Measurement of the Ds+ lifetime -: art. no. 052003

被引：7
|
作者：
Link, JM [1 ]
Yager, PM
Anjos, JC
Bediaga, I
Castromonte, C
Machado, AA
Magnin, J
Massafferi, A
de Miranda, JM
Pepe, IM
Polycarpo, E
dos Reis, AC
Carrillo, S
Casimiro, E
Cuautle, E
Sánchez-Hernández, A
Uribe, C
Vázquez, F
Agostino, L
Cinquini, L
Cumalat, JP
O'Reilly, B
Segoni, I
Stenson, K
Butler, JN
Cheung, HWK
Chiodini, G
Gaines, I
Garbincius, PH
Garren, LA
Gottschalk, E
Kasper, PH
Kreymer, AE
Kutschke, R
Wang, M
Benussi, L
Bertani, M
Bianco, S
Fabbri, FL
Pacetti, S
Zallo, A
Reyes, M
Cawlfield, C
Kim, DY
Rahimi, A
Wiss, J
Gardner, R
Kryemadhi, A
Chung, YS
Kang, JS
机构：
[1] Univ Calif Davis, Davis, CA 95616 USA
[2] Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil
[3] CINVESTAV, Mexico City 07000, DF, Mexico
[4] Univ Colorado, Boulder, CO 80309 USA
[5] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA
[6] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy
[7] Univ Guanajuato, Guanajuato 37150, Mexico
[8] Univ Illinois, Urbana, IL 61801 USA
[9] Indiana Univ, Bloomington, IN 47405 USA
[10] Korea Univ, Seoul 136701, South Korea
[11] Kyungpook Natl Univ, Taegu 702701, South Korea
[12] Ist Nazl Fis Nucl, I-20133 Milan, Italy
[13] Univ Milan, I-20133 Milan, Italy
[14] Univ N Carolina, Asheville, NC 28804 USA
[15] Univ Pavia, Dipartimento Fis Nucl & Teor, I-27100 Pavia, Italy
[16] Ist Nazl Fis Nucl, I-27100 Pavia, Italy
[17] Pontificia Univ Catolica Rio de Janeiro, Rio De Janeiro, Brazil
[18] Univ Puerto Rico, Mayaguez, PR 00681 USA
[19] Univ S Carolina, Columbia, SC 29208 USA
[20] Univ Tennessee, Knoxville, TN 37996 USA
[21] Vanderbilt Univ, Nashville, TN 37235 USA
[22] Univ Wisconsin, Madison, WI 53706 USA
来源：
PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 05期
关键词：
D O I：
10.1103/PhysRevLett.95.052003
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A high statistics measurement of the D-s(+) lifetime from the Fermilab fixed-target FOCUS photoproduction experiment is presented. We describe the analysis of the two decay modes, D-s(+)->phi(1020)pi(+) and D-s(+)->(K) over bar*(892)K-0(+), used for the measurement. The measured lifetime is 507.4 +/- 5.5(stat)+/- 5.1(syst) fs using 8961 +/- 105 D-s(+)->phi(1020)pi(+) and 4680 +/- 90 D-s(+)->(K) over bar*(892)K-0(+) decays. This is a significant improvement over the present world average.
引用
收藏
页数：5
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