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Double-tag events in two-photon collisions at LEP
L3 Collaboration
2002
发表期刊PHYSICS LETTERS B
卷号531期号:1-2页码:#REF!
通讯作者Achard, P (reprint author), Univ Geneva, CH-1211 Geneva 4, Switzerland.
摘要Double-tag events in two-photon collisions are studied using the L3 detector at LEP centre-of-mass energies from roots = 189 GeV to 209 GeV The cross sections of the e(+)e(-) --> e(+)e(-) hadrons and gamma*gamma* --> hadrons processes are measured as a function of the product of the photon virtualities, Q(2) = rootQ(1)(2) Q(2)(2), of the two-phonon mass, W-gammagamma, and of the variable Y = ln(W-gammagamma(2)/Q(2)). The average photon virtuality is [Q(1)(2)] = [Q(2)(2)] = 16 GeV2. The results are in agreement with next-to-leading order calculations for the process gamma*gamma* --> q (q) over bar in the interval 2 less than or equal to Y less than or equal to 5. An excess is observed in the interval 5 < Y <= 7, corresponding to W-gamma gamma. greater than 40 GeV. This may be interpreted as a contribution of resolved photon QCD processes or the onset of BFKL phenomena. (C) 2002 Elsevier Science B.V. All rights reserved.
文章类型Article
学科领域Physics
DOI10.1016/S0370-2693(02)01340-0
收录类别SCI
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000175170400004
引用统计
被引频次:22[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/225673
专题粒子天体物理中心
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L3 Collaboration. Double-tag events in two-photon collisions at LEP[J]. PHYSICS LETTERS B,2002,531(1-2):#REF!.
APA L3 Collaboration.(2002).Double-tag events in two-photon collisions at LEP.PHYSICS LETTERS B,531(1-2),#REF!.
MLA L3 Collaboration."Double-tag events in two-photon collisions at LEP".PHYSICS LETTERS B 531.1-2(2002):#REF!.
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