Measurements of the Σc0 and Σc++ mass splittings

被引：10
|
作者：
Link, JM [1 ]
Paolone, VS
Reyes, M
Yager, PM
Anjos, JC
Bediaga, I
Göbel, C
Magnin, J
de Miranda, JM
Pepe, IM
dos Reis, AC
Simao, FRA
Carrillo, S
Casimiro, E
Mendez, H
Sánchez-Hernández, A
Uribe, C
Vazquez, F
Cinquini, L
Cumalat, JP
Ramirez, JE
O'Reilly, B
Vaandering, EW
Butler, JN
Cheung, HWK
Gaines, I
Garbincius, PH
Garren, LA
Gottschalk, E
Gourlay, SA
Kasper, PH
Kreymer, AE
Bianco, S
Fabbri, FL
Sarwar, S
Zallo, A
Cawlfield, C
Kutschke, R
Kim, DY
Park, KS
Rahimi, A
Wiss, J
Gardner, R
Chung, YS
Kang, JS
Ko, BR
Kwak, JW
Lee, KB
Myung, SS
Park, H
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] Fermi Natl Accelerator Lab, Batavia, IL 60510 USA
[6] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy
[7] Univ Illinois, Urbana, IL 61801 USA
[8] Indiana Univ, Bloomington, IN 47405 USA
[9] Korea Univ, Seoul 136701, South Korea
[10] Ist Nazl Fis Nucl, I-20133 Milan, Italy
[11] Univ Milan, Milan, Italy
[12] Univ N Carolina, Asheville, NC 28804 USA
[13] Dipartimento Fis Nucl & Teor, Pavia, Italy
[14] Ist Nazl Fis Nucl, I-27100 Pavia, Italy
[15] Univ Puerto Rico, Mayaguez, PR 00681 USA
来源：
PHYSICS LETTERS B | 2000年 / 488卷 / 3-4期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1016/S0370-2693(00)00867-4
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Using a high statistics sample of photoproduced charmed particles from the FOCUS experiment at Fermilab (FNAL-E831), we measure the mass splittings of the charmed baryons Sigma(c)(0) and Sigma(c)(++). We find M(Sigma(c)(0) - Lambda(c)) = 167.38 +/- 0.21 +/- 0.13 MeV/c(2) and M(Sigma(c)(++) - Lambda(c)(+)) = 167.35 +/- 0.19 +/- 0.12 MeV/c(2) with samples of 362 +/- 36 and 461 +/- 39 events, respectively. We measure the isospin mass splitting M(Sigma(c)(++) - Sigma(c)(0)) to be -0.03 +/- 0.28 +/- 0.11 MeV/c(2). The first errors are statistical and the second are systematic. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：218 / 224
页数：7
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