CMS中2.76和7 TeV pp碰撞玻色-爱因斯坦关联的多维分析
Multidimensional analysis of Bose-Einstein correlations in pp collisions at 2.76 and 7 TeV in CMS
摘要：
本文报道了2.76和7 TeV pp碰撞中荷电强子的多维两粒子玻色-爱因斯坦关联函数，它们是对相对动量的不同分量，扩展了CMS的一维分析.这使得调查的扩展源访问的飞秒相关技术在不同的方向，揭示了更详细的图片，在这些碰撞中的发射源在增加能量。对平均横向动量kT的不同间隔和增加带电粒子倍增率Nch进行测量。在1-D，2-D和3-D的结果显示，随着kT的拟合半径参数的减少，而在所有情况下观察到一个明显的上升与Nch。此外，在两种能量下的拟合半径参数在（Nch，kT）的相同区间内显示出尺寸和行为的密切相似性。
英文摘要：
Multidimensional two-particle Bose-Einstein correlation functions of charged hadrons are reported for pp collisions at 2.76 and 7 TeV in terms of different components of the pair relative momentum, extending the previous one-dimensional (1-D) analyses of CMS. This allows for investigating the extension of the source accessible to the femtoscopic correlation technique in different directions, revealing a more detailed picture of the emitting source in these collisions at increasing energies. The measurements are performed for different intervals of the pair average transverse momentum, kT, and for increasing charged particle multiplicitiy, Nch. Results in 1-D, 2-D and 3-D show a decrease of the fit radius parameters with kT, whereas a clear rise with Nch is observed in all cases. In addition, the fit radius parameters at both energies show close similarity in size and behavior within the same intervals of (Nch,kT).
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