INCLUSIVE J/OMEGA, OMEGA(2S), AND B-QUARK PRODUCTION IN (P)OVER-BAR-P COLLISIONS AT ROOT-S = 1.8 TEV
INCLUSIVE J/OMEGA, OMEGA(2S), AND B-QUARK PRODUCTION IN (P)OVER-BAR-P COLLISIONS AT ROOT-S = 1.8 TEV
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DOI：
10.1103/physrevlett.69.3704
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发表时间：
1992-12-28
影响因子：
8.6
通讯作者：
ZUCCHELLI, S
中科院分区：
文献类型：
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作者：
ABE, F;AMIDEI, D;ZUCCHELLI, S
利用费米实验室对撞机探测器采集的2.6+/-0.2 pb-1的数据，研究了平方根s = 1.8 TeV下ppBAR碰撞中J/psi和psi（2S）的产生。在J/psi—> mu+mu-和psi（2S）—> mu+mu-条件下，以P(T)为函数测量生产截面乘以分支分数的乘积。在运动范围P(T) bbb6 GeV/c和eta绝对值小于或等于0.5时，我们得到sigma(ppBAR—> J/psiX)B(J/psi—> mu+mu-) = 6.88+/-0.23(stat)-1.08(+0.93)(syst) nb, sigma(ppBAR—> psi(2S)X)B(psi（2S）—> mu+mu-) = 0.232+/-0.251(stat)-0.032(+0.029)(syst) nb。从这些值我们计算包涵b夸克产生截面。
Inclusive J/psi and psi(2S) production has been studied in ppBAR collisions at square-root s = 1.8 TeV using 2.6+/-0.2 pb-1 of data taken with the Collider Detector at Fermilab. The products of production cross section times branching fraction were measured as functions of P(T) for J/psi --> mu+mu- and psi(2S) --> mu+mu-. In the kinematic range P(T)>6 GeV/c and Absolute value of eta less-than-or-equal-to 0.5 we get sigma(ppBAR --> J/psiX)B(J/psi --> mu+mu-) = 6.88+/-0.23(stat)-1.08(+0.93)(syst) nb, and sigma(ppBAR --> psi(2S)X)B(psi(2S) --> mu+mu-) = 0.232+/-0.251(stat)-0.032(+0.029)(syst) nb. From these values we calculate the inclusive b-quark production cross section.