MEASUREMENT OF THE D-ASTERISK(+/-) CROSS-SECTION IN 2-PHOTON COLLISIONS AT LEP
ALEPH Collaboration
刊名PHYSICS LETTERS B
1995
卷号355期号:3-4页码:#REF!
学科分类Physics
DOI10.1016/0370-2693(95)00758-D
通讯作者BUSKULIC, D (reprint author), PHYS PARTICULES LAB, LAPP, IN2P3, CNRS, F-74019 ANNECY LE VIEUX, FRANCE.
文章类型Article
英文摘要The inclusive production of D*(+/-) mesons in photon-photon collisions has been measured by the Aleph experiment at LEP with a beam energy of 45 GeV. The D*(+) are detected in their decay to D-0 pi(+) with the D-0 observed in three separate decay modes: (1) K(-)pi(+), (2) K(-)pi(+)pi(0) and (3) K(-)pi(+)pi(-)pi(+), and analagously for the D*(-) modes. A total of 33 events was observed from an integrated luminosity of 73 pb(-1) which corresponds to a cross section for sigma(e(+)e(-) --> e(+)e(-)D*(+/-)X) of 155+/-33+/-21 pb, This result is compatible with both the direct production gamma gamma --> in the Born approximation and with a more complete calculation which includes both radiative QCD corrections and contributions in which one of the photons is first resolved into its quark and gluon constituents. The shapes of distributions for events containing a D*(+) are found to be better described by the latter.
类目[WOS]Physics, Multidisciplinary
收录类别SCI
WOS记录号WOS:A1995RN36300027
引用统计
被引频次:28[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/311005/227738
专题中国科学院高能物理研究所_实验物理中心_期刊论文
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ALEPH Collaboration. MEASUREMENT OF THE D-ASTERISK(+/-) CROSS-SECTION IN 2-PHOTON COLLISIONS AT LEP[J]. PHYSICS LETTERS B,1995,355(3-4):#REF!.
APA ALEPH Collaboration.(1995).MEASUREMENT OF THE D-ASTERISK(+/-) CROSS-SECTION IN 2-PHOTON COLLISIONS AT LEP.PHYSICS LETTERS B,355(3-4),#REF!.
MLA ALEPH Collaboration."MEASUREMENT OF THE D-ASTERISK(+/-) CROSS-SECTION IN 2-PHOTON COLLISIONS AT LEP".PHYSICS LETTERS B 355.3-4(1995):#REF!.
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