Comparison of inclusive fractional momentum distributions of quark and gluon jets produced ine+e− annihilation
Comparison of inclusive fractional momentum distributions of quark and gluon jets produced ine+e− annihilation
复制标题
夸克和胶子射流产生 ine+e− 湮灭的包含分数动量分布的比较
DOI：
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发表时间：
1989
期刊：
影响因子：
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通讯作者：
Tasso Collaboration
中科院分区：
文献类型：
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作者：
W. Braunschweig;R. Gerhards;F. J. Kirschfink;H. Martyn;B. Bock;H. Fischer;H. Hartmann;J. Hartmann;E. Hilger;A. Jocksch;R. Wedemeyer;B. Foster;A. Martin;E. Bernardi;J. Chwastowski;A. Eskreys;K. Gather;K. Genser;H. Hulschig;P. Joos;H. Kowalski;A. Ladage;B. Löhr;D. Lüke;P. Mättig;D. Notz;J. Pawlak;K. ;E. Ros;D. Trines;R. Walczak;G. Wolf;H. Kolanoski;T. Kracht;J. Krüger;E. Lohrmann;G. Poelz;W. Zeuner;J. Hassard;J. Shulman;D. Su;I. Tomalin;F. Barreiro;A. Leites;J. Peso;M. Bowler;P. Burrows;R. Cashmore;G. Heath;M. Veitch;J. Hart;D. Saxon;S. Brandt;M. Holder;Y. Eisenberg;U. Karshon;G. Mikenberg;A. Montag;D. Revel;E. Ronat;A. Shapira;N. Wainer;G. Yekutieli;D. Muller;S. Ritz;D. Strom;M. Takashima;S. Wu;G. Zobernig;Tasso Collaboration
用粒子分数动量xp研究了包含带电粒子产生和e−湮灭成强子的过程。通过比较TASSO探测器测量的两个数据样本，提取了胶子喷注的exp分布：质心能量为W <$35 GeV的近对称的三个喷注事件和W <$22 GeV的两个喷注事件，产生了能量相似（11.5 GeV）的夸克和胶子喷注。夸克喷注和胶子喷注之间没有明显的差别。基于部分子簇射的Monte Carlo模型比αs中的二阶矩阵元模型更好地描述了数据的趋势和能量变化。
Inclusive charged particle production ine+e− annihilation into hadrons is studied in terms of the particle fractional momentumxp. Thexp distribution for gluon jets is extracted by comparing two data samples measured in the TASSO detector: nearly symmetric three jet events at centre-of-mass energyW∼35 GeV and two jet events atW∼22 GeV, yielding quark and gluon jets of similar energies (∼11.5 GeV). No significant difference is observed between quark and gluon jets. Monte Carlo models based on parton showers describe the trend and energy variation of the data better than a model with second order matrix element in αs.