arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 1602.00219hep-exhep-ph
收藏

低|t|和$\sqrt{s}$ = 8时pp弹性散射非指数微分截面的证据

Evidence for Non-Exponential Differential Cross-Section of pp Elastic Scattering at Low |t| and $\sqrt{s}$ = 8 TeV by TOTEM

T. Csörgő

摘要:

最近发表的TOTEM实验的初步结果,强调最近发现的非指数行为的微分截面的弹性质子-质子散射,TOTEM测量的质量中心的能量$\sqrt{s}$ = 8 TeV的基础上获得的高统计数据样本与欧洲核子研究中心大型强子对撞机的$β_* = 90$ m光学的TOTEM前所未有的精度。统计和系统不确定性均保持在1%以下,除了总体标准化的t独立贡献。这个测量使TOTEM排除了四动量转移平方0.027 < |t| < 0.2 GeV $^2$范围内的纯指数微分截面,其显著性大于7 $σ$。在这方面,我们还强调了创新的TOTEM重新校准LHC光学,使用弹性散射数据测量的世界上最大的和最复杂的罗马壶探测器系统,并讨论了最近的初步TOTEM数据的库仑核干涉区的物理意义。

英文摘要:

Recently published and preliminary results of the TOTEM experiment are presented, emphasizing a recent discovery of a non-exponential behaviour of the differential cross-section of elastic proton-proton scattering, that TOTEM measured with an unprecedented precision at the centre-of-mass energy $\sqrt{s}$ = 8 TeV based on a high-statistics data sample obtained with the $β_* = 90$ m optics of CERN LHC. Both the statistical and systematic uncertainties remained below 1%, except for the t-independent contribution from the overall normalisation. This measurement allowed TOTEM to exclude a purely exponential differential cross-section in the range of four-momentum transfer squared 0.027 < |t| < 0.2 GeV$^2$ with a significance greater than 7 $σ$. In this context we also highlight the innovative TOTEM recalibration of LHC optics, that used elastic scattering data measured by the world's largest and most complex Roman Pot detector system, and discuss recent preliminary TOTEM data on the Coulomb-Nuclear interference region with its physics implications.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑