MEASUREMENT OF THE BRANCHING FRACTION OF D-S INCLUSIVE SEMILEPTONIC DECAY D-S(-]E(+)X())

Authors
BAI JZ BARDON O BIAN JG BLUM I BREAKSTONE A BURNETT T CHAI ZW CHEN GP CHEN HF CHEN J CHEN JC CHEN SM CHEN Y CHEN YB CHEN YQ CHENG BS COWAN RF CUI XZ DING HL DU ZZ DUNWOODIE W FAN XL FANG J FERO M GAO CS GAO ML GAO SQ GRATTON P GU JH GU SD GU WX GU YF GUO YN HAN SW HAN Y HARRIS FA HE J HE JT HE M HITLIN DG HU GY HU JL HU QH HU T HU XQ HUANG XP HUANG YZ IZEN JM JIA QP JIANG CH JIN S JIN Y JONES L KANG SH KE ZJ KELSEY MH KIM BK KONG D LAI YF LAN HB LANG PF LANKFORD A LI J LI PQ LI Q LI RB LI W LI WD LI WG LI XH LI XN LIN SZ LU F LIU HM LIU J LIU JH LIU Q LIU RG LIU Y LIU ZA LOU XC LOWERY B LU JG LU JY LUO SQ LUO Y MA AM MA EC MA JM MAO HS MAO ZP MALCHOW R MANDELKERN M MENG XC NI HL NIE J OLSEN SL OYANG J PALUSELLI D PAN LJ PANETTA J PORTER F PRABHAKAR E QI ND QIU JF QU YH QUE YK RONG G SCHERNAU M SCHMID B SCHULTZ J SHAO YY SHEN BW SHEN DL SHEN H SHEN XY SHENG HY SHI HZ SHI XR SODERSTROM E SONG XF STANDIFIRD J STOKER D SUN F SUN HS SUN SJ SYNODINOS J TAN YP TANG SQ TOKI W TONG GL WANG F WANG JF WANG LS WANG LZ WANG M WANG M WANG P WANG PL WANG SMM WANG TJ WANG YY WEAVER M WEI CL WISNIEWSKI WJ WU YG XI DM XIA XM XIE PP XIONG WJ XU DZ XU GF XU RS XU ZQ XUE ST YAN J YAN WG YANG CM YANG CY YANG H YANG J YANG W YANG XF YE MH YE SW YE SZ YI K YOUNG K YU CS YU CX YU ZQ YU ZT YUAN CZ ZHANG BY ZHANG CC ZHANG DH ZHANG DH ZHANG HL ZHANG J ZHANG JW ZHANG LS ZHANG L ZHANG QJ ZHANG SQ ZHANG XY ZHANG Y ZHANG YY ZHAO DX ZHAO HW ZHAO JW ZHAO M ZHAO WR ZHENG JP ZHENG LS ZHENG ZP ZHOU GP ZHOU HS ZHOU L ZHOU YH ZHU QM ZHU YC ZHU YS ZHUANG BA
Citation
Jz. Bai et al., MEASUREMENT OF THE BRANCHING FRACTION OF D-S INCLUSIVE SEMILEPTONIC DECAY D-S(-]E(+)X()), Physical review. D. Particles and fields, 56(7), 1997, pp. 3779-3782
Citations number
9
Categorie Soggetti
Physics, Particles & Fields
Journal title
Physical review. D. Particles and fields → ACNP
ISSN journal
05562821
Volume
56
Issue
7
Year of publication
1997
Pages
3779 - 3782
Database
ISI
SICI code
0556-2821(1997)56:7<3779:MOTBFO>2.0.ZU;2-Y
Abstract
The absolute inclusive semileptonic branching fraction of the D-s meso n has been measured based on 22.3 pb(-1) of e(+)e(-) collision data co llected with the Beijing Spectrometer at root s = 4.03 GeV. At this en ergy, the D-s are produced in pairs: e(+)e(-) --> Ds+Ds-. We reconstru cted 171 +/- 21 +/- 15 D-s events in five hadronic decay modes. In the recoil system of these events, several D-s inclusive semileptonic dec ays were observed and the branching fraction is estimated to be B(D-s( +) --> e(+) X) = (7.7(-4.3-2.1)(+5-7+2.4))%.