利用\(b^+\to K^+\ell^+\ell^-\)衰变对轻子普适性的检验。
Test of lepton universality using b+ → K+ℓ+ℓ- decays.
作者信息
Aaij R, Adeva B, Adinolfi M, Affolder A, Ajaltouni Z, Akar S, Albrecht J, Alessio F, Alexander M, Ali S, Alkhazov G, Alvarez Cartelle P, Alves A A, Amato S, Amerio S, Amhis Y, An L, Anderlini L, Anderson J, Andreassen R, Andreotti M, Andrews J E, Appleby R B, Aquines Gutierrez O, Archilli F, Artamonov A, Artuso M, Aslanides E, Auriemma G, Baalouch M, Bachmann S, Back J J, Badalov A, Balagura V, Baldini W, Barlow R J, Barschel C, Barsuk S, Barter W, Batozskaya V, Battista V, Bay A, Beaucourt L, Beddow J, Bedeschi F, Bediaga I, Belogurov S, Belous K, Belyaev I, Ben-Haim E, Bencivenni G, Benson S, Benton J, Berezhnoy A, Bernet R, Bettler M-O, van Beuzekom M, Bien A, Bifani S, Bird T, Bizzeti A, Bjørnstad P M, Blake T, Blanc F, Blouw J, Blusk S, Bocci V, Bondar A, Bondar N, Bonivento W, Borghi S, Borgia A, Borsato M, Bowcock T J V, Bowen E, Bozzi C, Brambach T, van den Brand J, Bressieux J, Brett D, Britsch M, Britton T, Brodzicka J, Brook N H, Brown H, Bursche A, Busetto G, Buytaert J, Cadeddu S, Calabrese R, Calvi M, Calvo Gomez M, Campana P, Campora Perez D, Carbone A, Carboni G, Cardinale R, Cardini A, Carson L, Carvalho Akiba K, Casse G, Cassina L, Castillo Garcia L, Cattaneo M, Cauet Ch, Cenci R, Charles M, Charpentier Ph, Chen S, Cheung S-F, Chiapolini N, Chrzaszcz M, Ciba K, Cid Vidal X, Ciezarek G, Clarke P E L, Clemencic M, Cliff H V, Closier J, Coco V, Cogan J, Cogneras E, Collins P, Comerma-Montells A, Contu A, Cook A, Coombes M, Coquereau S, Corti G, Corvo M, Counts I, Couturier B, Cowan G A, Craik D C, Cruz Torres M, Cunliffe S, Currie R, D'Ambrosio C, Dalseno J, David P, David P N Y, Davis A, De Bruyn K, De Capua S, De Cian M, De Miranda J M, De Paula L, De Silva W, De Simone P, Decamp D, Deckenhoff M, Del Buono L, Déléage N, Derkach D, Deschamps O, Dettori F, Di Canto A, Dijkstra H, Donleavy S, Dordei F, Dorigo M, Dosil Suárez A, Dossett D, Dovbnya A, Dreimanis K, Dujany G, Dupertuis F, Durante P, Dzhelyadin R, Dziurda A, Dzyuba A, Easo S, Egede U, Egorychev V, Eidelman S, Eisenhardt S, Eitschberger U, Ekelhof R, Eklund L, El Rifai I, Elsasser Ch, Ely S, Esen S, Evans H-M, Evans T, Falabella A, Färber C, Farinelli C, Farley N, Farry S, Fay Rf, Ferguson D, Fernandez Albor V, Ferreira Rodrigues F, Ferro-Luzzi M, Filippov S, Fiore M, Fiorini M, Firlej M, Fitzpatrick C, Fiutowski T, Fontana M, Fontanelli F, Forty R, Francisco O, Frank M, Frei C, Frosini M, Fu J, Furfaro E, Gallas Torreira A, Galli D, Gallorini S, Gambetta S, Gandelman M, Gandini P, Gao Y, García Pardiñas J, Garofoli J, Garra Tico J, Garrido L, Gaspar C, Gauld R, Gavardi L, Gavrilov G, Gersabeck E, Gersabeck M, Gershon T, Ghez Ph, Gianelle A, Giani' S, Gibson V, Giubega L, Gligorov V V, Göbel C, Golubkov D, Golutvin A, Gomes A, Gordon H, Gotti C, Grabalosa Gándara M, Graciani Diaz R, Granado Cardoso L A, Graugés E, Graziani G, Grecu A, Greening E, Gregson S, Griffith P, Grillo L, Grünberg O, Gui B, Gushchin E, Guz Yu, Gys T, Hadjivasiliou C, Haefeli G, Haen C, Haines S C, Hall S, Hamilton B, Hampson T, Han X, Hansmann-Menzemer S, Harnew N, Harnew S T, Harrison J, He J, Head T, Heijne V, Hennessy K, Henrard P, Henry L, Hernando Morata J A, van Herwijnen E, Heß M, Hicheur A, Hill D, Hoballah M, Hombach C, Hulsbergen W, Hunt P, Hussain N, Hutchcroft D, Hynds D, Idzik M, Ilten P, Jacobsson R, Jaeger A, Jalocha J, Jans E, Jaton P, Jawahery A, Jing F, John M, Johnson D, Jones C R, Joram C, Jost B, Jurik N, Kaballo M, Kandybei S, Kanso W, Karacson M, Karbach T M, Karodia S, Kelsey M, Kenyon I R, Ketel T, Khanji B, Khurewathanakul C, Klaver S, Klimaszewski K, Kochebina O, Kolpin M, Komarov I, Koopman R F, Koppenburg P, Korolev M, Kozlinskiy A, Kravchuk L, Kreplin K, Kreps M, Krocker G, Krokovny P, Kruse F, Kucewicz W, Kucharczyk M, Kudryavtsev V, Kurek K, Kvaratskheliya T, La Thi V N, Lacarrere D, Lafferty G, Lai A, Lambert D, Lambert R W, Lanfranchi G, Langenbruch C, Langhans B, Latham T, Lazzeroni C, Le Gac R, van Leerdam J, Lees J-P, Lefèvre R, Leflat A, Lefrançois J, Leo S, Leroy O, Lesiak T, Leverington B, Li Y, Liles M, Lindner R, Linn C, Lionetto F, Liu B, Liu G, Lohn S, Longstaff I, Lopes J H, Lopez-March N, Lowdon P, Lu H, Lucchesi D, Luo H, Lupato A, Luppi E, Lupton O, Machefert F, Machikhiliyan I V, Maciuc F, Maev O, Malde S, Manca G, Mancinelli G, Maratas J, Marchand J F, Marconi U, Marin Benito C, Marino P, Märki R, Marks J, Martellotti G, Martens A, Martín Sánchez A, Martinelli M, Martinez Santos D, Martinez Vidal F, Martins Tostes D, Massafferri A, Matev R, Mathe Z, Matteuzzi C, Mazurov A, McCann M, McCarthy J, McNab A, McNulty R, McSkelly B, Meadows B, Meier F, Meissner M, Merk M, Milanes D A, Minard M-N, Moggi N, Molina Rodriguez J, Monteil S, Morandin M, Morawski P, Mordà A, Morello M J, Moron J, Morris A-B, Mountain R, Muheim F, Müller K, Mussini M, Muster B, Naik P, Nakada T, Nandakumar R, Nasteva I, Needham M, Neri N, Neubert S, Neufeld N, Neuner M, Nguyen A D, Nguyen T D, Nguyen-Mau C, Nicol M, Niess V, Niet R, Nikitin N, Nikodem T, Novoselov A, O'Hanlon D P, Oblakowska-Mucha A, Obraztsov V, Oggero S, Ogilvy S, Okhrimenko O, Oldeman R, Onderwater G, Orlandea M, Otalora Goicochea J M, Owen P, Oyanguren A, Pal B K, Palano A, Palombo F, Palutan M, Panman J, Papanestis A, Pappagallo M, Parkes C, Parkinson C J, Passaleva G, Patel G D, Patel M, Patrignani C, Pazos Alvarez A, Pearce A, Pellegrino A, Pepe Altarelli M, Perazzini S, Perez Trigo E, Perret P, Perrin-Terrin M, Pescatore L, Pesen E, Petridis K, Petrolini A, Picatoste Olloqui E, Pietrzyk B, Pilař T, Pinci D, Pistone A, Playfer S, Plo Casasus M, Polci F, Poluektov A, Polycarpo E, Popov A, Popov D, Popovici B, Potterat C, Price E, Prisciandaro J, Pritchard A, Prouve C, Pugatch V, Puig Navarro A, Punzi G, Qian W, Rachwal B, Rademacker J H, Rakotomiaramanana B, Rama M, Rangel M S, Raniuk I, Rauschmayr N, Raven G, Reichert S, Reid M M, Dos Reis A C, Ricciardi S, Richards S, Rihl M, Rinnert K, Rives Molina V, Roa Romero D A, Robbe P, Rodrigues A B, Rodrigues E, Rodriguez Perez P, Roiser S, Romanovsky V, Romero Vidal A, Rotondo M, Rouvinet J, Ruf T, Ruffini F, Ruiz H, Ruiz Valls P, Saborido Silva J J, Sagidova N, Sail P, Saitta B, Salustino Guimaraes V, Sanchez Mayordomo C, Sanmartin Sedes B, Santacesaria R, Santamarina Rios C, Santovetti E, Sarti A, Satriano C, Satta A, Saunders D M, Savrie M, Savrina D, Schiller M, Schindler H, Schlupp M, Schmelling M, Schmidt B, Schneider O, Schopper A, Schune M-H, Schwemmer R, Sciascia B, Sciubba A, Seco M, Semennikov A, Sepp I, Serra N, Serrano J, Sestini L, Seyfert P, Shapkin M, Shapoval I, Shcheglov Y, Shears T, Shekhtman L, Shevchenko V, Shires A, Silva Coutinho R, Simi G, Sirendi M, Skidmore N, Skwarnicki T, Smith N A, Smith E, Smith E, Smith J, Smith M, Snoek H, Sokoloff M D, Soler F J P, Soomro F, Souza D, Souza De Paula B, Spaan B, Sparkes A, Spradlin P, Sridharan S, Stagni F, Stahl M, Stahl S, Steinkamp O, Stenyakin O, Stevenson S, Stoica S, Stone S, Storaci B, Stracka S, Straticiuc M, Straumann U, Stroili R, Subbiah V K, Sun L, Sutcliffe W, Swientek K, Swientek S, Syropoulos V, Szczekowski M, Szczypka P, Szilard D, Szumlak T, T'Jampens S, Teklishyn M, Tellarini G, Teubert F, Thomas C, Thomas E, van Tilburg J, Tisserand V, Tobin M, Tolk S, Tomassetti L, Tonelli D, Topp-Joergensen S, Torr N, Tournefier E, Tourneur S, Tran M T, Tresch M, Tsaregorodtsev A, Tsopelas P, Tuning N, Ubeda Garcia M, Ukleja A, Ustyuzhanin A, Uwer U, Vagnoni V, Valenti G, Vallier A, Vazquez Gomez R, Vazquez Regueiro P, Vázquez Sierra C, Vecchi S, Velthuis J J, Veltri M, Veneziano G, Vesterinen M, Viaud B, Vieira D, Vieites Diaz M, Vilasis-Cardona X, Vollhardt A, Volyanskyy D, Voong D, Vorobyev A, Vorobyev V, Voß C, Voss H, de Vries J A, Waldi R, Wallace C, Wallace R, Walsh J, Wandernoth S, Wang J, Ward D R, Watson N K, Websdale D, Whitehead M, Wicht J, Wiedner D, Wilkinson G, Williams M P, Williams M, Wilson F F, Wimberley J, Wishahi J, Wislicki W, Witek M, Wormser G, Wotton S A, Wright S, Wu S, Wyllie K, Xie Y, Xing Z, Xu Z, Yang Z, Yuan X, Yushchenko O, Zangoli M, Zavertyaev M, Zhang L, Zhang W C, Zhang Y, Zhelezov A, Zhokhov A, Zhong L, Zvyagin A
机构信息
Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands.
Universidad de Santiago de Compostela, Santiago de Compostela, Spain.
出版信息
Phys Rev Lett. 2014 Oct 10;113(15):151601. doi: 10.1103/PhysRevLett.113.151601. Epub 2014 Oct 6.
A measurement of the ratio of the branching fractions of the B(+) → K(+)μ(+)μ(-) and B(+) → K(+)e(+)e(-) decays is presented using proton-proton collision data, corresponding to an integrated luminosity of 3.0 fb(-1), recorded with the LHCb experiment at center-of-mass energies of 7 and 8 TeV. The value of the ratio of branching fractions for the dilepton invariant mass squared range 1 < q(2) < 6 GeV(2)/c(4) is measured to be 0.745(-0.074)(+0.090)(stat) ± 0.036(syst). This value is the most precise measurement of the ratio of branching fractions to date and is compatible with the standard model prediction within 2.6 standard deviations.
利用质子 - 质子碰撞数据给出了B(+) → K(+)μ(+)μ(-)和B(+) → K(+)e(+)e(-)衰变分支比的比值测量结果，该数据对应于质心能量为7和8 TeV时LHCb实验记录的3.0 fb(-1)的积分亮度。对于双轻子不变质量平方范围1 < q(2) < 6 GeV(2)/c(4)，测量得到的分支比比值为0.745(-0.074)(+0.090)(统计) ± 0.036(系统)。该值是迄今为止对分支比比值最精确的测量，并且在2.6个标准差内与标准模型预测相符。
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