Charged particle multiplicity distributions at 200 and 900 GeV c.m. energy
Charged particle multiplicity distributions at 200 and 900 GeV c.m. energy
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DOI：
10.1007/bf01506531
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发表时间：
1989-09
期刊：
影响因子：
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通讯作者：
R. Ansorge;B. Åsman;L. Burow;P. Carlson;R. S. Dewolf;B. Eckart;G. Ekspong;I. Evangelou;C. Fuglesang;C. Fuglesang;J. Gaudaen;C. Geich-Gimbel;B. Holl;K. Jon-And;F. Lotse;N. Manthos;D. Munday;W. Pelzer;J. G. Rushbrooke;F. Triantis;L. Hamme;C. Walck;C. Ward;D. Ward;C. J. Webber;T. White;G. Wilquet;N. Yamdagni
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文献类型：
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作者：
R. Ansorge;B. Åsman;L. Burow;P. Carlson;R. S. Dewolf;B. Eckart;G. Ekspong;I. Evangelou;C. Fuglesang;C. Fuglesang;J. Gaudaen;C. Geich-Gimbel;B. Holl;K. Jon-And;F. Lotse;N. Manthos;D. Munday;W. Pelzer;J. G. Rushbrooke;F. Triantis;L. Hamme;C. Walck;C. Ward;D. Ward;C. J. Webber;T. White;G. Wilquet;N. Yamdagni
本文给出了质心能量为200和900 GeV的质子与反质子非单衍射碰撞中产生的带电粒子多重数分布。这些数据记录在欧洲核子研究中心对撞机的UA5流光室中，该流光室在两种能量之间以脉冲模式运行。采用了一种新的方法，根据最大熵原理纠正接受限度和效率低下的问题。以表格形式给出了全相空间和赝快度区间的多重数分布。违反KNO标度在全相空间中发现的UA5组在能量为546 GeV的确认也在200和900 GeV。在全相空间中的900 GeV的分布的形状是窄的峰值区域比在200 GeV，但表现出明显的高多重性尾部。负二项分布拟合数据在200 GeV的所有伪快度间隔和小间隔在900 GeV。然而，在900 GeV的大间隔中，负二项分布。部分相干激光分布的拟合，以及与预测的双部分，Fritiof和Pythia模型的比较。
Multiplicity distributions of charged particles produced in non single-diffractive collisions between protons and antiprotons at centre of mass energies of 200 and 900 GeV are presented. The data were recorded in the UA5 streamer chambers at the CERN Collider, which was operated in a pulsed mode between the two energies. A new method to correct for acceptance limitations and inefficiencies based on the principle of maximum entropy has been used. Multiplicity distributions in full phase space and in intervals of pseudorapidity are presented in tabular form. The violation of KNO scaling in full phase space found by the UA5 group at an energy of 546 GeV is confirmed also at 200 and 900 GeV. The shape of the 900 GeV distribution in full phase space is narrower in the peak region than at 200 GeV but exhibits a pronounced high multiplicity tail. The negative binomial distribution fits data at 200 GeV in all pseudorapidity intervals and in small intervals at 900 GeV. In large intervals at 900 GeV, however, the negative binomial distribution. Fits to the partially coherent laser distribution are also presented as well as comparisons with predictions of the Dual Parton, the Fritiof and the Pythia models.