A MEASUREMENT OF J PSI DECAY WIDTHS

Authors
BAI JZ CHEN GP CHEN HF CHEN SJ CHEN SM CHEN Y CHEN YB CHEN YQ CHENG BS CHENG ZD CUI HC CUI XZ DING HL DING WY DU ZZ FAN XL FANG J FANG WZ GAO CS GAO ML GAO SQ GAO WX GU JH GU SD GU WX GU YF GUO YN GUO YY HAN SW HAN Y HE J HE KR HE M HU GY HU HP HU T HU XQ HUANG DQ HUANG YZ JIANG CH JIN S JIN Y KANG SH KE ZJ LAI YF LAN HB LANG PF LI F LI J LI PQ LI Q LI QM LI RB LI W LI WD LI WG LI XN LIN SZ LIU HM LIU JH LIU Q LIU RG LIU Y LIU ZA LU JG LUO SQ MA AM MA DH MA EC MA JM MAO HS MAO ZP MENG XC NI HL NIE J PAN LJ QI ND QUE YK RONG G SHAO YY SHEN BW SHEN DL SHEN H SHEN XY SHENG HY SHI HZ SONG XF SUN F SUN HS TAN YP TANG SQ TONG GL WANG LS WANG LZ WANG M WANG P WANG PL WANG SM WANG TJ WANG YY WEI CL XI DM XIA XM XIE PP XIE XX XIE YG XU DZ XU RS XU ZQ XUE ST YAN J YAN WG YANG CM YANG CY YANG W YE MH YE SZ YU CS YU CX YU ZQ YUAN CZ ZHANG BY ZHANG CC ZHANG DH ZHANG HL ZHANG J ZHANG JW ZHANG LS ZHANG SQ ZHANG XY ZHANG Y ZHANG YY ZHUANG BA ZHAO DX ZHAO JW ZHAO M ZHAO PD ZHAO WH ZHAO WR ZHENG JP ZHENG LS ZHENG ZP ZHOU BQ ZHOU GP ZHOU HS ZHOU L ZHOU XF ZHOU YH ZHOU QM ZHU YC ZHU YS
Citation
Jz. Bai et al., A MEASUREMENT OF J PSI DECAY WIDTHS, Physics letters. Section B, 355(1-2), 1995, pp. 374-380
Citations number
25
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
355
Issue
1-2
Year of publication
1995
Pages
374 - 380
Database
ISI
SICI code
0370-2693(1995)355:1-2<374:AMOJPD>2.0.ZU;2-M
Abstract
The cross sections for e(+)e(-) --> hadrons, e(+)e(-), mu(+)mu(-) have been measured in the vicinity of the J/psi resonance using the BES de tector operated at BEPC. The partial widths for J/psi, to hadrons, ele ctrons, muons and the total width have been determined to be Gamma(h) = 74.1 +/- 8.1 keV, Gamma(e) = 5.14 +/- 0.39 keV, Gamma(mu) = 5.13 +/- 0.52 keV, and Gamma = 84.4 +/- 8.9 keV, respectively.