在味特定衰变道\(B_s^0→D_s^−μ^+νX\)中测量\(B_s^0\)介子的寿命
Measurement of the B(s)(0) lifetime in the flavor-specific decay channel B(s)(0)→D(s)(-)μ(+)νX.
作者信息
Abazov V M, Abbott B, Acharya B S, Adams M, Adams T, Agnew J P, Alexeev G D, Alkhazov G, Alton A, Askew A, Atkins S, Augsten K, Avila C, Badaud F, Bagby L, Baldin B, Bandurin D V, Banerjee S, Barberis E, Baringer P, Bartlett J F, Bassler U, Bazterra V, Bean A, Begalli M, Bellantoni L, Beri S B, Bernardi G, Bernhard R, Bertram I, Besançon M, Beuselinck R, Bhat P C, Bhatia S, Bhatnagar V, Blazey G, Blessing S, Bloom K, Boehnlein A, Boline D, Boos E E, Borissov G, Borysova M, Brandt A, Brandt O, Brock R, Bross A, Brown D, Bu X B, Buehler M, Buescher V, Bunichev V, Burdin S, Buszello C P, Camacho-Pérez E, Casey B C K, Castilla-Valdez H, Caughron S, Chakrabarti S, Chan K M, Chandra A, Chapon E, Chen G, Cho S W, Choi S, Choudhary B, Cihangir S, Claes D, Clutter J, Cooke M, Cooper W E, Corcoran M, Couderc F, Cousinou M-C, Cutts D, Das A, Davies G, de Jong S J, De La Cruz-Burelo E, Déliot F, Demina R, Denisov D, Denisov S P, Desai S, Deterre C, DeVaughan K, Diehl H T, Diesburg M, Ding P F, Dominguez A, Dubey A, Dudko L V, Duperrin A, Dutt S, Eads M, Edmunds D, Ellison J, Elvira V D, Enari Y, Evans H, Evdokimov V N, Fauré A, Feng L, Ferbel T, Fiedler F, Filthaut F, Fisher W, Fisk H E, Fortner M, Fox H, Fuess S, Garbincius P H, Garcia-Bellido A, García-González J A, Gavrilov V, Geng W, Gerber C E, Gershtein Y, Ginther G, Gogota O, Golovanov G, Grannis P D, Greder S, Greenlee H, Grenier G, Gris Ph, Grivaz J-F, Grohsjean A, Grünendahl S, Grünewald M W, Guillemin T, Gutierrez G, Gutierrez P, Haley J, Han L, Harder K, Harel A, Hauptman J M, Hays J, Head T, Hebbeker T, Hedin D, Hegab H, Heinson A P, Heintz U, Hensel C, Heredia-De La Cruz I, Herner K, Hesketh G, Hildreth M D, Hirosky R, Hoang T, Hobbs J D, Hoeneisen B, Hogan J, Hohlfeld M, Holzbauer J L, Howley I, Hubacek Z, Hynek V, Iashvili I, Ilchenko Y, Illingworth R, Ito A S, Jabeen S, Jaffré M, Jayasinghe A, Jeong M S, Jesik R, Jiang P, Johns K, Johnson E, Johnson M, Jonckheere A, Jonsson P, Joshi J, Jung A W, Juste A, Kajfasz E, Karmanov D, Katsanos I, Kaur M, Kehoe R, Kermiche S, Khalatyan N, Khanov A, Kharchilava A, Kharzheev Y N, Kiselevich I, Kohli J M, Kozelov A V, Kraus J, Kumar A, Kupco A, Kurča T, Kuzmin V A, Lammers S, Lebrun P, Lee H S, Lee S W, Lee W M, Lei X, Lellouch J, Li D, Li H, Li L, Li Q Z, Lim J K, Lincoln D, Linnemann J, Lipaev V V, Lipton R, Liu H, Liu Y, Lobodenko A, Lokajicek M, Lopes de Sa R, Luna-Garcia R, Lyon A L, Maciel A K A, Madar R, Magaña-Villalba R, Malik S, Malyshev V L, Mansour J, Martínez-Ortega J, McCarthy R, McGivern C L, Meijer M M, Melnitchouk A, Menezes D, Mercadante P G, Merkin M, Meyer A, Meyer J, Miconi F, Mondal N K, Mulhearn M, Nagy E, Narain M, Nayyar R, Neal H A, Negret J P, Neustroev P, Nguyen H T, Nunnemann T, Orduna J, Osman N, Osta J, Pal A, Parashar N, Parihar V, Park S K, Partridge R, Parua N, Patwa A, Penning B, Perfilov M, Peters Y, Petridis K, Petrillo G, Pétroff P, Pleier M-A, Podstavkov V M, Popov A V, Prewitt M, Price D, Prokopenko N, Qian J, Quadt A, Quinn B, Ratoff P N, Razumov I, Ripp-Baudot I, Rizatdinova F, Rominsky M, Ross A, Royon C, Rubinov P, Ruchti R, Sajot G, Sánchez-Hernández A, Sanders M P, Santos A S, Savage G, Savitskyi M, Sawyer L, Scanlon T, Schamberger R D, Scheglov Y, Schellman H, Schwanenberger C, Schwienhorst R, Sekaric J, Severini H, Shabalina E, Shary V, Shaw S, Shchukin A A, Simak V, Skubic P, Slattery P, Smirnov D, Snow G R, Snow J, Snyder S, Söldner-Rembold S, Sonnenschein L, Soustruznik K, Stark J, Stoyanova D A, Strauss M, Suter L, Svoisky P, Titov M, Tokmenin V V, Tsai Y-T, Tsybychev D, Tuchming B, Tully C, Uvarov L, Uvarov S, Uzunyan S, Van Kooten R, van Leeuwen W M, Varelas N, Varnes E W, Vasilyev I A, Verkheev A Y, Vertogradov L S, Verzocchi M, Vesterinen M, Vilanova D, Vokac P, Wahl H D, Wang M H L S, Warchol J, Watts G, Wayne M, Weichert J, Welty-Rieger L, Williams M R J, Wilson G W, Wobisch M, Wood D R, Wyatt T R, Xie Y, Yamada R, Yang S, Yasuda T, Yatsunenko Y A, Ye W, Ye Z, Yin H, Yip K, Youn S W, Yu J M, Zennamo J, Zhao T G, Zhou B, Zhu J, Zielinski M, Zieminska D, Zivkovic L
机构信息
Joint Institute for Nuclear Research, Dubna, Russia.
University of Oklahoma, Norman, Oklahoma 73019, USA.
出版信息
Phys Rev Lett. 2015 Feb 13;114(6):062001. doi: 10.1103/PhysRevLett.114.062001. Epub 2015 Feb 9.
We present an updated measurement of the B(s)(0) lifetime using the semileptonic decays B(s)(0)→D(s)(-)μ(+)νX, with D(s)(-)→ϕπ(-) and ϕ→K(+)K(-) (and the charge conjugate process). This measurement uses the full Tevatron Run II sample of proton-antiproton collisions at √[s]=1.96 TeV, comprising an integrated luminosity of 10.4 fb(-1). We find a flavor-specific lifetime τ(fs)(B(s)(0))=1.479±0.010(stat)±0.021(syst) ps. This technique is also used to determine the B(0) lifetime using the analogous B(0)→D(-)μ(+)νX decay with D(-)→ϕπ(-) and ϕ→K(+)K(-), yielding τ(B(0))=1.534±0.019(stat)±0.021(syst) ps. Both measurements are consistent with the current world averages, and the B(s)(0) lifetime measurement is one of the most precise to date. Taking advantage of the cancellation of systematic uncertainties, we determine the lifetime ratio τ(fs)(B(s)(0))/τ(B(0))=0.964±0.013(stat)±0.007(syst).
我们给出了使用半轻子衰变(B_s^0→D_s^−\mu^+\nu X)（其中(D_s^−→\phi\pi^−)且(\phi→K^+K^−)，以及电荷共轭过程）对(B_s^0)寿命的最新测量结果。该测量使用了在(\sqrt{s}=1.96) TeV下质子 - 反质子碰撞的完整Tevatron Run II样本，其积分亮度为(10.4) fb(^{-1})。我们得到味特定寿命(\tau_{fs}(B_s^0)=1.479±0.010)（统计）(±0.021)（系统）ps。该技术还用于通过类似的(B^0→D^−\mu^+\nu X)衰变（其中(D^−→\phi\pi^−)且(\phi→K^+K^−)）来确定(B^0)寿命，得到(\tau(B^0)=1.534±0.019)（统计）(±0.021)（系统）ps。这两个测量结果都与当前的世界平均值一致，并且(B_s^0)寿命测量是迄今为止最精确的测量之一。利用系统不确定性的抵消，我们确定寿命比(\tau_{fs}(B_s^0)/\tau(B^0)=0.964±0.013)（统计）(±0.007)（系统）。
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