B<sub>s</sub><sup>0</sup>→K<sup>-</sup>μ<sup>+</sup>ν<sub>μ</sub>衰变的首次观测及|V<sub>ub</sub>|/|V<sub>cb</sub>|的测量
First Observation of the Decay B_{s}^{0}→K^{-}μ^{+}ν_{μ} and a Measurement of |V_{ub}|/|V_{cb}|.
作者信息
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, 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, 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 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, P K Resmi, 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 I T, 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 J, Ursov E, Usachov A, Ustyuzhanin A, Uwer U, Vagner A, Vagnoni V, Valassi A, Valenti G, Valls Canudas N, van Beuzekom M, Van Dijk M, van Herwijnen E, Van Hulse C B, van Veghel M, Vazquez Gomez R, Vazquez Regueiro P, Vázquez Sierra C, Vecchi S, Velthuis J J, Veltri M, Venkateswaran A, Veronesi M, Vesterinen M, Vieira D, Vieites Diaz M, Viemann H, Vilasis-Cardona X, Vilella Figueras E, Vincent P, Vitali G, Vollhardt A, Vom Bruch D, Vorobyev A, Vorobyev V, Voropaev N, Waldi R, Walsh J, Wang C, Wang J, Wang J, Wang J, Wang J, Wang M, Wang R, Wang Y, Wang Z, Wark H M, Watson N K, Weber S G, Websdale D, Weisser C, Westhenry B D C, White D J, Whitehead M, Wiedner D, Wilkinson G, Wilkinson M, Williams I, Williams M, Williams M R J, Wilson F F, Wislicki W, Witek M, Witola L, Wormser G, Wotton S A, Wu H, Wyllie K, Xiang Z, Xiao D, Xie Y, Xu A, Xu J, Xu L, Xu M, Xu Q, Xu Z, Xu Z, Yang D, Yang Y, Yang Z, Yang Z, Yao Y, Yeomans L 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
机构信息
Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands.
Physik-Institut, Universität Zürich, Zürich, Switzerland.
出版信息
Phys Rev Lett. 2021 Feb 26;126(8):081804. doi: 10.1103/PhysRevLett.126.081804.
The first observation of the suppressed semileptonic B_{s}^{0}→K^{-}μ^{+}ν_{μ} decay is reported. Using a data sample recorded in pp collisions in 2012 with the LHCb detector, corresponding to an integrated luminosity of 2 fb^{-1}, the branching fraction B(B_{s}^{0}→K^{-}μ^{+}ν_{μ}) is measured to be [1.06±0.05(stat)±0.08(syst)]×10^{-4}, where the first uncertainty is statistical and the second one represents the combined systematic uncertainties. The decay B_{s}^{0}→D_{s}^{-}μ^{+}ν_{μ}, where D_{s}^{-} is reconstructed in the final state K^{+}K^{-}π^{-}, is used as a normalization channel to minimize the experimental systematic uncertainty. Theoretical calculations on the form factors of the B_{s}^{0}→K^{-} and B_{s}^{0}→D_{s}^{-} transitions are employed to determine the ratio of the Cabibbo-Kobayashi-Maskawa matrix elements |V_{ub}|/|V_{cb}| at low and high B_{s}^{0}→K^{-} momentum transfer.
报道了对压低的半轻子(B_{s}^{0}→K^{-}μ^{+}ν_{μ})衰变的首次观测。利用2012年用大型强子对撞机底夸克探测器（LHCb探测器）在质子-质子碰撞中记录的数据样本，其对应于2(fb^{-1})的积分亮度，测得分支比(B(B_{s}^{0}→K^{-}μ^{+}ν_{μ}))为([1.06±0.05(统计)±0.08(系统)]×10^{-4})，其中第一个不确定度是统计性的，第二个表示组合的系统不确定度。衰变(B_{s}^{0}→D_{s}^{-}μ^{+}ν_{μ})（其中(D_{s}^{-})在末态(K^{+}K^{-}π^{-})中重建）用作归一化道，以最小化实验系统不确定度。利用对(B_{s}^{0}→K^{-})和(B_{s}^{0}→D_{s}^{-})跃迁形状因子的理论计算，来确定在低和高(B_{s}^{0}→K^{-})动量转移下卡比博-小林-益川（Cabibbo-Kobayashi-Maskawa）矩阵元(|V_{ub}|/|V_{cb}|)的比值。
Zotero 插件