Results 31 to 40 of about 1,097 (138)
On phase-space integrals with Heaviside functions
Journal of High Energy Physics, 2022 We discuss peculiarities that arise in the computation of real-emission contributions to observables that contain Heaviside functions. A prominent example of such a case is the zero-jettiness soft function in SCET, whose calculation at next-to-next-to ...
Daniel Baranowski +3 more
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Transforming differential equations of multi-loop Feynman integrals into canonical form
Journal of High Energy Physics, 2017 The method of differential equations has been proven to be a powerful tool for the computation of multi-loop Feynman integrals appearing in quantum field theory.
Christoph Meyer
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Journal of High Energy Physics, 2020 We consider top-quark pair production at the LHC within the MS ¯ $$ \overline{\mathrm{MS}} $$ scheme for the renormalisation of the top-quark mass, and we present predictions for total and differential cross sections at next-to-next-to-leading order ...
Stefano Catani +4 more
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Investigating top tagging with Ym-Splitter and N-subjettiness
Journal of High Energy Physics, 2021 We study top-tagging from an analytical QCD perspective focussing on the role of two key steps therein: a step to find three-pronged substructure and a step that places constraints on radiation. For the former we use a recently introduced modification of
Mrinal Dasgupta, Jack Helliwell
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Precision phenomenology with MCFM
Journal of High Energy Physics, 2019 Without proper control of numerical and methodological errors in theoretical predictions at the per mille level it is not possible to study the effect of input parameters in current hadron-collider measurements at the required precision.
John Campbell, Tobias Neumann
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Diphoton production at the LHC: a QCD study up to NNLO
Journal of High Energy Physics, 2018 We consider the production of prompt-photon pairs at the LHC and we report on a study of QCD radiative corrections up to the next-to-next-to-leading order (NNLO). We present a detailed comparison of next-to-leading order (NLO) results obtained within the
Stefano Catani +4 more
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Zγ production at NNLO including anomalous couplings
Journal of High Energy Physics, 2017 In this paper we present a next-to-next-to-leading order (NNLO) QCD calculation of the processes pp → l + l −γ and pp→νν¯γ $$ pp\to \nu \overline{\nu}\gamma $$ that we have implemented in MCFM.
John M. Campbell +2 more
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Journal of High Energy Physics, 2021 In the paper, we present QCD predictions for γ + η c production at an electron-positron collider up to next-to-next-to-leading order (NNLO) accuracy without renormalization scale ambiguities. The NNLO total cross-section for e + + e − → γ + η c using the
Huai-Min Yu +5 more
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Journal of High Energy Physics, 2017 We study the transverse momentum spectrum of dilepton produced in the unpolarized π− N Drell-Yan process, using transverse momentum dependent factorization up to next-to-logarithmic order of QCD. We extract the nonperturbative Sudakov form factor for the
Xiaoyu Wang, Zhun Lu, Ivan Schmidt
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Rare two-body decays of the top quark into a bottom meson plus an up or charm quark
Journal of High Energy Physics, 2020 Rare two-body decays of the top quark into a neutral bottom-quark meson plus an up- or charm-quark: t → B ¯ 0 + u , c ; t → B ¯ s 0 + c , u $$ t\to {\overline{B}}^0+u,\kern0.5em c;t\to {\overline{B}}_s^0+c,\kern0.5em u $$ ; and t → ϒ(nS) + c, u, are ...
David d’Enterria, Hua-Sheng Shao
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