MEASUREMENT OF THE BETA-MESON AND B-QUARK CROSS-SECTIONS AT ROOT-S = 1.8 TEV USING THE EXCLUSIVE DECAY BETA+/--]J/PSI-KAPPA+/-

被引：42

作者：

ABE, F

AMIDEI, D

APOLLINARI, G

ATAC, M

AUCHINCLOSS, P

BADEN, AR

BACCHETTA, N

BAILEY, MW

BAMBERGER, A

DEBARBARO, P

BARNETT, BA

BARBAROGALTIERI, A

BARNES, VE

BAUMANN, T

BEDESCHI, F

BEHRENDS, S

BELFORTE, S

BELLETTINI, G

BELLINGER, J

BENJAMIN, D

BENSINGER, J

BERETVAS, A

BERGE, JP

BERTOLUCCI, S

BHADRA, S

BINKLEY, M

BISELLO, D

BLAIR, R

BLOCKER, C

BODEK, A

BOLOGNESI, V

BOOTH, AW

BOSWELL, C

BRANDENBURG, G

BROWN, D

BUCKLEYGEER, E

BUDD, HS

BUSETTO, G

BYONWAGNER, A

BYRUM, KL

CAMPAGNARI, C

CAMPBELL, M

CANER, A

CAREY, R

CARITHERS, W

CARLSMITH, D

CARROLL, JT

CASHMORE, R

CASTRO, A

CERVELLI, F

机构：

[1] BRANDEIS UNIV,WALTHAM,MA 02254

[2] UNIV CHICAGO,CHICAGO,IL 60637

[3] FERMI NATL ACCELERATOR LAB,BATAVIA,IL 60510

[4] HARVARD UNIV,CAMBRIDGE,MA 02138

[5] JOHNS HOPKINS UNIV,BALTIMORE,MD 21218

[6] LAWRENCE BERKELEY LAB,BERKELEY,CA 94720

[7] TUFTS UNIV,MEDFORD,MA 02155

[8] IST NAZL FIS NUCL,LAB NAZL FRASCATI,FRASCATI,ITALY

[9] UNIV ILLINOIS,URBANA,IL 61801

[10] NATL LAB HIGH ENERGY PHYS,TSUKUBA,IBARAKI 305,JAPAN

[11] UNIV PENN,PHILADELPHIA,PA 19104

[12] PURDUE UNIV,W LAFAYETTE,IN 47907

[13] UNIV PADUA,IST NAZL FIS NUCL,I-35131 PADUA,ITALY

[14] UNIV PISA,I-56100 PISA,ITALY

[15] UNIV ROCHESTER,ROCHESTER,NY 14627

[16] UNIV WISCONSIN,MADISON,WI 53706

[17] UNIV TSUKUBA,TSUKUBA,IBARAKI 30031,JAPAN

[18] TEXAS A&I UNIV,KINGSVILLE,TX 78363

[19] IST NAZL FIS NUCL,PISA,ITALY

[20] ROCKEFELLER UNIV,NEW YORK,NY 10021

[21] SCUOLA NORMALE SUPER PISA,I-56100 PISA,ITALY

[22] RUTGERS STATE UNIV,NEW BRUNSWICK,NJ 08903

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 68卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.68.3403

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

This Letter reports the full reconstruction of B mesons through the decay chain B +/- --> J/psi-K +/-, J/psi --> mu+-mu-, using data obtained at thc Collider Detector at Fermilab in ppBAR collisions at square-root s = 1.8 TeV. This exclusive sample, the first observed at a hadron collider, is then used to measure the B-meson cross section, from which we extract the b-quark cross section. We obtain sigma = 2.8 +/- 0.9(stat) +/- 1.1 (syst) mu-b for B- mesons with P(T) > 9.0 GeV/c and rapidity \y\ < 1.0. We obtain sigma = 6.1 +/- 1.9(stat) +/- 2.4(syst) mu-b for b quarks with transverse momentum P(T) > 11.5 GeV/c and rapidity \y\ < 1.0.

引用

页码：3403 / 3407

页数：5

共 18 条

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