Measurement of CP asymmetries and branching fraction ratios of B− decays to two charm mesons

Lhcb Collaboration ,O Kot,F Suljik ,M Frank ,L Tomassetti ,A Lupato ,V Jevtic ,F Ronchetti ,T Harrison ,S L Yang ,J A De Vries ,R Song ,J Hu ,S Liu ,M Andreotti ,G Tonani ,H Schindler ,W Krupa ,D J D Thompson ,E Smith ,L Kolk ,O Kitouni ,S Barsuk ,C T Dean ,S Hansmann-Menzemer ,M Singla ,D H Campora Perez ,L Promberger ,A Modak ,O Leroy ,P Vázquez Regueiro ,J Hammerich ,E B Shields ,I C Chahrour ,L F Felkowski ,M Feng ,S Blusk ,Ming Zeng ,V Bellée ,S Ferreres Sole ,C Hadjivasiliou ,T H Lin ,U Egede ,T Nanut ,M F Cicala ,N Cooke ,S Gromov ,O Steinkamp ,A Gallas Torreira ,V Duk ,J Wang ,D A Milanés ,K Liu ,D Foulds-Holt ,S Zucchelli ,E L Gkougkousis ,E Gushchin ,M H Schune ,S Ely ,A S W Abdelmotteleb ,D Bobulska ,S Stanislaus ,V Kudryavtsev ,R Nandakumar ,M Saur ,D Nicotra ,J Brodzicka ,P Roloff ,Di Yang ,E Gabriel ,X Yuan ,J Baptista De Souza Leite ,T Mombächer ,J M Durham ,H R Qi ,A Boyer ,A Rollings ,M Vieites Diaz ,T Maltsev ,A Alfonso Albero ,M Adinolfi ,R Mcnulty ,M Rebollo De Miguel ,L M Greeven ,T H Mcgrath ,K Vos ,А Малинин ,D De Simone ,A Maevskiy ,A Merli ,И Белов ,M Romero Lamas ,E Dall’occo ,R Murta ,T Fulghesu ,M Stahl ,L Shekhtman ,M Monk ,R Forty ,I B Bediaga ,S Didenko ,C Henderson ,V Placinta ,R Wang ,S Kandybei ,H V Cliff ,V Vagnoni ,S Cali ,C A Chavez Barajas ,A Szabelski ,P N Swallow ,F Teubert ,P Krokovny ,G Bencivenni ,C Marín Benito ,A Lopez Huertas ,F Reiss ,B Mitreska ,M Wang ,L Buonincontri ,X Vilasis‐Cardona ,J E Blank ,S Schael ,B Rachwal ,S Bachmann ,S Stahl ,S Xian ,Q Xu ,B D C Westhenry ,Weisong Duan ,V B Bocharnikov ,Q Fuehring ,Y Sun ,V Denysenko ,M W Majewski ,P Gandini ,H Mu ,C Normand ,M Karacson ,S Malde ,L M Garcia Martin ,N Neufeld ,M M Halvorsen ,V Balagura ,J Herd ,Elisabet Golobardes ,Anastasiia Kozachuk ,J Cogan ,L Toscano ,L Sestini ,G Martellotti ,L Shchutska ,A Leflat ,S J Jaimes Elles ,M Gersabeck ,M J Bradley ,K Carvalho Akiba ,Y Li ,S Luchuk ,Y Fan ,L Hao ,L Meyer Garcia ,J M Otalora Goicochea ,R Ma ,G Ciullo ,B Souza De Paula ,M Whitehead ,P Di Nezza ,L Congedo ,Zhihong Shen ,G Robertson ,M W Slater ,C Abellán Beteta ,J J Lane ,A Berezhnoy ,Matteo Barbetti ,T Ketel ,M Cruz Torres ,M Karpov ,S C Haines ,T Gys ,M Sarpis ,V Franco Lima ,F Redi ,C L Da Silva ,R Quagliani ,M Calvi ,A Contu ,M Charles ,A Loi ,H Van Hecke ,G Schwering ,F Fontanelli ,K Hennessy ,J A Rodriguez Lopez ,X Yang ,K Świentek ,A Konoplyannikov ,A Sergi ,L Frontini ,W Qian ,N Serra ,A M Hennequin ,F Debernardis ,J Heuel ,V Dedu ,M S Rangel ,G Mancinelli ,A Villa ,J Cerasoli ,T J V Bowcock ,T Fiutowski ,M Poli Lener ,S Borghi ,E Jans ,R A Fini ,L An ,B Khanji ,F Goncalves Abrantes ,Y Wei ,A Sciuccati ,F F Wilson ,Z Wang ,I Kostiuk ,R Calabrese ,N Tuning ,V Zhovkovska ,M Merk ,I Longstaff ,M Garau ,N Jurik ,E Ben-Haim ,M Ramos Pernas ,L Cojocariu ,N Nikitin ,T Ackernley ,E Maurice ,M O Olocco ,S Capelli ,S Chernyshenko ,D Hutchcroft ,C Gu ,A Ene ,M Elashri ,F Alessio ,B K Jashal ,M Milovanovic ,A Biolchini ,Ning Qin ,F Martínez Vidal ,B Leverington ,B Sciascia ,M S Rudolph ,Nathan Allen Grieser ,M Idzik ,D Torres Machado ,F Polci ,G Corti ,D Marangotto ,W Hulsbergen ,A J Chadwick ,D Vieira ,A Gioventù ,W Byczynski ,P De Simone ,S Okamura ,N Valls Canudas ,M Ferro‐Luzzi ,B Dey ,R Shorkin ,L Martinazzoli ,A Chubykin ,F De Vellis ,H Yin ,E Epple ,D M Keller ,P A Günther ,U De Freitas Carneiro Da Graca ,A Oyanguren ,S Dadabaev ,J L Cobbledick ,A G Morris ,V Dobishuk ,J J Saborido Silva ,P Pais ,S Poslavskii ,E Gersabeck ,H C Bernstein ,J De Boer ,R D L Henderson ,D J Unverzagt ,F Abudinén ,D Lancierini ,D Miao ,S Kholodenko ,V Chobanova ,Zhihao Xu ,J C Smallwood ,T Colombo ,S Easo ,V Vorobyev ,P Cifra ,M Williams ,G Cavallero ,P Perret ,A Bizzeti ,S Neubert ,V Tisserand ,V Shevchenko ,L Garrido ,L Pica ,E Graugés ,A R Wiederhold ,R Jacobsson ,G Wilkinson ,F Machefert ,O Stenyakin ,S Amato ,H Yeung ,Y Jiang ,L Ferreira Lopes ,A Pastore ,J S Yu ,F Ferreira Rodrigues ,A Beck ,D Andreou ,L Dufour ,J Ryżka ,S Mokhnenko ,R H O'neil ,N Neri ,J E Davies ,T Boettcher ,D Vom Bruch ,J S Butter ,G Meier ,A Philippov ,C Dong ,P Robbe ,M Chefdeville ,I Diachkov ,L G Scantlebury Smead ,F Betti ,D Johnson ,M M Duras ,Xu Li ,J Bhom ,D Manuzzi ,C D’ambrosio ,E Shmanin ,N Bondar ,A Li ,S Simone ,M S Soares ,G Simi ,D Murray ,K Wyllie ,M Petruzzo ,M Zavertyaev ,M Hushchyn ,Wenqian Huang ,X Zhu ,C Lucarelli ,G D Lafferty ,E Polycarpo ,F Borgato ,M D Galati ,J Nicolini ,M Shapkin ,R Mountain ,S Belin ,S Escher ,S Perazzini ,R Santacesaria ,D Dutta ,E Aslanides ,L Bian ,P J Marshall ,E Thomas ,A Minotti ,G Bassi ,V Pugatch ,M D Tat ,K Gizdov ,Ao Xu ,S Nieswand ,M Goncerz ,E Rodríguez ,S A Wotton ,A Buonaura ,A Brea Rodríguez ,T Ovsiannikova ,T Li ,K De Bruyn ,C Gotti ,E Santovetti ,J W Kautz ,L Mcconnell ,F Stagni ,H.-P Dembinski ,X Cid Vidal ,X Han ,L Henry ,A Palano ,M J Morello ,G Liu ,D Maisuzenko ,V S Kirsebom ,R Ribatti ,A Kondybayeva ,L Sun ,O Schneider ,F Fleuret ,M Fernandez Gomez ,L Carus ,A Sarti ,B Saitta ,M Rama ,J He ,T Zhou ,A Bailly-Reyre ,L Grillo ,P Spradlin ,J Moroń ,S Farry ,G Haefeli ,J García Pardiñas ,M Bartolini ,H Stevens ,G N Nowak ,G H Lovell ,G Punzi ,R D Moise ,C Vrahas ,A Semennikov ,M Artuso ,F Lazzari ,P Carniti ,Y Zheng ,S Vecchi ,M Mazurek ,J Haimberger ,C Zhang ,A Andreianov ,M Gandelman ,I Juszczak ,A Ukleja ,T Ruf ,A Petrolini ,E Rodrigues ,F Baryshnikov ,Y S Su ,O De Aguiar Francisco ,E Spadaro Norella ,R Oldeman ,Y Wang ,A G Downes ,H Miao ,B Garcia Plana ,M Lucio Martínez ,J Eschle ,M Tobin ,T Hadavizadeh ,D Wiedner ,P Garcia Moreno ,A M Ricci ,F J P Soler ,J Mauricio ,M Palutan ,R Lefèvre ,D Kaminaris ,S Gambetta ,V Guliaeva ,N S Nolte ,K Prasanth ,R Schwemmer ,M Schubiger ,Zhiyu Xiang ,R Skuza ,D Lucchesi ,E Franzoso ,A Comerma-Montells ,J Langer ,M Guarise ,J G Speer ,L Del Buono ,I Mackay ,M R Kmiec ,V Puill ,M Andersson ,C Patrignani ,A Egorychev ,J J Back ,C Gaspar ,W Baldini ,G Passaleva ,G Panshin ,R Williams ,A Golutvin ,R J Barlow ,I Polyakov ,S Scherl ,C Haen ,Y Xie ,M Giovannetti ,A Hicheur ,S Ricciardi ,D Martínez Santos ,S Kubis ,M Calvo Gomez ,A Schopper ,S Taneja ,D Strekalina ,M.-N Minard ,M D Sokoloff ,S Schmitt ,A Obłąkowska-Mucha ,R Manera Escalero ,B Batsukh ,M Chrząszcz ,M Birch ,A T Burke ,M Piccini ,C Sanchez Gras ,S Zhang ,A L Gilman ,L Soares Lavra ,O Ozcelik ,A Bitadze ,Alexander Mclean Marshall ,R E Geertsema ,A Cardini ,C Parkes ,P D’argent ,L Fantini ,R A Mohammed ,F Oliva ,R Lindner ,G Sarpis ,K Belous ,A Iniukhin ,S Koliiev ,M De Serio ,R Newcombe ,J J Malczewski ,G Morello ,F Dettori ,M Needham ,M Mikhasenko ,A Gomes ,Xiaokang Zhou ,P Naik ,A Terentev ,J Dalseno ,K Richardson ,B Passalacqua ,J Kubat ,A Inglessi ,Matteo Salomoni ,K Petridis ,R Aaij ,D Popov ,D Lacarrère ,J Horswill ,L N Falcao ,J T Borsuk ,M Van Veghel ,B Pietrzyk ,Z Li ,S Monteil ,J G Smeaton ,K Rinnert ,A Venkateswaran ,O Boente García ,G Graziani ,S Cholak ,J Sun ,C Lin ,V Cavallini ,A Lai ,C Lazzeroni ,M Feo ,C Burr ,P Li ,L Zhang ,F Dordei ,O Lantwin ,C R Jones ,P Kopciewicz ,G Manca ,A Kupsc ,M Pappagallo ,D L Rolf ,M Bachmayer ,C Betancourt ,C J Pawley ,M Patel ,E Minucci ,D S Fitzgerald ,T Kirn ,C Nunez ,P Kravchenko ,J Ellbracht ,D Berninghoff ,F C R Bishop ,Maik Becker ,M S Bieker ,M A Giza ,M Kenzie ,А Артамонов ,B G Siddi ,V Chulikov ,B Audurier ,V Yeroshenko ,M Vesterinen ,Zishuo Yang ,A K Guseinov ,R Matev ,I Shchemerov ,A Jawahery ,S J Joshi ,D M Shangase ,M Szymański ,B Fang ,M Santimaria ,R Silva Coutinho ,S Klaver ,G Wan ,V Lisovskyi ,G Benane ,Y Kang ,L De Paula ,A Mcnab ,V Obraztsov ,A Massafferri ,M Rotondo ,L Z Zhu ,M Fontana ,R Caspary ,B Małecki ,Yu Guz ,J P Grabowski ,J Fu ,M Kreps ,F Fabiano ,M Alexander ,S Maccolini ,Y Tan ,D Websdale ,A B Morris ,F H Hemmer ,Thomas Oeser ,R Cardinale ,M Pizzichemi ,S Sellam ,R Le Gac ,B Schmidt ,D Fazzini ,J Walsh ,Z Aliouche ,Y Shimizu ,A Mauri ,N Kleijne ,A Seuthe ,P Campana ,E K Kulikova ,I Belyaev ,D Cervenkov ,К Ившин ,S Esen ,G Khreich ,X Tong ,V Romanovskiy ,J M De Miranda ,T Evans ,J D Shupperd ,D Golubkov ,C Matteuzzi ,Ia Bezshyiko ,G Raven ,M Hilton ,H Cai ,A Battig ,P Duda ,M Witek ,C Pappenheimer ,A Lampis ,S Celani ,R Bernet ,Guanghua Gong ,A Perro ,P M Hamilton ,K Lynch ,I Bachiller Perea ,A Castro ,E Rodriguez Fernandez ,P E.l Clarke ,V Coco ,V V Gligorov ,V Sriskaran ,Yang Yu ,J Closier ,B Shi ,D Savrina ,A Bertolin ,N Sagidova ,A M Schertz ,N K Watson ,T P Jones ,F Keizer ,I Nasteva ,J Reich ,Y Zhao ,R Kopecna ,M Wilkinson ,M W Dudek ,S A Bouchiba ,C Langenbruch ,D Pinci ,Rui Gao ,E Van Herwijnen ,F Ferrari ,S Jakobsen ,B Couturier ,H Pham ,A Pellegrino ,M Cattaneo ,A Lobo Salvia ,D Saranin ,B Meadows ,G Frau ,A Brossa Gonzalo ,T Blake ,L L Gerken ,S Eisenhardt ,Y Amhis ,Angel Fernando Campoverde Quezada ,C S Bolognani ,F Ratnikov ,I Williams ,J H Lopes ,P Ibis ,C A Aidala ,В Жуков ,E Luppi ,C Frei ,W Barter ,P Gironella Gironell ,I Sanderswood ,P Durante ,I Gorelov ,A Dzyuba ,M Faria ,P K Resmi ,X Dai ,R Vazquez Gomez ,F Archilli ,Z Lian ,G Pietrzyk ,S Legotin ,S E Hollitt ,R Hou ,E J Walton ,M Guittiere ,L Santoro ,N Schulte ,R Currie ,T Nakada ,Ph Charpentier ,Y R Hou ,S Kotriakhova ,A Mödden ,X -R Lyu ,R Lane ,P Koppenburg ,Q Zou ,L Witola ,D Hill ,S Schulte ,A Ustyuzhanin ,G Tuci ,M Schmelling ,R Lollini ,O Deschamps ,K R Mattioli ,V Egorychev ,K Klimaszewski ,L Kravchuk ,M P Morgenthaler ,F C Volle ,K M Smith ,F L Souza De Almeida ,J Zhang ,W Hu ,R J Hunter ,S Akar ,G Casse ,W Wiślicki ,K M Fischer ,J F Marchand ,D J White ,L Giambastiani ,G Ciezarek ,A Valassi ,D Pereima ,C Chen ,G Wormser ,J Albrecht ,T Gershon ,A Casais Vidal ,R Piandani ,S Chen ,R Rajagopalan ,G Martelli ,M Smith ,H Jage ,Z Ajaltouni ,C Vázquez Sierra ,C Agapopoulou ,L Dai ,S Sheng ,D Ao ,S Petrucci ,A Carbone ,A M Donohoe ,S Ponce ,A Davis ,M P Blago ,Q Liu ,K Heijhoff ,E Spiridenkov ,F A Garcia Rosales ,C Mancuso ,L Douglas ,Sergio Gómez Fernández ,C A Manzari ,H Li ,K Padeken ,D Décamp ,K Müller ,S Qu ,U Uwer ,K Li ,C Santamarina Ríos ,X Jiang ,M Kucharczyk ,V Maćko ,M Richardson-Slipper ,J Brown ,A Bay ,T Latham ,R A Ruiz Fernandez ,Y Shang ,A Zharkova ,Y Luo ,P Ciambrone ,P -R Li ,N Polukhina ,M Fiorini ,S Cadeddu ,F Blanc ,J J Velthuis ,Y Zhang ,M Zdybał ,V Gibson ,L Anderlini ,G Wang ,D Karpenkov ,M Pló Casasús ,A Dolmatov ,S H Lee ,R Bolzonella ,D Zhang ,D Ilin ,R Litvinov ,B Pagare ,C Bertella ,М Королев ,M Mulder ,Jingyi Xu ,M John ,N Skidmore ,M Hatch ,D Melnychuk ,L R Madhan Mohan ,D S Mitzel ,M Martinelli ,A S Boldyrev ,U Marconi ,D Y Tou ,G Valenti ,P Baladrón Rodríguez ,P Lenisa ,N Sahoo ,T Szumlak ,E Zaffaroni ,X Huang ,X Wang ,A Danilina ,S Braun ,Z Zhu ,M Materok ,E Graverini ,Y Song ,A Snoch ,P Adlarson ,S Ek-In ,P Vincent ,A Papanestis ,C Bozzi ,M Pepe Altarelli ,D Brundu ,Hangyi Wu ,S Mariani ,J Buytaert ,J Plews ,S De Capua ,C Hasse ,Y Lu ,C P Wong ,F Muheim ,E Spedicato ,A Tully ,H Afsharnia ,R Amalric ,L Capriotti ,M Xu ,T Pajero ,S T’jampens ,D A Friday ,P Albicocco ,M Van Dijk ,P Ilten ,T Skwarnicki ,A Beiter ,A Bursche ,B Adeva ,P Collins ,M Mccann ,M G Chapman ,C J G Onderwater ,A Ishteev ,A Mathad ,C Eirea Orro ,A Zhelezov ,Y Gao ,A Scarabotto ,T Shears ,S López Soliño ,M Atzeni ,V Matiunin ,X Liang ,S Kretzschmar ,W Krzemień ,G Galati ,N T Mchugh ,F Bedeschi ,M Firlej ,T Miralles ,E De Lucia ,N Voropaev ,J Zhuo ,B Jost ,H Tilquin ,C Wang ,N V Biesuz ,S Filippov ,M Ferrillo ,A Kharisova ,M Clemencic ,C Prouvé ,T Halewood-Leagas ,I Corredoira ,J H Rademacker ,F Pisani ,A Romero Vidal ,C Fitzpatrick ,F Maciuc ,J L Amey ,S Bernet Andres ,M Veltri ,A Solovev ,L Eklund ,P Neustroev ,M Schiller ,J Novoa Fernandez ,B Delaney ,C Satriano ,A T Grecu ,D Zuliani ,P Owen ,C Göbel ,X Hu ,M Borsato ,E M Niel ,M De Cian ,E Muhammad ,N Breer ,E Ejopu ,T Lesiak ,E Cogneras ,J Marks ,S Li ,J Daniel ,Eduard Ursov ,M Franco Sevilla ,H Liu ,J Lomba Castro ,A Butkevich ,H Sazak ,D Galli ,Y Zhou ,P Muzzetto ,L A Granado Cardoso ,A Satta ,W Kucewicz ,M Williams ,V Lukashenko ,Eva Vilella Figueras ,C Giugliano ,J A Boelhauve ,E N Stein ,L Calefice ,H K Giemza ,N Harnew ,A Usachov ,J M Basels ,C B Van Hulse ,H G Gao ,I R Barbosa ,S E Mitchell ,Z Ren ,P Alvarez Cartelle ,P Billoir ,L L Pappalardo ,A Chernov ,I A Monroy ,A Dziurda ,C Landesa Gomez ,L Paolucci ,Y Wu ,J A Ward ,A Poluektov ,Q Han ,A Ryzhikov ,I Solovyev ,A C Dos Reis ,D C Craik ,J Ruiz Vidal ,Jian Wu ,S Ding ,A Solomin ,A D Fernez ,C Trippl ,E Jiang ,G Zunica

doi:10.1007/jhep09(2023)202

Abstract

The CP asymmetries of seven B− decays to two charm mesons are measured using data corresponding to an integrated luminosity of 9 fb−1 of proton-proton collisions collected by the LHCb experiment. Decays involving a D*0 or Ds∗−\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$ {D}_s^{\\ast -} $$\\end{document} meson are analysed by reconstructing only the D0 or Ds−\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$ {D}_s^{-} $$\\end{document} decay products. This paper presents the first measurement of A\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$ \\mathcal{A} $$\\end{document}CP(B−→Ds∗−\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$ {D}_s^{\\ast -} $$\\end{document}D0) and A\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$ \\mathcal{A} $$\\end{document}CP(B−→Ds−\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$ {D}_s^{-} $$\\end{document}D∗0), and the most precise measurement of the other five CP asymmetries. There is no evidence of CP violation in any of the analysed decays. Additionally, two ratios between branching fractions of selected decays are measured.

Full Text