ORCID Profile
0000-0002-7506-3028
Current Organisation
Shandong University
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Publisher: Springer Science and Business Media LLC
Date: 03-2020
Abstract: The Higgs boson pair production via gluon fusion at high-energy hadron colliders, such as the LHC, is vital in deciphering the Higgs potential and in pinning down the electroweak symmetry breaking mechanism. We carry out the next-to-next-to-next-to- leading order (N 3 LO) QCD calculations in the infinite top-quark mass limit and present predictions for both the inclusive and differential cross sections, albeit the differential distributions other than the invariant mass distribution of the Higgs boson pair are approximated at N 3 LO. Such corrections are indispensable in stabilising the perturbative expansion of the cross section in the strong coupling α s . At the inclusive level, the scale uncertainties are reduced by a factor of four compared with the next-to-next-to-leading order (NNLO) results. Given that the inclusion of the top-quark mass effects is essential for the phenomenological applications, we use several schemes to incorporate the N 3 LO results in the infinite top-quark mass limit and the next-to-leading order (NLO) results with full top-quark mass dependence, and present theoretical predictions for the (differential) cross sections in the proton-proton collisions at the centre-of-mass energies $$ \\sqrt{s} $$ s = 13 , 14 , 27 and 100 TeV. Our results provide one of the most precise theoretical inputs for the analyses of the Higgs boson pair events.
Publisher: American Physical Society (APS)
Date: 18-11-2014
Publisher: Springer Science and Business Media LLC
Date: 08-2015
Publisher: Springer Science and Business Media LLC
Date: 22-08-2022
Abstract: We present the analytic results of one-loop squared litudes for tW production at a hadron collider. The calculation is performed using the method of differential equations. After renormalization, we have checked that the infrared ergences agree with the general structure predicted by anomalous dimensions. The finite remainder contributes to the next-to-next-to-leading order hard function, one of the essential gradients in the factorization formula of the cross section near the infrared region, which can be used in resummation of all-order soft gluon effects or a differential next-to-next-to-leading order calculation based on the phase space slicing method.
Publisher: Elsevier BV
Date: 02-2017
Publisher: Springer Science and Business Media LLC
Date: 02-2017
Publisher: Springer Science and Business Media LLC
Date: 07-2013
Publisher: Springer Science and Business Media LLC
Date: 11-07-2023
Abstract: We have calculated the complete two-loop QCD litudes for hadronic tW production by combining analytical and numerical techniques. The litudes have been first reduced to master integrals of eight planar and seven non-planar families, which can contain at most four massive propagators. Then a rational transformation of the master integrals is found to obtain a good basis so that the dimensional parameter decouples from the kinematic variables in the denominators of reduction coefficients. The master integrals are computed by solving their differential equations numerically. We find that the finite part of the two-loop squared litude is stable in the bulk of the phase space. After phase space integration and convolution with the parton distributions, it increases the LO cross section at the 13 TeV LHC by about 3%.
Publisher: American Physical Society (APS)
Date: 23-04-2018
Publisher: Springer Science and Business Media LLC
Date: 06-2019
Abstract: We calculate the soft-gluon corrections for tW production to all orders. The soft limit is defined in the pair invariant mass or one particle inclusive kinematic schemes. We find that at NLO the contribution of the soft-gluon effect dominates in the total cross section or the differential distributions. After resumming the soft-gluon effect to all orders using the renormalization group equation, we find that the NLO+NNLL results increase the NLO cross sections by 12% ∼ 17% depending on the scheme and the collider energy. Our results are in agreement with the measurements at the 8 and 13 TeV LHC. We also provide predictions for the total cross section at the 14 TeV LHC.
Publisher: Elsevier BV
Date: 09-2018
Publisher: American Physical Society (APS)
Date: 20-12-2012
Publisher: Sissa Medialab
Date: 02-10-2018
DOI: 10.22323/1.303.0021
Publisher: American Physical Society (APS)
Date: 16-11-2012
Publisher: Elsevier BV
Date: 04-2020
Publisher: American Physical Society (APS)
Date: 30-11-2022
No related grants have been discovered for Jian Wang.