana,F Fontanelli,R Forty,V Franco Lima,M Franco Sevilla,M Frank,C Frei,J Fu,W Funk,E Gabriel,A Gallas Torreira,D Galli,S Gallorini,S Gambetta,Y Gan,M Gandelman,P Gandini,Y Gao,L M Garcia Martin,J García Pardiñas,B Garcia Plana,J Garra Tico,L Garrido,D Gascon,C Gaspar,G Gazzoni,D Gerick,E Gersabeck,M Gersabeck,T Gershon,D Gerstel,Ph Ghez,V Gibson,O G Girard,P Gironella Gironell,L Giubega,K Gizdov,V V Gligorov,C Göbel,D Golubkov,A Golutvin,A Gomes,I V Gorelov,C Gotti,E Govorkova,J P Grabowski,R Graciani Diaz,L A Granado Cardoso,E Graugés,E Graverini,G Graziani,A Grecu,R Greim,P Griffith,L Grillo,L Gruber,B R Gruberg Cazon,C Gu,E Gushchin,A Guth,Yu Guz,T Gys,T Hadavizadeh,C Hadjivasiliou,G Haefeli,C Haen,S C Haines,B Hamilton,Q Han,X Han,T H Hancock,S Hansmann-Menzemer,N Harnew,T Harrison,C Hasse,M Hatch,J He,M Hecker,K Heinicke,A Heister,K Hennessy,L Henry,M Heß,J Heuel,A Hicheur,R Hidalgo Charman,D Hill,M Hilton,P H Hopchev,J Hu,W Hu,W Huang,Z C Huard,W Hulsbergen,T Humair,M Hushchyn,D Hutchcroft,D Hynds,P Ibis,M Idzik,P Ilten,A Inglessi,A Inyakin,K Ivshin,R Jacobsson,S Jakobsen,J Jalocha,E Jans,B K Jashal,A Jawahery,F Jiang,M John,D Johnson,C R Jones,C Joram,B Jost,N Jurik,S Kandybei,M Karacson,J M Kariuki,S Karodia,N Kazeev,M Kecke,F 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PHYSICAL REVIEW LETTERS（2019）
Cited 14|Views68
Abstract
A time-dependent analysis of the B-s(0) -> phi gamma decay rate is performed to determine the CP -violating observables S-phi gamma and C-phi gamma and the mixing-induced observable A(phi gamma)(Delta). The measurement is based on a sample of pp collision data recorded with the LHCb detector, corresponding to an integrated luminosity of 3 fb(-1) at center-of-mass energies of 7 and 8 TeV. The measured values are S-phi gamma = 0.43 +/- 0.30 +/- 0.11, C-phi gamma = 0.11 +/- 0.29 +/- 0.11, and A(phi gamma)(Delta) = -0.67(-0.41)(+0.37) +/- 0.17, where the first uncertainty is statistical and the second systematic. This is the first measurement of the observables S and C in radiative B-s(0) decays. The results are consistent with the standard model predictions.
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