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We compute the contributions to the N3LO inclusive Higgs boson cross-section from the square of one-loop amplitudes with a Higgs boson and three QCD partons as external states. Our result is a Taylor expansion in the dimensional regulator…

High Energy Physics - Phenomenology · Physics 2015-06-17 Charalampos Anastasiou , Claude Duhr , Falko Dulat , Franz Herzog , Bernhard Mistlberger

We present methods to compute higher orders in the threshold expansion for the one-loop production of a Higgs boson in association with two partons at hadron colliders. This process contributes to the N$^3$LO Higgs production cross section…

High Energy Physics - Phenomenology · Physics 2015-09-30 Charalampos Anastasiou , Claude Duhr , Falko Dulat , Elisabetta Furlan , Franz Herzog , Bernhard Mistlberger

We compute the NLO virtual corrections to the partonic cross section of $gg\to HH$, in the high energy limit. Finite Higgs boson mass effects are taken into account via an expansion which is shown to converge quickly. We obtain analytic…

High Energy Physics - Phenomenology · Physics 2019-02-20 Joshua Davies , Go Mishima , Matthias Steinhauser , David Wellmann

We compute the real-radiation corrections to Higgs boson pair production at next-to-next-to-leading order in QCD, in an expansion for large top quark mass. We concentrate on the radiative corrections to the interference contribution from…

High Energy Physics - Phenomenology · Physics 2019-06-26 Joshua Davies , Florian Herren , Go Mishima , Matthias Steinhauser

We present partonic contributions to the inclusive gluon-fusion Higgs boson and Drell-Yan production cross sections at Hadron colliders at next-to-next-to-next-to-next-to leading order (N$^4$LO). Specifically, we compute contributions due…

High Energy Physics - Phenomenology · Physics 2025-04-16 Bernhard Mistlberger , Adi Suresh

We present several key steps towards the computation of differential Higgs boson cross sections at N$^3$LO in perturbative QCD. Specifically, we work in the framework of Higgs-differential cross sections that allows to compute precise…

High Energy Physics - Phenomenology · Physics 2018-03-14 Falko Dulat , Bernhard Mistlberger , Andrea Pelloni

We present one-loop contributions to the fully differential Higgs boson gluon-fusion cross-section for Higgs production via gluon fusion. Our results constitute a necessary ingredient of a complete N$^3$LO determination of the…

High Energy Physics - Phenomenology · Physics 2019-06-05 Charalampos Anastasiou , Caterina Specchia

We present the two first terms in the threshold expansion of Higgs production partonic cross-sections at hadron colliders for processes with three partons in the final state. These are contributions to the inclusive Higgs cross-section in…

High Energy Physics - Phenomenology · Physics 2015-06-15 Charalampos Anastasiou , Claude Duhr , Falko Dulat , Bernhard Mistlberger

We consider the next-to-leading order QCD corrections to Higgs boson pair production, using our recent calculation of the form factors in the high-energy limit. We compute the virtual corrections to the partonic cross section, applying…

High Energy Physics - Phenomenology · Physics 2020-01-08 Joshua Davies , Gudrun Heinrich , Stephen P. Jones , Matthias Kerner , Go Mishima , Matthias Steinhauser , David Wellmann

The virtual corrections to the production cross section of a Standard Model Higgs boson are computed up to order \alpha_s^4. Using an effective Lagrangian for the limit M_t -> \infty, we evaluate the relevant massless two-loop vertex…

High Energy Physics - Phenomenology · Physics 2009-10-31 Robert V. Harlander

We present an analytic computation of the Higgs production cross section in the gluon fusion channel, which is differential in the components of the Higgs momentum and inclusive in the associated partonic radiation through NNLO in…

High Energy Physics - Phenomenology · Physics 2017-08-02 Falko Dulat , Simone Lionetti , Bernhard Mistlberger , Andrea Pelloni , Caterina Specchia

We consider the virtual corrections to the process $gg\to HH$ at NLO in the high energy limit and compute the corresponding planar master integrals in an expansion for small top quark mass. We provide details on the evaluation of the…

High Energy Physics - Phenomenology · Physics 2018-04-04 Joshua Davies , Go Mishima , Matthias Steinhauser , David Wellmann

We propose a new method to calculate analytically higher-order perturbative corrections and we apply it to the calculation of the two-loop virtual corrections to Higgs pair production through gluon fusion. The method is based on the…

High Energy Physics - Phenomenology · Physics 2018-11-26 Roberto Bonciani , Giuseppe Degrassi , Pier Paolo Giardino , Ramona Gröber

We compute the contribution to the total cross section for the inclusive production of a Standard Model Higgs boson induced by two quarks with different flavour in the initial state. Our calculation is exact in the Higgs boson mass and the…

High Energy Physics - Phenomenology · Physics 2015-08-05 Chihaya Anzai , Alexander Hasselhuhn , Maik Höschele , Jens Hoff , William Kilgore , Matthias Steinhauser , Takahiro Ueda

In this article, we compute the gluon fusion Higgs boson cross-section at N3LO through the second term in the threshold expansion. This calculation constitutes a major milestone towards the full N3LO cross section. Our result has the best…

High Energy Physics - Phenomenology · Physics 2014-11-14 Charalampos Anastasiou , Claude Duhr , Falko Dulat , Elisabetta Furlan , Thomas Gehrmann , Franz Herzog , Bernhard Mistlberger

The single-logarithmic enhancement of the physical kernel for Higgs production by gluon-gluon fusion in the heavy top-quark limit is employed to derive the leading so far unknown contributions, ln^{5,4,3}(1-z), to the N^3LO coefficient…

High Energy Physics - Phenomenology · Physics 2015-06-22 D. de Florian , J. Mazzitelli , S. Moch , A. Vogt

We consider the production of a Higgs boson via gluon-fusion and its decay into two photons. We compute the NLO virtual QCD corrections to these processes in a general framework in which the coupling of the Higgs boson to the external…

High Energy Physics - Phenomenology · Physics 2010-10-27 U. Aglietti , R. Bonciani , G. Degrassi , A. Vicini

The factorisation of QCD matrix elements in the limit of two external partons becoming collinear is described by process-independent splitting amplitudes, which can be expanded systematically in perturbation theory. Working in conventional…

High Energy Physics - Phenomenology · Physics 2015-06-23 Claude Duhr , Thomas Gehrmann , Matthieu Jaquier

We report on the calculation of virtual processes contributing to the production of a Higgs boson and two jets in hadron-hadron collisions. The coupling of the Higgs boson to gluons, via a virtual loop of top quarks, is treated using an…

High Energy Physics - Phenomenology · Physics 2014-11-18 R. K. Ellis , W. T. Giele , G. Zanderighi

We compute the next-to-leading virtual QCD corrections to the partonic cross section of the production of a Higgs boson in association with a $Z$ boson in gluon fusion. The calculation is based on the recently introduced method of…

High Energy Physics - Phenomenology · Physics 2023-01-11 Lina Alasfar , Giuseppe Degrassi , Pier Paolo Giardino , Ramona Gröber , Marco Vitti
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