تقرير
Accurate prediction of the $\phi^{*}_{\eta}$ distribution for the forward Z boson production in pp collisions through NNLO+N$^{3}$LL
| العنوان: | Accurate prediction of the $\phi^{*}_{\eta}$ distribution for the forward Z boson production in pp collisions through NNLO+N$^{3}$LL |
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| المؤلفون: | Ocalan, Kadir |
| المصدر: | J. Korean Phys. Soc. 79 (2021) 130-137 |
| سنة النشر: | 2020 |
| المجموعة: | High Energy Physics - Phenomenology |
| مصطلحات موضوعية: | High Energy Physics - Phenomenology |
| الوصف: | This paper presents a phenomenological study for the differential cross section of the forward Z boson production in leptonic decay channels as a function of the angular variable $\phi^{*}_{\eta}$ in proton-proton collisions. The $\phi^{*}_{\eta}$ distribution is predicted for the forward pseudorapidity region $2.0 < \eta_{l} < 4.5$ of the decay leptons at center-of-mass energies 8, 13, and 14 TeV. Accurate prediction of the $\phi^{*}_{\eta}$ distribution is achieved by means of the state-of-the-art calculations including fixed-order perturbative QCD and large logarithmic corrections. The predicted distributions are obtained by employing the resummation either at next-to-next-to-leading logarithmic (NNLL) or next-to-NNLL (N$^{3}$LL) accuracy which is matched to the perturbative QCD calculation at next-to-next-to-leading order (NNLO) accuracy, that is at NNLO+NNLL and NNLO+N$^{3}$LL, respectively. The Z boson $\phi^{*}_{\eta}$ variable is experimentally preferable as it has been measured more precisely than the Z boson transverse momentum though both variables probe the same physics, thereby an accurate description of the $\phi^{*}_{\eta}$ variable is required by using theoretical predictions at both NNLO+NNLL and NNLO+N$^{3}$LL accuracies. The matched predictions are compared with the available 8 TeV and 13 TeV measurements by the LHCb experiment at the LHC and found to be in good agreement. The 14 TeV predicted distributions at both NNLO+NNLL and NNLO+N$^{3}$LL are also reported. In all the predicted results, the NNLO+N$^{3}$LL provides more improved accuracy for the reliable description of the $\phi^{*}_{\eta}$ distribution throughout its entire phase space region. Comment: 16 pages, 10 figures, 2 tables |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1007/s40042-021-00200-4 |
| URL الوصول: | http://arxiv.org/abs/2012.15139 |
| رقم الأكسشن: | edsarx.2012.15139 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1007/s40042-021-00200-4 |
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