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

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

页码：155 / 173

页数：19

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