Search for Bs0-(Bs0)over-bar oscillations and a measurement of Bd0-(Bd0)over-bar oscillations using events with an inclusively reconstructed vertex

被引：0
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作者：
Abdallah, J
Abreu, P
Adam, W
Adzic, P
Albrecht, T
Alderweireld, T
Alemany-Fernandez, R
Allmendinger, T
Allport, PP
Amaldi, U
Amapane, N
Amato, S
Anashkin, E
Andreazza, A
Andringa, S
Anjos, N
Antilogus, P
Apel, WD
Arnoud, Y
Ask, S
Asman, B
Augustin, JE
Augustinus, A
Baillon, P
Ballestrero, A
Bambade, P
Barbier, R
Bardin, D
Barker, G
Baroncelli, A
Battaglia, M
Baubillier, M
Becks, KH
Begalli, M
Behrmann, A
Ben-Haim, E
Benekos, N
Benvenuti, A
Berat, C
Berggren, M
Berntzon, L
Bertrand, D
Besancon, M
Besson, N
Bloch, D
Blom, M
Bluj, M
Bonesini, M
Boonekamp, M
Booth, PSL
机构：
[1] Univ Paris 06, CNRS, IN2P3, LPNHE, F-75252 Paris 05, France
[2] Univ Paris 07, CNRS, IN2P3, LPNHE, F-75252 Paris, France
[3] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA
[4] Univ Antwerp, Dept Phys, B-2610 Wilrijk, Belgium
[5] VUB, ULB, IIHE, B-1050 Brussels, Belgium
[6] Univ Mons, Fac Sci, B-7000 Mons, Belgium
[7] Univ Athens, Phys Lab, GR-10680 Athens, Greece
[8] Univ Bergen, Dept Phys, N-5007 Bergen, Norway
[9] Univ Bologna, Dipartimento Fis, I-40126 Bologna, Italy
[10] Ist Nazl Fis Nucl, I-40126 Bologna, Italy
[11] Ctr Brasileiro Pesquisas Fis, BR-22290 Rio De Janeiro, Brazil
[12] Pontificia Univ Catolica Rio de Janeiro, Dept Fis, BR-22453 Rio De Janeiro, Brazil
[13] Univ Estadual Rio de Janeiro, Inst Fis, Rio De Janeiro, Brazil
[14] Coll France, CNRS, IN2P3, Phys Corpusculaire Lab, F-75231 Paris 05, France
[15] CERN, CH-1211 Geneva 23, Switzerland
[16] ULP, CNRS, IN2P3, Inst Rech Subatom, F-67037 Strasbourg, France
[17] NCSR Demokritos, Inst Nucl Phys, GR-15310 Athens, Greece
[18] CAS High Energy Phys Div, Inst Phys, FZU, Prague 8, Czech Republic
[19] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy
[20] Ist Nazl Fis Nucl, I-16146 Genoa, Italy
[21] Univ Grenoble 1, CNRS, IN2P3, Inst Sci Nucl, F-38026 St Martin Dheres, France
[22] HIP, Helsinki 00014, Finland
[23] Joint Inst Nucl Res Dubna, Moscow 101000, Russia
[24] Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany
[25] Inst Nucl Phys, PL-30055 Krakow, Poland
[26] Univ Min & Met Krakow, Fac Phys & Nucl Tech, PL-30055 Krakow, Poland
[27] Univ Paris 11, CNRS, IN2P3, Accelerateur Lineaire Lab, F-91405 Orsay, France
[28] Univ Lancaster, Sch Phys & Chem, Lancaster LA1 4YB, England
[29] FCUL, IST, LIP, P-1000 Lisbon, Portugal
[30] Univ Liverpool, Dept Phys, Liverpool L69 3BX, Merseyside, England
[31] Lund Univ, Dept Phys, S-22363 Lund, Sweden
[32] Univ Lyon 1, CNRS, IN2P3, IPNL, F-69622 Villeurbanne, France
[33] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy
[34] Ist Nazl Fis Nucl, MILANO, I-20133 Milan, Italy
[35] Univ Milan, Dipartimento Fis, I-20126 Milan, Italy
[36] Ist Nazl Fis Nucl, MILANO, I-20126 Milan, Italy
[37] Charles Univ, MFF, IPNP, Areal MFF, CR-18000 Prague 8, Czech Republic
[38] NIKHEF H, NL-1009 DB Amsterdam, Netherlands
[39] Natl Tech Univ Athens, Dept Phys, GR-15773 Athens, Greece
[40] Univ Oslo, Dept Phys, N-0316 Oslo, Norway
[41] Univ Oviedo, Dpto Fis, Oviedo 33007, Spain
[42] Univ Oxford, Dept Phys, Oxford OX1 3RH, England
[43] Univ Padua, Dipartimento Fis, I-35131 Padua, Italy
[44] Ist Nazl Fis Nucl, I-35131 Padua, Italy
[45] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England
[46] Univ Roma Tor Vergata, Dipartimento Fis, I-00173 Rome, Italy
[47] Ist Nazl Fis Nucl, I-00173 Rome, Italy
[48] Univ Rome 3, Dipartimento Fis, I-00146 Rome, Italy
[49] Ist Nazl Fis Nucl, I-00146 Rome, Italy
[50] CEA Saclay, DAPNIA, Serv Phys Particules, F-91191 Gif Sur Yvette, France
来源：
EUROPEAN PHYSICAL JOURNAL C | 2003年 / 28卷 / 02期
关键词：
D O I：
10.1140/epjc/s2003-01183-7
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
Neutral B meson oscillations in the B-s(0) - <(B-s(0))over bar>, and B-d(0) - <(B-d(0))over bar> systems were studied using a sample of about 4.0 million hadronic Z decays recorded by the DELPHI detector between 1992 and 2000. Events with a high transverse momentum lepton were removed and a sample of 770 k events with an inclusively reconstructed vertex was selected. The mass difference between the two physical states in the B-d(0) - <(B-d(0))over bar>system was measured to be: Deltam(d) = (0.531 +/- 0.025(stat.) +/- 0.007(syst.))ps(-1). The following limit on the width difference of these states was also obtained: \DeltaGamma(Bd)\/Gamma(Bd) < 0.18 at 95% CL. As no evidence for B-s(0) -<(B-s(0))over bar> oscillations was found, a limit on the mass difference of the two physical states was given:, Deltam(s) > 5.0 ps(-1) at 95% CL. The corresponding sensitivity of this analysis is equal to 6.6 ps(-1).
引用
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页码：155 / 173
页数：19
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