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Measurement of the Time-Integrated CP Asymmetry in D^{0}→K^{-}K^{+} Decays.
Authors :
Aaij R Abdelmotteleb ASW Abellan Beteta C Abudinén F Ackernley T Adeva B Adinolfi M Adlarson P Afsharnia H Agapopoulou C Aidala CA Aiola S Ajaltouni Z Akar S Akiba K Albrecht J Alessio F Alexander M Alfonso Albero A Aliouche Z Alvarez Cartelle P Amalric R Amato S Amey JL Amhis Y An L Anderlini L Andersson M Andreianov A Andreotti M Andreou D Ao D Archilli F Artamonov A Artuso M Aslanides E Atzeni M Audurier B Bachmann S Bachmayer M Back JJ Bailly-Reyre A Baladron Rodriguez P Balagura V Baldini W Baptista de Souza Leite J Barbetti M Barlow RJ Barsuk S Barter W Bartolini M Baryshnikov F Basels JM Bassi G Batsukh B Battig A Bay A Beck A Becker M Bedeschi F Bediaga IB Beiter A Belavin V Belin S Bellee V Belous K Belov I Belyaev I Benane G Bencivenni G Ben-Haim E Berezhnoy A Bernet R Bernet Andres S Berninghoff D Bernstein HC Bertella C Bertolin A Betancourt C Betti F Bezshyiko I Bhasin S Bhom J Bian L Bieker MS Biesuz NV Bifani S Billoir P Biolchini A Birch M Bishop FCR Bitadze A Bizzeti A Blago MP Blake T Blanc F Blusk S Bobulska D Boelhauve JA Boente Garcia O Boettcher T Boldyrev A Bolognani CS Bolzonella R Bondar N Borgato F Borghi S Borsato M Borsuk JT Bouchiba SA Bowcock TJV Boyer A Bozzi C Bradley MJ Braun S Brea Rodriguez A Brodzicka J Brossa Gonzalo A Brown J Brundu D Buonaura A Buonincontri L Burke AT Burr C Bursche A Butkevich A Butter JS Buytaert J Byczynski W Cadeddu S Cai H Calabrese R Calefice L Cali S Calladine R Calvi M Calvo Gomez M Campana P Campora Perez DH Campoverde Quezada AF Capelli S Capriotti L Carbone A Carboni G Cardinale R Cardini A Carli I Carniti P Carus L Casais Vidal A Caspary R Casse G Cattaneo M Cavallero G Cavallini V Celani S Cerasoli J Cervenkov D Chadwick AJ Chapman MG Charles M Charpentier P Chavez Barajas CA Chefdeville M Chen C Chen S Chernov A Chernyshenko S Chobanova V Cholak S Chrzaszcz M Chubykin A Chulikov V Ciambrone P Cicala MF Cid Vidal X Ciezarek G Ciullo G Clarke PEL Clemencic M Cliff HV Closier J Cobbledick JL Coco V Coelho JAB Cogan J Cogneras E Cojocariu L Collins P Colombo T Congedo L Contu A Cooke N Corredoira I Corti G Couturier B Craik DC Crkovská J Cruz Torres M Currie R Da Silva CL Dadabaev S Dai L Dai X Dall'Occo E Dalseno J D'Ambrosio C Daniel J Danilina A d'Argent P Davies JE Davis A De Aguiar Francisco O de Boer J De Bruyn K De Capua S De Cian M De Freitas Carneiro Da Graca U De Lucia E De Miranda JM De Paula L De Serio M De Simone D De Simone P De Vellis F de Vries JA Dean CT Debernardis F Decamp D Dedu V Del Buono L Delaney B Dembinski HP Denysenko V Deschamps O Dettori F Dey B Di Cicco A Di Nezza P Diachkov I Didenko S Dieste Maronas L Ding S Dobishuk V Dolmatov A Dong C Donohoe AM Dordei F Dos Reis AC Douglas L Downes AG Duda P Dudek MW Dufour L Duk V Durante P Duras MM Durham JM Dutta D Dziurda A Dzyuba A Easo S Egede U Egorychev V Eidelman S Eirea Orro C Eisenhardt S Ejopu E Ek-In S Eklund L Ely S Ene A Epple E Escher S Eschle J Esen S Evans T Fabiano F Falcao LN Fan Y Fang B Fantini L Faria M Farry S Fazzini D Felkowski LF Feo M Fernandez Gomez M Fernez AD Ferrari F Ferreira Lopes L Ferreira Rodrigues F Ferreres Sole S Ferrillo M Ferro-Luzzi M Filippov S Fini RA Fiorini M Firlej M Fischer KM Fitzgerald DS Fitzpatrick C Fiutowski T Fleuret F Fontana M Fontanelli F Forty R Foulds-Holt D Franco Lima V Franco Sevilla M Frank M Franzoso E Frau G Frei C Friday DA Fu J Fuehring Q Fulghesu T Gabriel E Galati G Galati MD Gallas Torreira A Galli D Gambetta S Gan Y Gandelman M Gandini P Gao Y Garau M Garcia Martin LM Garcia Moreno P García Pardiñas J Garcia Plana B Garcia Rosales FA Garrido L Gaspar C Geertsema RE Gerick D Gerken LL Gersabeck E Gersabeck M Gershon T Giambastiani L Gibson V Giemza HK Gilman AL Giovannetti M Gioventù A Gironella Gironell P Giugliano C Giza MA Gizdov K Gkougkousis EL Gligorov VV Göbel C Golobardes E Golubkov D Golutvin A Gomes A Gomez Fernandez S Goncalves Abrantes F Goncerz M Gong G Gorelov IV Gotti C Grabowski JP Grammatico T Granado Cardoso LA Graugés E Graverini E Graziani G Grecu AT Greeven LM Grieser NA Grillo L Gromov S Gruberg Cazon BR Gu C Guarise M Guittiere M Günther PA Gushchin E Guth A Guz Y Gys T Hadavizadeh T Haefeli G Haen C Haimberger J Haines SC Halewood-Leagas T Halvorsen MM Hamilton PM Hammerich J Han Q Han X Hansen EB Hansmann-Menzemer S Hao L Harnew N Harrison T Hasse C Hatch M He J Heijhoff K Heinicke K Henderson C Henderson RDL Hennequin AM Hennessy K Henry L Herd J Heuel J Hicheur A Hill D Hilton M Hollitt SE Horswill J Hou R Hou Y Hu J Hu J Hu W Hu X Huang W Huang X Hulsbergen W Hunter RJ Hushchyn M Hutchcroft D Ibis P Idzik M Ilin D Ilten P Inglessi A Iniukhin A Ishteev A Ivshin K Jacobsson R Jage H Jaimes Elles SJ Jakobsen S Jans E Jashal BK Jawahery A Jevtic V Jiang E Jiang X Jiang Y John M Johnson D Jones CR Jones TP Jost B Jurik N Juszczak I Kandybei S Kang Y Karacson M Karpenkov D Karpov M Kautz JW Keizer F Keller DM Kenzie M Ketel T Khanji B Kharisova A Kholodenko S Khreich G Kirn T Kirsebom VS Kitouni O Klaver S Kleijne N Klimaszewski K Kmiec MR Koliiev S Kondybayeva A Konoplyannikov A Kopciewicz P Kopecna R Koppenburg P Korolev M Kostiuk I Kot O Kotriakhova S Kozachuk A Kravchenko P Kravchuk L Krawczyk RD Kreps M Kretzschmar S Krokovny P Krupa W Krzemien W Kubat J Kubis S Kucewicz W Kucharczyk M Kudryavtsev V Kunde GJ Kupsc A Lacarrere D Lafferty G Lai A Lampis A Lancierini D Landesa Gomez C Lane JJ Lane R Lanfranchi G Langenbruch C Langer J Lantwin O Latham T Lazzari F Lazzaroni M Le Gac R Lee SH Lefèvre R Leflat A Legotin S Lenisa P Leroy O Lesiak T Leverington B Li A Li H Li K Li P Li PR Li S Li T Li Y Li Z Liang X Lin C Lin T Lindner R Lisovskyi V Litvinov R Liu G Liu H Liu Q Liu S Lobo Salvia A Loi A Lollini R Lomba Castro J Longstaff I Lopes JH Lopez Huertas A López Soliño S Lovell GH Lu Y Lucarelli C Lucchesi D Luchuk S Lucio Martinez M Lukashenko V Luo Y Lupato A Luppi E Lusiani A Lynch K Lyu XR Ma L Ma R Maccolini S Machefert F Maciuc F Mackay I Macko V Mackowiak P Madhan Mohan LR Maevskiy A Maisuzenko D Majewski MW Malczewski JJ Malde S Malecki B Malinin A Maltsev T Manca G Mancinelli G Mancuso C Manuzzi D Manzari CA Marangotto D Marchand JF Marconi U Mariani S Marin Benito C Marks J Marshall AM Marshall PJ Martelli G Martellotti G Martinazzoli L Martinelli M Martinez Santos D Martinez Vidal F Massafferri A Materok M Matev R Mathad A Matiunin V Matteuzzi C Mattioli KR Mauri A Maurice E Mauricio J Mazurek M McCann M Mcconnell L McGrath TH McHugh NT McNab A McNulty R Mead JV Meadows B Meier G Melnychuk D Meloni S Merk M Merli A Meyer Garcia L Miao D Mikhasenko M Milanes DA Millard E Milovanovic M Minard MN Minotti A Miralles T Mitchell SE Mitreska B Mitzel DS Mödden A Mohammed RA Moise RD Mokhnenko S Mombächer T Monk M Monroy IA Monteil S Morandin M Morello G Morello MJ Moron J Morris AB Morris AG Mountain R Mu H Muhammad E Muheim F Mulder M Müller K Murphy CH Murray D Murta R Muzzetto P Naik P Nakada T Nandakumar R Nanut T Nasteva I Needham M Neri N Neubert S Neufeld N Neustroev P Newcombe R Nicolini J Niel EM Nieswand S Nikitin N Nolte NS Normand C Novoa Fernandez J Nunez C Oblakowska-Mucha A Obraztsov V Oeser T O'Hanlon DP Okamura S Oldeman R Oliva F Onderwater CJG O'Neil RH Otalora Goicochea JM Ovsiannikova T Owen P Oyanguren A Ozcelik O Padeken KO Pagare B Pais PR Pajero T Palano A Palutan M Pan Y Panshin G Paolucci L Papanestis A Pappagallo M Pappalardo LL Pappenheimer C Parker W Parkes C Passalacqua B Passaleva G Pastore A Patel M Patrignani C Pawley CJ Pearce A Pellegrino A Pepe Altarelli M Perazzini S Pereima D Pereiro Castro A Perret P Petric M Petridis K Petrolini A Petrov A Petrucci S Petruzzo M Pham H Philippov A Piandani R Pica L Piccini M Pietrzyk B Pietrzyk G Pili M Pinci D Pisani F Pizzichemi M Placinta V Plews J Plo Casasus M Polci F Poli Lener M Poliakova M Poluektov A Polukhina N Polyakov I Polycarpo E Ponce S Popov D Popov S Poslavskii S Prasanth K Promberger L Prouve C Pugatch V Puill V Punzi G Qi HR Qian W Qin N Qu S Quagliani R Raab NV Rabadan Trejo RI Rachwal B Rademacker JH Rajagopalan R Rama M Ramos Pernas M Rangel MS Ratnikov F Raven G Rebollo De Miguel M Redi F Reich J Reiss F Remon Alepuz C Ren Z Resmi PK Ribatti R Ricci AM Ricciardi S Richardson K Richardson-Slipper M Rinnert K Robbe P Robertson G Rodrigues AB Rodrigues E Rodriguez Fernandez E Rodriguez Lopez JA Rodriguez Rodriguez E Rolf DL Rollings A Roloff P Romanovskiy V Romero Lamas M Romero Vidal A Roth JD Rotondo M Rudolph MS Ruf T Ruiz Fernandez RA Ruiz Vidal J Ryzhikov A Ryzka J Saborido Silva JJ Sagidova N Sahoo N Saitta B Salomoni M Sanchez Gras C Sanderswood I 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 LG Scarabotto A Schael S Scherl S Schiller M Schindler H Schmelling M Schmidt B Schmitt S Schneider O Schopper A Schubiger M Schulte S Schune MH Schwemmer R Sciascia B Sciuccati A Sellam S Semennikov A Senghi Soares M Sergi A Serra N Sestini L Seuthe A Shang Y Shangase DM Shapkin M Shchemerov I Shchutska L Shears T Shekhtman L Shen Z Sheng S Shevchenko V Shi B Shields EB Shimizu Y Shmanin E Shorkin R Shupperd JD Siddi BG Silva Coutinho R Simi G Simone S Singla M Skidmore N Skuza R Skwarnicki T Slater MW Smallwood JC Smeaton JG Smith E Smith K Smith M Snoch A Soares Lavra L Sokoloff MD Soler FJP Solomin A Solovev A Solovyev I Song R Souza De Almeida FL Souza De Paula B Spaan B Spadaro Norella E Spedicato E Spiridenkov E Spradlin P Sriskaran V Stagni F Stahl M Stahl S Stanislaus S Stein EN Steinkamp O Stenyakin O Stevens H Stone S Strekalina D Suljik F Sun J Sun L Sun Y Svihra P Swallow PN Swientek K Szabelski A Szumlak T Szymanski M Tan Y Taneja S Tanner AR Tat MD Terentev A Teubert F Thomas E Thompson DJD Thomson KA Tilquin H Tisserand V T'Jampens S Tobin M Tomassetti L Tonani G Tong X Torres Machado D Tou DY Trifonova E Trilov SM Trippl C Tuci G Tully A Tuning N Ukleja A Unverzagt DJ Usachov A Ustyuzhanin A Uwer U Vagner A Vagnoni V Valassi A Valenti G Valls Canudas N van Beuzekom M Van Dijk M Van Hecke H van Herwijnen E Van Hulse CB van Veghel M Vazquez Gomez R Vazquez Regueiro P Vázquez Sierra C Vecchi S Velthuis JJ Veltri M Venkateswaran A Veronesi M Vesterinen M Vieira D Vieites Diaz M Vilasis-Cardona X Vilella Figueras E Villa A Vincent P Volle FC Vom Bruch D Vorobyev A Vorobyev V Voropaev N Vos K Vrahas C Waldi R Walsh J Wan G Wang C Wang J Wang J Wang J Wang J Wang M Wang R Wang X Wang Y Wang Z Wang Z Wang Z Ward JA Watson NK Websdale D Wei Y Weisser C Westhenry BDC White DJ Whitehead M Wiederhold AR Wiedner D Wilkinson G Wilkinson MK Williams I Williams M Williams MRJ Williams R Wilson FF Wislicki W Witek M Witola L Wong CP Wormser G Wotton SA Wu H Wyllie K Xiang Z Xiao D Xie Y Xu A Xu J Xu L Xu L Xu M Xu Q Xu Z Xu Z Yang D Yang S Yang X Yang Y Yang Z Yang Z Yeomans LE Yeroshenko V Yeung H Yin H Yu J Yuan X Zaffaroni E Zavertyaev M Zdybal M Zenaiev O Zeng M Zhang C Zhang D Zhang L Zhang S Zhang S Zhang Y Zhang Y Zharkova A Zhelezov A Zheng Y Zhou T Zhou X Zhou Y Zhovkovska V Zhu X Zhu X Zhu Z Zhukov V Zou Q Zucchelli S Zuliani D Zunica G
Source :
Physical review letters [Phys Rev Lett] 2023 Sep 01; Vol. 131 (9), pp. 091802.
Publication Year :
2023
Abstract
The time-integrated CP asymmetry in the Cabibbo-suppressed decay D^{0}→K^{-}K^{+} is measured using proton-proton collision data, corresponding to an integrated luminosity of 5.7 fb^{-1} collected at a center-of-mass energy of 13 TeV with the LHCb detector. The D^{0} mesons are required to originate from promptly produced D^{*+}→D^{0}π^{+} decays, and the charge of the companion pion is used to determine the flavor of the charm meson at production. The time-integrated CP asymmetry is measured to be A_{CP}(K^{-}K^{+})=[6.8±5.4±1.6]×10^{-4} where the first uncertainty is statistical and the second systematic. The direct CP asymmetries in D^{0}→K^{-}K^{+} and D^{0}→π^{-}π^{+} decays, a_{K^{-}K^{+}}^{d} and a_{π^{-}π^{+}}^{d}, are derived by combining A_{CP}(K^{-}K^{+}) with the time-integrated CP asymmetry difference, ΔA_{CP}=A_{CP}(K^{-}K^{+})-A_{CP}(π^{-}π^{+}), and other inputs, giving a_{K^{-}K^{+}}^{d}=(7.7±5.7)×10^{-4},a_{π^{-}π^{+}}^{d}=(23.2±6.1)×10^{-4},with a correlation coefficient corresponding to ρ=0.88. The compatibility of these results with CP symmetry is 1.4 and 3.8 standard deviations for D^{0}→K^{-}K^{+} and D^{0}→π^{-}π^{+} decays, respectively. This is the first evidence for direct CP violation in a specific D^{0} decay.
Details
Language :
English
ISSN :
1079-7114
Volume :
131
Issue :
9
Database :
MEDLINE
Journal :
Physical review letters
Publication Type :
Academic Journal
Accession number :
37721849
Full Text :
https://doi.org/10.1103/PhysRevLett.131.091802