在质心能量为1.8 TeV的质子-反质子碰撞中产生小角度μ子和底夸克。

Small-angle muon and bottom-quark production in p&pmacr; collisions at radicals = 1.8 TeV.

作者信息

Smith RP, Snihur R, Snow GR, Snow J, Snyder S, Solomon J, Song XF, Sosebee M, Sotnikova N, Souza M, Stanton NR, Steinbruck G, Stephens RW, Stevenson ML, Stichelbaut F, Stoker D, Stolin V, Stoyanova DA, Strauss M, Streets K, Strovink M, Sznajder A, Tamburello P, Tarazi J, Tartaglia M, Thomas TL

机构信息

New York University, New York, New York 10003, USA.

出版信息

Phys Rev Lett. 2000 Jun 12;84(24):5478-83. doi: 10.1103/PhysRevLett.84.5478.

DOI:10.1103/PhysRevLett.84.5478

PMID:10990974

Abstract

This Letter describes a measurement of the muon cross section originating from b-quark decay in the forward rapidity range 2.4<| y(&mgr;)|<3.2 in p&pmacr; collisions at sqrt[s] = 1.8 TeV. The data used in this analysis were collected by the D0 experiment at the Fermilab Tevatron. We find that next-to-leading-order QCD calculations underestimate b-quark production by a factor of 4 in the forward rapidity region.

摘要

本信函描述了在√s = 1.8 TeV的质子-反质子碰撞中，对前向快度范围2.4 < |y(μ)| < 3.2内源自b夸克衰变的μ子截面的测量。本分析中使用的数据是由费米实验室Tevatron的D0实验收集的。我们发现在前向快度区域，次领头阶量子色动力学计算低估了b夸克产生约4倍。