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arXiv 1602.01110hep-phhep-ex
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小半径射流的包含射流谱

Inclusive jet spectrum for small-radius jets

Mrinal Dasgupta, Frédéric A. Dreyer, Gavin P. Salam, Gregory Soyez

摘要:

继我们早期的工作领先对数(LLR)的射流具有小半径,R的属性,我们在这里检查的包容性射流频谱的唯象考虑。我们讨论了如何匹配的NLO预测与小R重混。作为这项研究的一部分,我们提出了一个新的,物理启发处方的固定顺序的预测和他们的不确定性。我们调查的R-依赖的一部分,下一个下一个领先的顺序(NNLO)的修正,这被认为是实质性的,并评论的影响尺度选择包容性射流计算。我们还研究强子化校正,确定其$p_t$依赖性的早期分析工作的潜在局限性。最后,我们组装这些不同的元素,以比较匹配的(N)NLO+LLR预测的数据从ALICE和ATLAS,发现改进的一致性的R-依赖的结果相对于NLO预测。

英文摘要:

Following on our earlier work on leading-logarithmic (LLR) resummations for the properties of jets with a small radius, R, we here examine the phenomenological considerations for the inclusive jet spectrum. We discuss how to match the NLO predictions with small-R resummation. As part of the study we propose a new, physically-inspired prescription for fixed-order predictions and their uncertainties. We investigate the R-dependent part of the next-to-next-to-leading order (NNLO) corrections, which is found to be substantial, and comment on the implications for scale choices in inclusive jet calculations. We also examine hadronisation corrections, identifying potential limitations of earlier analytical work with regards to their $p_t$-dependence. Finally we assemble these different elements in order to compare matched (N)NLO+LLR predictions to data from ALICE and ATLAS, finding improved consistency for the R-dependence of the results relative to NLO predictions.

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。

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