Search for direct single-photon production at large pT in photon-proton collisions at √s = 62.4 GeV
Search for direct single-photon production at large pT in photon-proton collisions at √s = 62.4 GeV
复制标题
在 √s = 62.4 GeV 的光子-质子碰撞中寻找大 pT 下的直接单光子产生
DOI：
10.1016/0370-2693(80)90836-9
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发表时间：
1980
影响因子：
4.4
通讯作者：
J. Wallace
中科院分区：
文献类型：
--
作者：
A. Angelis;R. Rusack;C. Papa;B. Blumenfeld;R. Cool;R. Vidal;B. Pope;L. Lederman;L. Camilleri;J. Linnemann;H. Besch;M. Tannenbaum;Z. Dimčovski;J. Singh;L. Lella;S. Pordes;T. Chapin;A. Segar;D. Levinthal;K. Young;R. Hollebeek;A. Smith;N. Phinney;C. Newman;J. Yelton;A. Rothenberg;J. Wallace
作为欧洲核子研究中心 ISR 光子-质子碰撞中大 pT 现象研究的一部分，已经对直接单光子产生进行了研究。通过测量单辐射长度厚转换器中样本的平均转换概率，将数据样本统计划分为与单光子一致的部分和由于中性强子的多光子衰变而产生的部分。对于 6 GeV/c < pT10 GeV/c，可归因于直接单光子产生的样本比例为 <γ/all> = 0.074 ± 0.012，对于 pT> 10 GeV/c，<γ/all> = 0.26 ± 0.04，两个值的附加系统不确定性均为 ±0.05。
As part of a study of large pTphenomena in photon-proton collisions at the CERN ISR, a search for direct single photon production has been performed. A statistical division of the data sample into the fraction consistent with single photon and the fraction due to multiphoton decays of neutral hadrons is accomplished by measuring the average conversion probability for the sample in a one radiation length thick converter. The fraction of the sample attributable to direct single photon production is 〈γ/all〉 = 0.074 ± 0.012 for 6 GeV/c < pT10 GeV/c, and 〈γ/all〉 = 0.26 ± 0.04 for pT> 10 GeV/c, with an additional systematic uncertainty of ±0.05 for both values.