scholarly journals Collinear and soft-gluon corrections to Higgs production at next-to-next-to-next-to-leading order

2008 ◽  
Vol 77 (5) ◽  
Author(s):  
Nikolaos Kidonakis
Keyword(s):  
Higgs Production ◽  
Soft Gluon ◽  
Leading Order

scholarly journals Forward dijets in proton-nucleus collisions at next-to-leading order: the real corrections

2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
Edmond Iancu ◽  
Yair Mulian
Keyword(s):  
Cross Section ◽  
Soft Gluon ◽  
Effective Theory ◽  
Dglap Evolution ◽  
Leading Order ◽  
Final State ◽  
Dijet Production ◽  
The Real ◽  
First Case ◽  
Subsequent Publication

Abstract Using the CGC effective theory together with the hybrid factorisation, we study forward dijet production in proton-nucleus collisions beyond leading order. In this paper, we compute the “real” next-to-leading order (NLO) corrections, i.e. the radiative corrections associated with a three-parton final state, out of which only two are being measured. To that aim, we start by revisiting our previous results for the three-parton cross-section presented in [1]. After some reshuffling of terms, we deduce new expressions for these results, which not only look considerably simpler, but are also physically more transparent. We also correct several errors in this process. The real NLO corrections to inclusive dijet production are then obtained by integrating out the kinematics of any of the three final partons. We explicitly work out the interesting limits where the unmeasured parton is either a soft gluon, or the product of a collinear splitting. We find the expected results in both limits: the B-JIMWLK evolution of the leading-order dijet cross-section in the first case (soft gluon) and, respectively, the DGLAP evolution of the initial and final states in the second case (collinear splitting). The “virtual” NLO corrections to dijet production will be presented in a subsequent publication.

scholarly journals Analytical Method for Next-to-Leading-Order QCD Corrections to Double-Higgs Production

2018 ◽  
Vol 121 (16) ◽  
Author(s):  
Roberto Bonciani ◽  
Giuseppe Degrassi ◽  
Pier Paolo Giardino ◽  
Ramona Gröber
Keyword(s):  
Analytical Method ◽  
Higgs Production ◽  
Leading Order

scholarly journals Higgs production in gluon fusion at next-to-next-to-leading order QCD for finite top mass

2010 ◽  
Vol 66 (3-4) ◽  
pp. 359-372 ◽  
Author(s):  
Robert V. Harlander ◽  
Hendrik Mantler ◽  
Simone Marzani ◽  
Kemal J. Ozeren
Keyword(s):  
Gluon Fusion ◽  
Higgs Production ◽  
Leading Order ◽  
Top Mass

scholarly journals Higgs production in bottom-quark fusion: Matching beyond leading order

2016 ◽  
Vol 763 ◽  
pp. 190-196 ◽  
Author(s):  
Stefano Forte ◽  
Davide Napoletano ◽  
Maria Ubiali
Keyword(s):  
Bottom Quark ◽  
Higgs Production ◽  
Leading Order

scholarly journals On the impact of non-factorisable corrections in VBF single and double Higgs production

2020 ◽  
Vol 2020 (10) ◽  
Author(s):  
Frédéric A. Dreyer ◽  
Alexander Karlberg ◽  
Lorenzo Tancredi
Keyword(s):  
Vector Boson ◽  
Relative Size ◽  
Eikonal Approximation ◽  
Higgs Production ◽  
Leading Order ◽  
Scale Uncertainty ◽  
Before And After ◽  
Depth Study ◽  
Uncertainty Band ◽  
The Impact

Abstract We study the non-factorisable QCD corrections, computed in the eikonal approximation, to Vector-Boson Fusion single and double Higgs production and show the combined factorisable and non-factorisable corrections for both processes at $$ \mathcal{O}\left({\alpha}_s^2\right) $$ O α s 2 . We investigate the validity of the eikonal approximation with and without selection cuts, and carry out an in-depth study of the relative size of the non-factorisable next-to-next-to-leading order corrections compared to the factorisable ones. In the case of single Higgs production, after selection cuts are applied, the non-factorisable corrections are found to be mostly contained within the factorisable scale uncertainty bands. When no cuts are applied, instead, the non-factorisable corrections are slightly outside the scale uncertainty band. Interestingly, for double Higgs production, we find that both before and after applying cuts, non-factorisable corrections are enhanced compared to the single Higgs case. We trace this enhancement to the existence of delicate cancellations between the various leading-order Feynman diagrams, which are partly spoiled by radiative corrections. All contributions studied here have been implemented in proVBFH v1.2.0 and proVBFHH v1.1.0.

scholarly journals NEXT-TO-NEXT-TO-LEADING-ORDER SOFT-GLUON CORRECTIONS IN DIRECT PHOTON PRODUCTION

2004 ◽  
Vol 19 (01) ◽  
pp. 149-158 ◽  
Author(s):  
NIKOLAOS KIDONAKIS ◽  
J. F. OWENS
Keyword(s):  
Scale Dependence ◽  
Photon Production ◽  
Direct Photon ◽  
Experimental Results ◽  
Soft Gluon ◽  
Leading Order ◽  
Convergence Properties ◽  
Good Convergence ◽  
Order Calculation ◽  
Direct Photon Production

Previous work on soft-gluon resummation for direct photon production is extended to include additional subleading logarithmic terms through [Formula: see text] and some representative comparisons are made to experimental results from the E-706 and UA-6 Collaborations. The additional terms are small in magnitude, indicating good convergence properties to the level of accuracy calculated. The scale dependence remains much smaller than that of the next-to-leading-order calculation.

scholarly journals Higgs production via gluon–gluon fusion with finite top mass beyond next-to-leading order

2008 ◽  
Vol 800 (1-2) ◽  
pp. 127-145 ◽  
Author(s):  
Simone Marzani ◽  
Richard D. Ball ◽  
Vittorio Del Duca ◽  
Stefano Forte ◽  
Alessandro Vicini
Keyword(s):  
Gluon Fusion ◽  
Higgs Production ◽  
Leading Order ◽  
Top Mass
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