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

页码：218 / 224

页数：7

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