Measurement of the CKM angle γ and $$ {B}_s^0\hbox{-} {\overline{B}}_s^0 $$ mixing frequency with $$ {B}_s^0\to {D}_s^{\mp }{h}^{\pm }{\pi}^{\pm }{\pi}^{\mp } $$ decays

Author:

Aaij R., ,Abellán Beteta C.,Ackernley T.,Adeva B.,Adinolfi M.,Afsharnia H.,Aidala C. A.,Aiola S.,Ajaltouni Z.,Akar S.,Albrecht J.,Alessio F.,Alexander M.,Alfonso Albero A.,Aliouche Z.,Alkhazov G.,Alvarez Cartelle P.,Amato S.,Amhis Y.,An L.,Anderlini L.,Andreianov A.,Andreotti M.,Archilli F.,Artamonov A.,Artuso M.,Arzymatov K.,Aslanides E.,Atzeni M.,Audurier B.,Bachmann S.,Bachmayer M.,Back J. J.,Baker S.,Baladron Rodriguez P.,Balagura V.,Baldini W.,Baptista Leite J.,Barlow R. J.,Barsuk S.,Barter W.,Bartolini M.,Baryshnikov F.,Basels J. M.,Bassi G.,Batsukh B.,Battig A.,Bay A.,Becker M.,Bedeschi F.,Bediaga I.,Beiter A.,Belavin V.,Belin S.,Bellee V.,Belous K.,Belov I.,Belyaev I.,Bencivenni G.,Ben-Haim E.,Berezhnoy A.,Bernet R.,Berninghoff D.,Bernstein H. C.,Bertella C.,Bertholet E.,Bertolin A.,Betancourt C.,Betti F.,Bettler M. O.,Bezshyiko Ia.,Bhasin S.,Bhom J.,Bian L.,Bieker M. S.,Bifani S.,Billoir P.,Birch M.,Bishop F. C. R.,Bizzeti A.,Bjørn M.,Blago M. P.,Blake T.,Blanc F.,Blusk S.,Bobulska D.,Boelhauve J. A.,Boente Garcia O.,Boettcher T.,Boldyrev A.,Bondar A.,Bondar N.,Borghi S.,Borisyak M.,Borsato M.,Borsuk J. T.,Bouchiba S. A.,Bowcock T. J. V.,Boyer A.,Bozzi C.,Bradley M. J.,Braun S.,Brea Rodriguez A.,Brodski M.,Brodzicka J.,Brossa Gonzalo A.,Brundu D.,Buonaura A.,Burr C.,Bursche A.,Butkevich A.,Butter J. S.,Buytaert J.,Byczynski W.,Cadeddu S.,Cai H.,Calabrese R.,Calefice L.,Calero Diaz L.,Cali S.,Calladine R.,Calvi M.,Calvo Gomez M.,Camargo Magalhaes P.,Camboni A.,Campana P.,Campora Perez D. H.,Campoverde Quezada A. F.,Capelli S.,Capriotti L.,Carbone A.,Carboni G.,Cardinale R.,Cardini A.,Carli I.,Carniti P.,Carus L.,Carvalho Akiba K.,Casais Vidal A.,Casse G.,Cattaneo M.,Cavallero G.,Celani S.,Cerasoli J.,Chadwick A. J.,Chapman M. G.,Charles M.,Charpentier Ph.,Chatzikonstantinidis G.,Chavez Barajas C. A.,Chefdeville M.,Chen C.,Chen S.,Chernov A.,Chitic S.-G.,Chobanova V.,Cholak S.,Chrzaszcz M.,Chubykin A.,Chulikov V.,Ciambrone P.,Cicala M. F.,Cid Vidal X.,Ciezarek G.,Clarke P. E. L.,Clemencic M.,Cliff H. V.,Closier J.,Cobbledick J. L.,Coco V.,Coelho J. A. B.,Cogan J.,Cogneras E.,Cojocariu L.,Collins P.,Colombo T.,Congedo L.,Contu A.,Cooke N.,Coombs G.,Corti G.,Costa Sobral C. M.,Couturier B.,Craik D. C.,Crkovská J.,Cruz Torres M.,Currie R.,Da Silva C. L.,Dall’Occo E.,Dalseno J.,D’Ambrosio C.,Danilina A.,d’Argent P.,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 D.,De Simone P.,de Vries J. A.,Dean C. T.,Dean W.,Decamp D.,Del Buono L.,Delaney B.,Dembinski H.-P.,Dendek A.,Denysenko V.,Derkach D.,Deschamps O.,Desse F.,Dettori F.,Dey B.,Di Nezza P.,Didenko S.,Dieste Maronas L.,Dijkstra H.,Dobishuk V.,Donohoe A. M.,Dordei F.,dos Reis A. C.,Douglas L.,Dovbnya A.,Downes A. G.,Dreimanis K.,Dudek M. W.,Dufour L.,Duk V.,Durante P.,Durham J. M.,Dutta D.,Dziewiecki M.,Dziurda A.,Dzyuba A.,Easo S.,Egede U.,Egorychev V.,Eidelman S.,Eisenhardt S.,Ek-In S.,Eklund L.,Ely S.,Ene A.,Epple E.,Escher S.,Eschle J.,Esen S.,Evans T.,Falabella A.,Fan J.,Fan Y.,Fang B.,Farley N.,Farry S.,Fazzini D.,Fedin P.,Féo M.,Fernandez Declara P.,Fernandez Prieto A.,Fernandez-tenllado Arribas J. M.,Ferrari F.,Ferreira Lopes L.,Ferreira Rodrigues F.,Ferreres Sole S.,Ferrillo M.,Ferro-Luzzi M.,Filippov S.,Fini R. A.,Fiorini M.,Firlej M.,Fischer K. M.,Fitzpatrick C.,Fiutowski T.,Fleuret F.,Fontana M.,Fontanelli F.,Forty R.,Franco Lima V.,Franco Sevilla M.,Frank M.,Franzoso E.,Frau G.,Frei C.,Friday D. A.,Fu J.,Fuehring Q.,Funk W.,Gabriel E.,Gaintseva T.,Gallas Torreira A.,Galli D.,Gambetta S.,Gan Y.,Gandelman M.,Gandini P.,Gao Y.,Garau M.,Garcia Martin L. M.,Garcia Moreno P.,García Pardiñas J.,Garcia Plana B.,Garcia Rosales F. A.,Garrido L.,Gaspar C.,Geertsema R. E.,Gerick D.,Gerken L. L.,Gersabeck E.,Gersabeck M.,Gershon T.,Gerstel D.,Ghez Ph.,Gibson V.,Giovannetti M.,Gioventù A.,Gironella Gironell P.,Giubega L.,Giugliano C.,Gizdov K.,Gkougkousis E. L.,Gligorov V. V.,Göbel C.,Golobardes E.,Golubkov D.,Golutvin A.,Gomes A.,Gomez Fernandez S.,Goncalves Abrantes F.,Goncerz M.,Gong G.,Gorbounov P.,Gorelov I. V.,Gotti C.,Govorkova E.,Grabowski J. P.,Graciani Diaz R.,Grammatico T.,Granado Cardoso L. A.,Graugés E.,Graverini E.,Graziani G.,Grecu A.,Greeven L. M.,Griffith P.,Grillo L.,Gromov S.,Gruberg Cazon B. R.,Gu C.,Guarise M.,Günther P. A.,Gushchin E.,Guth A.,Guz Y.,Gys T.,Hadavizadeh T.,Haefeli G.,Haen C.,Haimberger J.,Haines S. C.,Halewood-leagas T.,Hamilton P. M.,Han Q.,Han X.,Hancock T. H.,Hansmann-Menzemer S.,Harnew N.,Harrison T.,Hasse C.,Hatch M.,He J.,Hecker M.,Heijhoff K.,Heinicke K.,Hennequin A. M.,Hennessy K.,Henry L.,Heuel J.,Hicheur A.,Hill D.,Hilton M.,Hollitt S. E.,Hu J.,Hu J.,Hu W.,Huang W.,Huang X.,Hulsbergen W.,Hunter R. J.,Hushchyn M.,Hutchcroft D.,Hynds D.,Ibis P.,Idzik M.,Ilin D.,Ilten P.,Inglessi A.,Ishteev A.,Ivshin K.,Jacobsson R.,Jakobsen S.,Jans E.,Jashal B. K.,Jawahery A.,Jevtic V.,Jezabek M.,Jiang F.,John M.,Johnson D.,Jones C. R.,Jones T. P.,Jost B.,Jurik N.,Kandybei S.,Kang Y.,Karacson M.,Karpov M.,Kazeev N.,Kecke M.,Keizer F.,Kenzie M.,Ketel T.,Khanji B.,Kharisova A.,Kholodenko S.,Kim K. E.,Kirn T.,Kirsebom V. S.,Kitouni O.,Klaver S.,Klimaszewski K.,Koliiev S.,Kondybayeva A.,Konoplyannikov A.,Kopciewicz P.,Kopecna R.,Koppenburg P.,Korolev M.,Kostiuk I.,Kot O.,Kotriakhova S.,Kravchenko P.,Kravchuk L.,Krawczyk R. D.,Kreps M.,Kress F.,Kretzschmar S.,Krokovny P.,Krupa W.,Krzemien W.,Kucewicz W.,Kucharczyk M.,Kudryavtsev V.,Kuindersma H. S.,Kunde G. J.,Kvaratskheliya T.,Lacarrere D.,Lafferty G.,Lai A.,Lampis A.,Lancierini D.,Lane J. J.,Lane R.,Lanfranchi G.,Langenbruch C.,Langer J.,Lantwin O.,Latham T.,Lazzari F.,Le Gac R.,Lee S. H.,Lefèvre R.,Leflat A.,Legotin S.,Leroy O.,Lesiak T.,Leverington B.,Li H.,Li L.,Li P.,Li X.,Li Y.,Li Y.,Li Z.,Liang X.,Lin T.,Lindner R.,Lisovskyi V.,Litvinov R.,Liu G.,Liu H.,Liu S.,Liu X.,Loi A.,Lomba Castro J.,Longstaff I.,Lopes J. H.,Loustau G.,Lovell G. H.,Lu Y.,Lucchesi D.,Luchuk S.,Lucio Martinez M.,Lukashenko V.,Luo Y.,Lupato A.,Luppi E.,Lupton O.,Lusiani A.,Lyu X.,Ma L.,Maccolini S.,Machefert F.,Maciuc F.,Macko V.,Mackowiak P.,Maddrell-Mander S.,Madejczyk O.,Madhan Mohan L. R.,Maev O.,Maevskiy A.,Maisuzenko D.,Majewski M. W.,Malczewski J. J.,Malde S.,Malecki B.,Malinin A.,Maltsev T.,Malygina H.,Manca G.,Mancinelli G.,Manera Escalero R.,Manuzzi D.,Marangotto D.,Maratas J.,Marchand J. F.,Marconi U.,Mariani S.,Marin Benito C.,Marinangeli M.,Marino P.,Marks J.,Marshall P. J.,Martellotti G.,Martinazzoli L.,Martinelli M.,Martinez Santos D.,Martinez Vidal F.,Massafferri A.,Materok M.,Matev R.,Mathad A.,Mathe Z.,Matiunin V.,Matteuzzi C.,Mattioli K. R.,Mauri A.,Maurice E.,Mauricio J.,Mazurek M.,McCann M.,Mcconnell L.,Mcgrath T. H.,McNab A.,McNulty R.,Mead J. V.,Meadows B.,Meaux C.,Meier G.,Meinert N.,Melnychuk D.,Meloni S.,Merk M.,Merli A.,Meyer Garcia L.,Mikhasenko M.,Milanes D. A.,Millard E.,Milovanovic M.,Minard M.-N.,Minzoni L.,Mitchell S. E.,Mitreska B.,Mitzel D. S.,Mödden A.,Mohammed R. A.,Moise R. D.,Mombächer T.,Monroy I. A.,Monteil S.,Morandin M.,Morello G.,Morello M. J.,Moron J.,Morris A. B.,Morris A. G.,Mountain R.,Mu H.,Muheim F.,Mukherjee M.,Mulder M.,Müller D.,Müller K.,Murphy C. H.,Murray D.,Muzzetto P.,Naik P.,Nakada T.,Nandakumar R.,Nanut T.,Nasteva I.,Needham M.,Neri I.,Neri N.,Neubert S.,Neufeld N.,Newcombe R.,Nguyen T. D.,Nguyen-Mau C.,Niel E. M.,Nieswand S.,Nikitin N.,Nolte N. S.,Nunez C.,Oblakowska-Mucha A.,Obraztsov V.,O’Hanlon D. P.,Oldeman R.,Olivares M. E.,Onderwater C. J. G.,Ossowska A.,Otalora Goicochea J. M.,Ovsiannikova T.,Owen P.,Oyanguren A.,Pagare B.,Pais P. R.,Pajero T.,Palano A.,Palutan M.,Pan Y.,Panshin G.,Papanestis A.,Pappagallo M.,Pappalardo L. L.,Pappenheimer C.,Parker W.,Parkes C.,Parkinson C. J.,Passalacqua B.,Passaleva G.,Pastore A.,Patel M.,Patrignani C.,Pawley C. J.,Pearce A.,Pellegrino A.,Pepe Altarelli M.,Perazzini S.,Pereima D.,Perret P.,Petridis K.,Petrolini A.,Petrov A.,Petrucci S.,Petruzzo M.,Pham T. T. H.,Philippov A.,Pica L.,Piccini M.,Pietrzyk B.,Pietrzyk G.,Pili M.,Pinci D.,Pisani F.,Piucci A.,Resmi P. K,Placinta V.,Plews J.,Plo Casasus M.,Polci F.,Poli Lener M.,Poliakova M.,Poluektov A.,Polukhina N.,Polyakov I.,Polycarpo E.,Pomery G. J.,Ponce S.,Popov D.,Popov S.,Poslavskii S.,Prasanth K.,Promberger L.,Prouve C.,Pugatch V.,Pullen H.,Punzi G.,Qian W.,Qin J.,Quagliani R.,Quintana B.,Raab N. V.,Rabadan Trejo R. I.,Rachwal B.,Rademacker J. H.,Rama M.,Ramos Pernas M.,Rangel M. S.,Ratnikov F.,Raven G.,Reboud M.,Redi F.,Reiss F.,Remon Alepuz C.,Ren Z.,Renaudin V.,Ribatti R.,Ricciardi S.,Rinnert K.,Robbe P.,Robert A.,Robertson G.,Rodrigues A. B.,Rodrigues E.,Rodriguez Lopez J. A.,Rollings A.,Roloff P.,Romanovskiy V.,Romero Lamas M.,Romero Vidal A.,Roth J. D.,Rotondo M.,Rudolph M. S.,Ruf T.,Ruiz Vidal J.,Ryzhikov A.,Ryzka J.,Saborido Silva J. J.,Sagidova N.,Sahoo N.,Saitta B.,Sanchez Gonzalo D.,Sanchez Gras C.,Santacesaria R.,Santamarina Rios C.,Santimaria M.,Santovetti E.,Saranin D.,Sarpis G.,Sarpis M.,Sarti A.,Satriano C.,Satta A.,Saur M.,Savrina D.,Sazak H.,Scantlebury Smead L. G.,Schael S.,Schellenberg M.,Schiller M.,Schindler H.,Schmelling M.,Schmelzer T.,Schmidt B.,Schneider O.,Schopper A.,Schubiger M.,Schulte S.,Schune M. H.,Schwemmer R.,Sciascia B.,Sciubba A.,Sellam S.,Semennikov A.,Senghi Soares M.,Sergi A.,Serra N.,Sestini L.,Seuthe A.,Seyfert P.,Shangase D. M.,Shapkin M.,Shchemerov I.,Shchutska L.,Shears T.,Shekhtman L.,Shen Z.,Shevchenko V.,Shields E. B.,Shmanin E.,Shupperd J. D.,Siddi B. G.,Silva Coutinho R.,Simi G.,Simone S.,Skiba I.,Skidmore N.,Skwarnicki T.,Slater M. W.,Smallwood J. C.,Smeaton J. G.,Smetkina A.,Smith E.,Smith M.,Snoch A.,Soares M.,Soares Lavra L.,Sokoloff M. D.,Soler F. J. P.,Solovev A.,Solovyev I.,Souza De Almeida F. L.,Souza De Paula B.,Spaan B.,Spadaro Norella E.,Spradlin P.,Stagni F.,Stahl M.,Stahl S.,Stefko P.,Steinkamp O.,Stemmle S.,Stenyakin O.,Stevens H.,Stone S.,Stramaglia M. E.,Straticiuc M.,Strekalina D.,Strokov S.,Suljik F.,Sun J.,Sun L.,Sun Y.,Svihra P.,Swallow P. N.,Swientek K.,Szabelski A.,Szumlak T.,Szymanski M.,Taneja S.,Teubert F.,Thomas E.,Thomson K. A.,Tilley M. J.,Tisserand V.,T’Jampens S.,Tobin M.,Tolk S.,Tomassetti L.,Torres Machado D.,Tou D. Y.,Traill M.,Tran M. T.,Trifonova E.,Trippl C.,Tuci G.,Tully A.,Tuning N.,Ukleja A.,Unverzagt D. 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E.,Yin H.,Yu J.,Yuan X.,Yushchenko O.,Zaffaroni E.,Zarebski K. A.,Zavertyaev M.,Zdybal M.,Zenaiev O.,Zeng M.,Zhang D.,Zhang L.,Zhang S.,Zhang Y.,Zhang Y.,Zhelezov A.,Zheng Y.,Zhou X.,Zhou Y.,Zhu X.,Zhukov V.,Zonneveld J. B.,Zucchelli S.,Zuliani D.,Zunica G.

Abstract

Abstract The CKM angle γ is measured for the first time from mixing-induced CP violation between $$ {B}_s^0\to {D}_s^{\mp }{K}^{\pm }{\pi}^{\pm }{\pi}^{\mp } $$ B s 0 D s K ± π ± π and $$ {\overline{B}}_s^0\to {D}_s^{\pm }{K}^{\mp }{\pi}^{\mp }{\pi}^{\pm } $$ B ¯ s 0 D s ± K π π ± decays reconstructed in proton-proton collision data corresponding to an integrated luminosity of 9 fb1 recorded with the LHCb detector. A time-dependent amplitude analysis is performed to extract the CP-violating weak phase γ − 2βs and, subsequently, γ by taking the $$ {B}_s^0\hbox{-} {\overline{B}}_s^0 $$ B s 0 B ¯ s 0 mixing phase βs as an external input. The measurement yields γ = (44 ± 12)° modulo 180°, where statistical and systematic uncertainties are combined. An alternative model-independent measurement, integrating over the five-dimensional phase space of the decay, yields $$ \gamma =\left({44}_{-13}^{+20}\right){}^{\circ} $$ γ = 44 13 + 20 ° modulo 180°. Moreover, the $$ {B}_s^0\hbox{-} {\overline{B}}_s^0 $$ B s 0 B ¯ s 0 oscillation frequency is measured from the flavour-specific control channel $$ {B}_s^0\to {D}_s^{-}{\pi}^{+}{\pi}^{+}{\pi}^{-} $$ B s 0 D s π + π + π to be ∆ms = (17.757 ± 0.007(stat) ± 0.008(syst)) ps1, consistent with and more precise than the current world-average value.

Publisher

Springer Science and Business Media LLC

Subject

Nuclear and High Energy Physics

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