Measurement of the B0-(B)over-bar0 oscillation frequency using π-B meson charge-flavor correlations in p(p)over-bar collisions at √s=1.8 TeV

被引：46

作者：

Abe, F ^{[1
]}

Akimoto, H

Akopian, A

Albrow, MG

Amadon, A

Amendolia, SR

Amidei, D

Antos, J

Aota, S

Apollinari, G

Arisawa, T

Asakawa, T

Ashmanskas, W

Atac, M

Azzi-Bacchetta, P

Bacchetta, N

Bagdasarov, S

Bailey, MW

de Barbaro, P

Barbaro-Galtieri, A

Barnes, VE

Barnett, BA

Barone, M

Bauer, G

Baumann, T

Bedeschi, F

Behrends, S

Belforte, S

Bellettini, G

Bellinger, J

Benjamin, D

Bensinger, J

Beretvas, A

Berge, JP

Berryhill, J

Bertolucci, S

Bettelli, S

Bevensee, B

Bhatti, A

Biery, K

Bigongiari, C

Binkley, M

Bisello, D

Blair, RE

Blocker, C

Blusk, S

Bodek, A

Bokhari, W

Bolla, G

Bonushkin, Y

机构：

[1] Natl Lab High Energy Phys, KEK, Tsukuba, Ibaraki 305, Japan

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

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

[4] Brandeis Univ, Waltham, MA 02254 USA

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

[6] Univ Chicago, Chicago, IL 60637 USA

[7] Duke Univ, Durham, NC 27708 USA

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

[9] Univ Florida, Gainesville, FL 32611 USA

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

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

[12] Harvard Univ, Cambridge, MA 02138 USA

[13] Hiroshima Univ, Higashihiroshima 724, Japan

[14] Univ Illinois, Urbana, IL 61801 USA

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

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

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

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

[19] Kek Nat Lab High Energy Phys, Ibaraki, Osaka 305, Japan

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

[21] MIT, Cambridge, MA 02139 USA

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

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

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

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

[26] Osaka City Univ, Osaka 588, Japan

[27] Univ Padua, Inst Nazl Fis Nucl, I-36132 Padua, Italy

[28] Univ Penn, Philadelphia, PA 19104 USA

[29] Univ Pisa, Ist Nazl Fis Nucl, I-56100 Pisa, Italy

[30] Scuola Normale Super Pisa, I-56100 Pisa, Italy

[31] Univ Pittsburgh, Pittsburgh, PA 15260 USA

[32] Purdue Univ, W Lafayette, IN 47907 USA

[33] Univ Rochester, Rochester, NY 14627 USA

[34] Rockefeller Univ, New York, NY 10021 USA

[35] Rutgers State Univ, Piscataway, NJ 08855 USA

[36] Acad Sinica, Taipei 11530, Taiwan

[37] Texas A&M Univ, College Stn, TX 77843 USA

[38] Texas Tech Univ, Lubbock, TX 79409 USA

[39] Univ Trieste, Ist Nazl Fis Nucl, Udine, Italy

[40] Univ Tsukuba, Tsukuba, Ibaraki 315, Japan

[41] Tufts Univ, Medford, MA 02155 USA

[42] Waseda Univ, Tokyo 169, Japan

[43] Univ Wisconsin, Madison, WI 53706 USA

[44] Yale Univ, New Haven, CT 06520 USA

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.80.2057

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a measurement of the B-0 <-> (B) over bar(0) oscillation frequency a flavor tagging method based on correlations of B meson flavor with the charge of other particles produced in <p(p)over bar> collisions at root s = 1.8 TeV. Such correlations are expected to arise from b quark hadronization and from B** decays. We partially reconstruct B mesons using the semileptonic decays B-0 --> l(+) D-(*-)X and B+ --> l(+)(D) over bar(0)X. From the oscillation frequency, we obtain the mass difference between the two B-0 mass eigenstates, Delta m(d) = 0.471(+0.068)(+0.078)(stat) +/- 0.034(syst)(h) over bar ps(-1), and measure the efficiency and purity of this flavor tagging method for both charged and neutral B mesons.

引用

页码：2057 / 2062

页数：6

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