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Measurement of the CKM angle γ using B± → DK± with D → K0Sπ+π−, K0SK+K− decays

  • Published:2018-08 Issue:8 Volume:2018 Page:
  • ISSN:1029-8479
  • Container-title:Journal of High Energy Physics
  • language:en
  • Short-container-title:J. High Energ. Phys.

Author:

,Aaij R.,Adeva B.,Adinolfi M.,Aidala C. A.,Ajaltouni Z.,Akar S.,Albicocco P.,Albrecht J.,Alessio F.,Alexander M.,Alfonso Albero A.,Ali S.,Alkhazov G.,Alvarez Cartelle P.,Alves A. A.,Amato S.,Amerio S.,Amhis Y.,An L.,Anderlini L.,Andreassi G.,Andreotti M.,Andrews J. E.,Appleby R. B.,Archilli F.,d’Argent P.,Arnau Romeu J.,Artamonov A.,Artuso M.,Arzymatov K.,Aslanides E.,Atzeni M.,Bachmann S.,Back J. J.,Baker S.,Balagura V.,Baldini W.,Baranov A.,Barlow R. J.,Barsuk S.,Barter W.,Baryshnikov F.,Batozskaya V.,Batsukh B.,Battista V.,Bay A.,Beddow J.,Bedeschi F.,Bediaga I.,Beiter A.,Bel L. J.,Beliy N.,Bellee V.,Belloli N.,Belous K.,Belyaev I.,Ben-Haim E.,Bencivenni G.,Benson S.,Beranek S.,Berezhnoy A.,Bernet R.,Berninghoff D.,Bertholet E.,Bertolin A.,Betancourt C.,Betti F.,Bettler M. O.,van Beuzekom M.,Bezshyiko Ia.,Bhasin S.,Bhom J.,Bifani S.,Billoir P.,Birnkraut A.,Bizzeti A.,Bjørn M.ORCID,Blago M. P.,Blake T.,Blanc F.,Blusk S.,Bobulska D.,Bocci V.,Boente Garcia O.,Boettcher T.,Bondar A.,Bondar N.,Borghi S.,Borisyak M.,Borsato M.,Bossu F.,Boubdir M.,Bowcock T. J. V.,Bozzi C.,Braun S.,Brodski M.,Brodzicka J.,Brundu D.,Buchanan E.,Buonaura A.,Burr C.,Bursche A.,Buytaert J.,Byczynski W.,Cadeddu S.,Cai H.,Calabrese R.,Calladine R.,Calvi M.,Calvo Gomez M.,Camboni A.,Campana P.,Campora Perez D. H.,Capriotti L.,Carbone A.,Carboni G.,Cardinale R.,Cardini A.,Carniti P.,Carson L.,Carvalho Akiba K.,Casse G.,Cassina L.,Cattaneo M.,Cavallero G.,Cenci R.,Chamont D.,Chapman M. G.,Charles M.,Charpentier Ph.,Chatzikonstantinidis G.,Chefdeville M.,Chekalina V.,Chen C.,Chen S.,Chitic S.-G.,Chobanova V.,Chrzaszcz M.,Chubykin A.,Ciambrone P.,Cid Vidal X.,Ciezarek G.,Clarke P. E. L.,Clemencic M.,Cliff H. V.,Closier J.,Coco V.,Cogan J.,Cogneras E.,Cojocariu L.,Collins P.,Colombo T.,Comerma-Montells A.,Contu A.,Coombs G.,Coquereau S.,Corti G.,Corvo M.,Costa Sobral C. M.,Couturier B.,Cowan G. A.,Craik D. C.,Crocombe A.,Cruz Torres M.,Currie R.,D’Ambrosio C.,Da Cunha Marinho F.,Da Silva C. L.,Dall’Occo E.,Dalseno J.,Danilina A.,Davis A.,De Aguiar Francisco O.,De Bruyn K.,De Capua S.,De Cian M.,De Miranda J. M.,De Paula L.,De Serio M.,De Simone P.,Dean C. T.,Decamp D.,Del Buono L.,Delaney B.,Dembinski H.-P.,Demmer M.,Dendek A.,Derkach D.,Deschamps O.,Desse F.,Dettori F.,Dey B.,Di Canto A.,Di Nezza P.,Didenko S.,Dijkstra H.,Dordei F.,Dorigo M.,Dosil Suárez A.,Douglas L.,Dovbnya A.,Dreimanis K.,Dufour L.,Dujany G.,Durante P.,Durham J. M.,Dutta D.,Dzhelyadin R.,Dziewiecki M.,Dziurda A.,Dzyuba A.,Easo S.,Egede U.,Egorychev V.,Eidelman S.,Eisenhardt S.,Eitschberger U.,Ekelhof R.,Eklund L.,Ely S.,Ene A.,Escher S.,Esen S.,Evans T.,Falabella A.,Farley N.,Farry S.,Fazzini D.,Federici L.,Fernandez G.,Fernandez Declara P.,Fernandez Prieto A.,Ferrari F.,Ferreira Lopes L.,Ferreira Rodrigues F.,Ferro-Luzzi M.,Filippov S.,Fini R. A.,Fiorini M.,Firlej M.,Fitzpatrick C.,Fiutowski T.,Fleuret F.,Fontana M.,Fontanelli F.,Forty R.,Franco Lima V.,Frank M.,Frei C.,Fu J.,Funk W.,Färber C.,Féo Pereira Rivello Carvalho M.,Gabriel E.,Gallas Torreira A.,Galli D.,Gallorini S.,Gambetta S.,Gandelman M.,Gandini P.,Gao Y.,Garcia Martin L. M.,Garcia Plana B.,García Pardiñas J.,Garra Tico J.,Garrido L.,Gascon D.,Gaspar C.,Gavardi L.,Gazzoni G.,Gerick D.,Gersabeck E.,Gersabeck M.,Gershon T.,Gerstel D.,Ghez Ph.,Gianì S.,Gibson V.,Girard O. G.,Giubega L.,Gizdov K.,Gligorov V. V.,Golubkov D.,Golutvin A.,Gomes A.,Gorelov I. V.,Gotti C.,Govorkova E.,Grabowski J. P.,Graciani Diaz R.,Granado Cardoso L. A.,Graugés E.,Graverini E.,Graziani G.,Grecu A.,Greim R.,Griffith P.,Grillo L.,Gruber L.,Gruberg Cazon B. R.,Grünberg O.,Gu C.,Gushchin E.,Guz Yu.,Gys T.,Göbel C.,Hadavizadeh T.,Hadjivasiliou C.,Haefeli G.,Haen C.,Haines S. C.,Hamilton B.,Han X.,Hancock T. H.,Hansmann-Menzemer S.,Harnew N.,Harnew S. T.,Harrison T.,Hasse C.,Hatch M.,He J.,Hecker M.,Heinicke K.,Heister A.,Hennessy K.,Henry L.,van Herwijnen E.,Heß M.,Hicheur A.,Hill D.,Hilton M.,Hopchev P. H.,Hu W.,Huang W.,Huard Z. C.,Hulsbergen W.,Humair T.,Hushchyn M.,Hutchcroft D.,Hynds D.,Ibis P.,Idzik M.,Ilten P.,Ivshin K.,Jacobsson R.,Jalocha J.,Jans E.,Jawahery A.,Jiang F.,John M.,Johnson D.,Jones C. R.,Joram C.,Jost B.,Jurik N.,Kandybei S.,Karacson M.,Kariuki J. M.,Karodia S.,Kazeev N.,Kecke M.,Keizer F.,Kelsey M.,Kenzie M.,Ketel T.,Khairullin E.,Khanji B.,Khurewathanakul C.,Kim K. E.,Kirn T.,Klaver S.,Klimaszewski K.,Klimkovich T.,Koliiev S.,Kolpin M.,Kopecna R.,Koppenburg P.,Kostiuk I.,Kotriakhova S.,Kozeiha M.,Kravchuk L.,Kreps M.,Kress F.,Krokovny P.,Krupa W.,Krzemien W.,Kucewicz W.,Kucharczyk M.,Kudryavtsev V.,Kuonen A. 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V.,Meadows B.,Meaux C.,Meier F.,Meinert N.,Melnychuk D.,Merk M.,Merli A.,Michielin E.,Milanes D. A.,Millard E.,Minard M.-N.,Minzoni L.,Mitzel D. S.,Mogini A.,Molina Rodriguez J.,Mombächer T.,Monroy I. A.,Monteil S.,Morandin M.,Morello G.,Morello M. J.,Morgunova O.,Moron J.,Morris A. B.,Mountain R.,Muheim F.,Mulder M.,Murphy C. H.,Murray D.,Müller D.,Müller J.,Müller K.,Müller V.,Naik P.,Nakada T.,Nandakumar R.,Nandi A.,Nanut T.,Nasteva I.,Needham M.,Neri N.,Neubert S.,Neufeld N.,Neuner M.,Nguyen T. D.,Nguyen-Mau C.,Nieswand S.,Niet R.,Nikitin N.,Nogay A.,O’Hanlon D. P.,Oblakowska-Mucha A.,Obraztsov V.,Ogilvy S.,Oldeman R.,Onderwater C. J. G.,Ossowska A.,Otalora Goicochea J. M.,Owen P.,Oyanguren A.,Pais P. R.,Palano A.,Palutan M.,Panshin G.,Papanestis A.,Pappagallo M.,Pappalardo L. L.,Parker W.,Parkes C.,Passaleva G.,Pastore A.,Patel M.,Patrignani C.,Pearce A.,Pellegrino A.,Penso G.,Pepe Altarelli M.,Perazzini S.,Pereima D.,Perret P.,Pescatore L.,Petridis K.,Petrolini A.,Petrov A.,Petrucci S.,Petruzzo M.,Pietrzyk B.,Pietrzyk G.,Pikies M.,Pili M.,Pinci D.,Pinzino J.,Pisani F.,Piucci A.,Placinta V.,Playfer S.,Plews J.,Plo Casasus M.,Polci F.,Poli Lener M.,Poluektov A.,Polukhina N.,Polyakov I.,Polycarpo E.,Pomery G. J.,Ponce S.,Popov A.,Popov D.,Poslavskii S.,Potterat C.,Price E.,Prisciandaro J.,Prouve C.,Pugatch V.,Puig Navarro A.,Pullen H.,Punzi G.,Qian W.,Qin J.,Quagliani R.,Quintana B.,Rachwal B.,Rademacker J. H.,Rama M.,Ramos Pernas M.,Rangel M. S.,Ratnikov F.,Raven G.,Ravonel Salzgeber M.,Reboud M.,Redi F.,Reichert S.,dos Reis A. C.,Reiss F.,Remon Alepuz C.,Ren Z.,Renaudin V.,Ricciardi S.,Richards S.,Rinnert K.,Robbe P.,Robert A.,Rodrigues A. B.,Rodrigues E.,Rodriguez Lopez J. A.,Roehrken M.,Rogozhnikov A.,Roiser S.,Rollings A.,Romanovskiy V.,Romero Vidal A.,Rotondo M.,Rudolph M. S.,Ruf T.,Ruiz Vidal J.,Saborido Silva J. J.,Sagidova N.,Saitta B.,Salustino Guimaraes V.,Sanchez Gras C.,Sanchez Mayordomo C.,Sanmartin Sedes B.,Santacesaria R.,Santamarina Rios C.,Santimaria M.,Santovetti E.,Sarpis G.,Sarti A.,Satriano C.,Satta A.,Saur M.,Savrina D.,Schael S.,Schellenberg M.,Schiller M.,Schindler H.,Schmelling M.,Schmelzer T.,Schmidt B.,Schneider O.,Schopper A.,Schreiner H. F.,Schubiger M.,Schune M. H.,Schwemmer R.,Sciascia B.,Sciubba A.,Semennikov A.,Sepulveda E. S.,Sergi A.,Serra N.,Serrano J.,Sestini L.,Seyfert P.,Shapkin M.,Shcheglov Y.,Shears T.,Shekhtman L.,Shevchenko V.,Shmanin E.,Siddi B. G.,Silva Coutinho R.,Silva de Oliveira L.,Simi G.,Simone S.,Skidmore N.,Skwarnicki T.,Smeaton J. G.,Smith E.,Smith I. T.,Smith M.,Soares M.,Soares Lavra l.,Sokoloff M. D.,Soler F. J. P.,Souza De Paula B.,Spaan B.,Spradlin P.,Stagni F.,Stahl M.,Stahl S.,Stefko P.,Stefkova S.,Steinkamp O.,Stemmle S.,Stenyakin O.,Stepanova M.,Stevens H.,Stone S.,Storaci B.,Stracka S.,Stramaglia M. E.,Straticiuc M.,Straumann U.,Strokov S.,Sun J.,Sun L.,Swientek K.,Syropoulos V.,Szumlak T.,Szymanski M.,T’Jampens S.,Tang Z.,Tayduganov A.,Tekampe T.,Tellarini G.,Teubert F.,Thomas E.,van Tilburg J.,Tilley M. J.,Tisserand V.,Tolk S.,Tomassetti L.,Tonelli D.,Tou D. Y.,Tourinho Jadallah Aoude R.,Tournefier E.,Traill M.,Tran M. T.,Trisovic A.,Tsaregorodtsev A.,Tully A.,Tuning N.,Ukleja A.,Usachov A.,Ustyuzhanin A.,Uwer U.,Vacca C.,Vagner A.,Vagnoni V.,Valassi A.,Valat S.,Valenti G.,Vazquez Gomez R.,Vazquez Regueiro P.,Vecchi S.,van Veghel M.,Velthuis J. J.,Veltri M.,Veneziano G.,Venkateswaran A.,Verlage T. A.,Vernet M.,Vesterinen M.,Viana Barbosa J. V.,Vieira D.,Vieites Diaz M.,Viemann H.,Vilasis-Cardona X.,Vitkovskiy A.,Vitti M.,Volkov V.,Vollhardt A.,Voneki B.,Vorobyev A.,Vorobyev V.,de Vries J. A.,Vázquez Sierra C.,Waldi R.,Walsh J.,Wang J.,Wang M.,Wang Y.,Wang Z.,Ward D. R.,Wark H. M.,Watson N. K.,Websdale D.,Weiden A.,Weisser C.,Whitehead M.,Wicht J.,Wilkinson G.,Wilkinson M.,Williams I.,Williams M. R. J.,Williams M.,Williams T.,Wilson F. F.,Wimberley J.,Winn M.,Wishahi J.,Wislicki W.,Witek M.,Wormser G.,Wotton S. A.,Wyllie K.,Xiao D.,Xie Y.,Xu A.,Xu M.,Xu Q.,Xu Z.,Xu Z.,Yang Z.,Yang Z.,Yao Y.,Yeomans L. E.,Yin H.,Yu J.,Yuan X.,Yushchenko O.,Zarebski K. A.,Zavertyaev M.,Zhang D.,Zhang L.,Zhang W. C.,Zhang Y.,Zhelezov A.,Zheng Y.,Zhu X.,Zhukov V.,Zonneveld J. B.,Zucchelli S.

Abstract

Abstract A binned Dalitz plot analysis of B ± → DK ± decays, with D → K S 0 π + π − and D → K S 0 K + K −, is used to perform a measurement of the CP-violating observables x ± and y ±, which are sensitive to the Cabibbo-Kobayashi-Maskawa angle γ. The analysis is performed without assuming any D decay model, through the use of information on the strong-phase variation over the Dalitz plot from the CLEO collaboration. Using a sample of proton-proton collision data collected with the LHCb experiment in 2015 and 2016, and corresponding to an integrated luminosity of 2.0 fb−1, the values of the CP violation parameters are found to be x − = (9.0 ± 1.7 ± 0.7 ± 0.4) × 10−2, y − = (2.1 ± 2.2 ± 0.5 ± 1.1) × 10−2, x + = (−7.7 ± 1.9 ± 0.7 ± 0.4) × 10−2, and y + = (−1.0 ± 1.9 ± 0.4 ± 0.9) × 10−2. The first uncertainty is statistical, the second is systematic, and the third is due to the uncertainty (on the strong-phase measurements. These values are used to obtain γ = (87 − 12 + 11 )∘, r B  = 0.086 − 0.014 + 0.013 , and δ B = (101±11)°, where r B is the ratio between the suppressed and favoured B-decay amplitudes and δ B is the corresponding strong-interaction phase difference. This measurement is combined with the result obtained using 2011 and 2012 data collected with the LHCb experiment, to give γ = (80 − 9 + 10 )∘, r B = 0.080 ± 0.011, and δ B = (110 ± 10)°.

Publisher

Springer Science and Business Media LLC

Subject

Nuclear and High Energy Physics
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