Observation of Bs0Bs0 oscillations

被引：325

作者：

Abulencia, A. ^{[1
]}

Adelman, J.

Affolder, T.

Akimoto, T.

Albrow, M. G.

Ambrose, D.

Amerio, S.

Amidei, D.

Anastassov, A.

Anikeev, K.

Annovi, A.

Antos, J.

Aoki, M.

Apollinari, G.

Arguin, J. -F.

Arisawa, T.

Artikov, A.

Ashmanskas, W.

Attal, A.

Azfar, F.

Azzi-Bacchetta, P.

Azzurri, P.

Bacchetta, N.

Badgett, W.

Barbaro-Galtieri, A.

Barnes, V. E.

Barnett, B. A.

Baroiant, S.

Bartsch, V.

Bauer, G.

Bedeschi, F.

Behari, S.

Belforte, S.

Bellettini, G.

Bellinger, J.

Belloni, A.

Benjamin, D.

Beretvas, A.

Beringer, J.

Berry, T.

Bhatti, A.

Binkley, M.

Bisello, D.

Blair, R. E.

Blocker, C.

Blumenfeld, B.

Bocci, A.

Bodek, A.

Boisvert, V.

Bolla, G.

机构：

[1] Univ Illinois, Urbana, IL 61801 USA

[2] Johns Hopkins Univ, Baltimore, MD 21218 USA

[3] Acad Sinica, Inst Phys, Taipei 11529, Taiwan

[4] Argonne Natl Lab, Argonne, IL 60439 USA

[5] Univ Autonoma Barcelona, Inst Fis Altes Energies, E-08193 Barcelona, Spain

[6] Baylor Univ, Waco, TX 76798 USA

[7] Univ Bologna, Ist Nazl Fis Nucl, I-40127 Bologna, Italy

[8] Brandeis Univ, Waltham, MA 02254 USA

[9] Univ Calif Davis, Davis, CA 95616 USA

[10] Univ Calif Los Angeles, Los Angeles, CA 90024 USA

[11] Univ Calif San Diego, La Jolla, CA 92093 USA

[12] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA

[13] Univ Cantabria, Inst Fis Cantabria, CSIC, E-39005 Santander, Spain

[14] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA

[15] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA

[16] Joint Inst Nucl Res, RU-141980 Dubna, Russia

[17] Duke Univ, Durham, NC 27708 USA

[18] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA

[19] Univ Florida, Gainesville, FL 32611 USA

[20] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

[21] Univ Geneva, CH-1211 Geneva 4, Switzerland

[22] Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland

[23] Harvard Univ, Cambridge, MA 02138 USA

[24] Univ Helsinki, Dept Phys, Div High Energy Phys, FIN-00014 Helsinki, Finland

[25] Helsinki Inst Phys, FIN-00014 Helsinki, Finland

[26] Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany

[27] High Energy Accelerator Res Org, KEK, Oho, Ibaraki 305, Japan

[28] Kyungpook Natl Univ, Ctr High Energy Phys, Taegu 702701, South Korea

[29] Seoul Natl Univ, Seoul 151742, South Korea

[30] Sungkyunkwan Univ, Suwon 440746, South Korea

[31] Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

[32] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England

[33] UCL, London WC1E 6BT, England

[34] Ctr Invest Energet Medioambientales & Tecnol, E-08040 Madrid, Spain

[35] MIT, Cambridge, MA 02139 USA

[36] McGill Univ, Inst Particle Phys, Montreal, PQ H3A 2T8, Canada

[37] Univ Toronto, Toronto, ON M5S 1A7, Canada

[38] Univ Michigan, Ann Arbor, MI 48109 USA

[39] Michigan State Univ, E Lansing, MI 48824 USA

[40] Inst Theoret & Expt Phys, Moscow 117259, Russia

[41] Univ New Mexico, Albuquerque, NM 87131 USA

[42] Northwestern Univ, Evanston, IL 60208 USA

[43] Ohio State Univ, Columbus, OH 43210 USA

[44] Okayama Univ, Okayama 7008530, Japan

[45] Osaka City Univ, Osaka 588, Japan

[46] Univ Oxford, Oxford OX1 3RH, England

[47] Univ Padua, Ist Nazl Fis Nucl, Sez Padova Trento, I-35131 Padua, Italy

[48] Univ Paris 06, CNRS, LPNHE, IN2P3,UMR 7585, F-75252 Paris, France

[49] Univ Penn, Philadelphia, PA 19104 USA

[50] Univ Pisa, Ist Nazl Fis Nucl, I-56127 Pisa, Italy

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 97卷 / 24期

基金：

英国科学技术设施理事会;

关键词：

D O I：

10.1103/PhysRevLett.97.242003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the observation of B(s)(0)-(B) over bar (0)(s) oscillations from a time-dependent measurement of the B(s)(0)-(B) over bar (0)(s) oscillation frequency Delta m(s). Using a data sample of 1 fb(-1) of p (p) over bar collisions at root s = 1.96 TeV collected with the CDF II detector at the Fermilab Tevatron, we find signals of 5600 fully reconstructed hadronic B(s) decays, 3100 partially reconstructed hadronic B(s) decays, and 61 500 partially reconstructed semileptonic B(s) decays. We measure the probability as a function of proper decay time that the B(s) decays with the same, or opposite, flavor as the flavor at production, and we find a signal for B(s)(0)-(B) over bar (0)(s) oscillations. The probability that random fluctuations could produce a comparable signal is 8x10(-8), which exceeds 5 sigma significance. We measure Delta m(s)=17.77 +/- 0.10(stat)+/- 0.07(syst) ps(-1) and extract vertical bar V(td)/V(ts)vertical bar=0.2060 +/- 0.0007(Delta m(s))(-0.0060)(+0.0081)(Delta m(d)+theor).

引用

页数：8

共 19 条

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