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 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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 Keizer,M Kelsey,M Kenzie,T Ketel, B Khanji, A Kharisova, C Khurewathanakul,K E Kim,T Kirn,V S Kirsebom,S Klaver,K Klimaszewski,S Koliiev, M Kolpin,A Kondybayeva, A Konoplyannikov,R Kopecna,P Koppenburg,I Kostiuk,O Kot,S Kotriakhova, M Kozeiha, L Kravchuk, M Kreps, F Kress, S Kretzschmar,P Krokovny,W Krupa,W Krzemien,W Kucewicz, M Kucharczyk,V Kudryavtsev, G J Kunde,A K Kuonen, T Kvaratskheliya, D Lacarrere, G Lafferty,A Lai, D Lancierini, G Lanfranchi, C Langenbruch,T Latham,C Lazzeroni,R Le Gac,R Lefèvre, A Leflat,F Lemaitre,O Leroy,T Lesiak, B Leverington,H Li,P-R Li,X Li,Y Li,Z Li,X Liang,T Likhomanenko, R Lindner, F Lionetto,V Lisovskyi,G Liu,X Liu,D Loh,A Loi,J Lomba Castro, I Longstaff,J H Lopes,G Loustau, G H Lovell,D Lucchesi,M Lucio Martinez,Y Luo,A Lupato,E Luppi, O Lupton,A Lusiani,X Lyu, F Machefert, F Maciuc,V Macko,P Mackowiak,S 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PHYSICAL REVIEW LETTERS（2019）
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摘要
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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