Observation of an excited charmed baryon decaying into Xi(c)(0)pi(+)

被引：59

作者：

Gibbons, L

Johnson, SD

Kwon, Y

Roberts, S

Thorndike, EH

Jessop, CP

Lingel, K

Marsiske, H

Perl, ML

Schaffner, SF

Wang, R

Coan, TE

Dominick, J

Fadeyev, V

Korolkov, I

Lambrecht, M

Sanghera, S

Shelkov, V

Stroynowski, R

Volobouev, I

Wei, G

Artuso, M

Efimov, A

Gao, M

Goldberg, M

He, D

Horwitz, N

Kopp, S

Moneti, GC

Mountain, R

Mukhin, Y

Playfer, S

Skwarnicki, T

Stone, S

Xing, X

Bartelt, J

Csorna, SE

Jain, V

Marka, S

Freyberger, A

Gibaut, D

Kinoshita, K

Pomianowski, P

Schrenk, S

Cinabro, D

Barish, B

Chadha, M

Chan, S

Eigen, G

Miller, JS

机构：

[1] STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94309

[2] SO METHODIST UNIV,DALLAS,TX 75275

[3] SYRACUSE UNIV,SYRACUSE,NY 13244

[4] VANDERBILT UNIV,NASHVILLE,TN 37235

[5] VIRGINIA POLYTECH INST & STATE UNIV,BLACKSBURG,VA 24061

[6] WAYNE STATE UNIV,DETROIT,MI 48202

[7] CALTECH,PASADENA,CA 91125

[8] UNIV CALIF SAN DIEGO,LA JOLLA,CA 92093

[9] UNIV CALIF SANTA BARBARA,SANTA BARBARA,CA 93106

[10] UNIV COLORADO,BOULDER,CO 80309

[11] CORNELL UNIV,ITHACA,NY 14853

[12] UNIV FLORIDA,GAINESVILLE,FL 32611

[13] HARVARD UNIV,CAMBRIDGE,MA 02138

[14] UNIV HAWAII MANOA,HONOLULU,HI 96822

[15] UNIV ILLINOIS,CHAMPAIGN URBANA,IL 61801

[16] CARLETON UNIV,OTTAWA,ON K1S 5B6,CANADA

[17] MCGILL UNIV,MONTREAL,PQ H3A 2T8,CANADA

[18] ITHACA COLL,ITHACA,NY 14850

[19] UNIV KANSAS,LAWRENCE,KS 66045

[20] UNIV MINNESOTA,MINNEAPOLIS,MN 55455

[21] SUNY ALBANY,ALBANY,NY 12222

[22] OHIO STATE UNIV,COLUMBUS,OH 43210

[23] UNIV OKLAHOMA,NORMAN,OK 73019

[24] PURDUE UNIV,W LAFAYETTE,IN 47907

[25] BINP,RU-630090 NOVOSIBIRSK,RUSSIA

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 77卷 / 05期

关键词：

D O I：

10.1103/PhysRevLett.77.810

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using data recorded by the CLEO II detector at the Cornell Electron Storage Ring, we report the first observation of an excited charmed baryon decaying into Xi c(0) pi(+). The state has mass difference M(Xi(c)(0) pi(+)) - M(Xi(c)(0)) of 174.3 +/- 0.5 +/- 1.0 MeV/c(2), and a width of <3.1 MeV/c(2) (90% confidence level limit). We identify the new state as the Xi(c)(*+), the isospin partner of the recently discovered Xi(c)(0*).

引用

页码：810 / 813

页数：4

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