scholarly journals Anomalous couplings in Higgs-boson pair production at approximate NNLO QCD

2021 ◽  
Vol 2021 (9) ◽  
Author(s):  
Daniel de Florian ◽  
Ignacio Fabre ◽  
Gudrun Heinrich ◽  
Javier Mazzitelli ◽  
Ludovic Scyboz
Keyword(s):  
Higgs Boson ◽  
Pair Production ◽  
Top Quark ◽  
Gluon Fusion ◽  
Effective Field ◽  
Boson Pair ◽  
Anomalous Couplings ◽  
Boson Pair Production ◽  
Coupling Parameters ◽  
The Impact

Abstract We combine NLO predictions with full top-quark mass dependence with approximate NNLO predictions for Higgs-boson pair production in gluon fusion, including the possibility to vary coupling parameters within a non-linear Effective Field Theory framework containing five anomalous couplings for this process. We study the impact of the anomalous couplings on various observables, and present Higgs-pair invariant-mass distributions at seven benchmark points characterising different mhh shape types. We also provide numerical coefficients for the approximate NNLO cross section as a function of the anomalous couplings at $$ \sqrt{s} $$ s = 14 TeV.

scholarly journals Full top quark mass dependence in Higgs boson pair production at NLO

2016 ◽  
Vol 2016 (10) ◽  
Author(s):  
S. Borowka ◽  
N. Greiner ◽  
G. Heinrich ◽  
S.P. Jones ◽  
M. Kerner ◽  
...  
Keyword(s):  
Higgs Boson ◽  
Pair Production ◽  
Top Quark ◽  
Quark Mass ◽  
Mass Dependence ◽  
Top Quark Mass ◽  
Boson Pair ◽  
Boson Pair Production ◽  
Quark Mass Dependence

scholarly journals Higgs boson pair production at NNLO with top quark mass effects

2018 ◽  
Vol 2018 (5) ◽  
Author(s):  
M. Grazzini ◽  
G. Heinrich ◽  
S. Jones ◽  
S. Kallweit ◽  
M. Kerner ◽  
...  
Keyword(s):  
Higgs Boson ◽  
Pair Production ◽  
Top Quark ◽  
Quark Mass ◽  
Top Quark Mass ◽  
Boson Pair ◽  
Boson Pair Production ◽  
Mass Effects

scholarly journals Higgs boson pair production via gluon fusion

1988 ◽  
Vol 309 (2) ◽  
pp. 282-294 ◽  
Author(s):  
E.W.N. Glover ◽  
J.J. van der Bij
Keyword(s):  
Higgs Boson ◽  
Pair Production ◽  
Gluon Fusion ◽  
Boson Pair ◽  
Boson Pair Production

scholarly journals Real-virtual corrections to Higgs boson pair production at NNLO: three closed top quark loops

2019 ◽  
Vol 2019 (5) ◽  
Author(s):  
Joshua Davies ◽  
Florian Herren ◽  
Go Mishima ◽  
Matthias Steinhauser
Keyword(s):  
Higgs Boson ◽  
Pair Production ◽  
Top Quark ◽  
Boson Pair ◽  
Boson Pair Production ◽  
Quark Loops

Higgs boson pair production from gluon fusion

1988 ◽  
Vol 203 (4) ◽  
pp. 457-461 ◽  
Author(s):  
Duane A. Dicus ◽  
Chung Kao ◽  
Scott S.D. Willenbrock
Keyword(s):  
Higgs Boson ◽  
Pair Production ◽  
Gluon Fusion ◽  
Boson Pair ◽  
Boson Pair Production

scholarly journals Search for nonresonant Higgs boson pair production in final states with two bottom quarks and two photons in proton-proton collisions at $$ \sqrt{s} $$ = 13 TeV

2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
A. M. Sirunyan ◽  
◽  
A. Tumasyan ◽  
W. Adam ◽  
T. Bergauer ◽  
...  
Keyword(s):  
Higgs Boson ◽  
Pair Production ◽  
Top Quark ◽  
Higgs Bosons ◽  
Final States ◽  
Boson Pair ◽  
Proton Proton ◽  
Proton Collisions ◽  
Boson Pair Production ◽  
Proton Proton Collisions

Abstract A search for nonresonant production of Higgs boson pairs via gluon-gluon and vector boson fusion processes in final states with two bottom quarks and two photons is presented. The search uses data from proton-proton collisions at a center-of-mass energy of $$ \sqrt{s} $$ s = 13 TeV recorded with the CMS detector at the LHC, corresponding to an integrated luminosity of 137 fb−1. No significant deviation from the background-only hypothesis is observed. An upper limit at 95% confidence level is set on the product of the Higgs boson pair production cross section and branching fraction into $$ \gamma \gamma \mathrm{b}\overline{\mathrm{b}} $$ γγ b b ¯ . The observed (expected) upper limit is determined to be 0.67 (0.45) fb, which corresponds to 7.7 (5.2) times the standard model prediction. This search has the highest sensitivity to Higgs boson pair production to date. Assuming all other Higgs boson couplings are equal to their values in the standard model, the observed coupling modifiers of the trilinear Higgs boson self-coupling κλ and the coupling between a pair of Higgs bosons and a pair of vector bosons c2V are constrained within the ranges −3.3 < κλ< 8.5 and −1.3 < c2V< 3.5 at 95% confidence level. Constraints on κλ are also set by combining this analysis with a search for single Higgs bosons decaying to two photons, produced in association with top quark-antiquark pairs, and by performing a simultaneous fit of κλ and the top quark Yukawa coupling modifier κt.

Sign in / Sign up

Export Citation Format

Share Document