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QCD corrections to Higgs boson production and $H \to b \bar{b}$ decay in weak boson fusion
/ Asteriadis, Konstantin (Regensburg U.) ; Behring, Arnd (CERN) ; Melnikov, Kirill (KIT, Karlsruhe, TTP) ; Novikov, Ivan (KIT, Karlsruhe, TTP) ; Röntsch, Raoul (INFN, Milan ; Milan U.)
We study QCD corrections to the process where a Higgs boson is produced in weak boson fusion and then decays into a pair of massive $b$ quarks. We find that typical experimental criteria used to identify $b$ jets in this process affect QCD corrections to the decay, making it necessary to account for them in the proper description of this process. [...]
arXiv:2407.09363; TTP24-019; P3H-24-040; CERN-TH-2024-095; TIF-UNIMI-2024-5.-
2024-09-01 - 12 p.
- Published in : Phys. Rev. D 110 (2024) 054017
Fulltext: 2407.09363 - PDF; Publication - PDF;
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Estimating the impact of mixed QCD-electroweak corrections on the $W$-mass determination at the LHC
/ Behring, Arnd (KIT, Karlsruhe, TP) ; Buccioni, Federico (Oxford U., Theor. Phys.) ; Caola, Fabrizio (Oxford U., Theor. Phys.) ; Delto, Maximilian (KIT, Karlsruhe, TP) ; Jaquier, Matthieu (KIT, Karlsruhe, TP) ; Melnikov, Kirill (KIT, Karlsruhe, TP) ; Röntsch, Raoul (CERN)
We study the impact of the recently computed mixed QCD-electroweak corrections to the production of $W$ and $Z$ bosons at the LHC on the value of the $W$ mass extracted from the transverse momentum distribution of charged leptons from $W$ decays. Using the average lepton transverse momenta in $W$ and $Z$ decays as simplified observables for the determination of the $W$ mass, we estimate that mixed QCD-electroweak corrections can shift the extracted value of the $W$ mass by up to ${\cal O}(20)~{\rm MeV}$, depending on the kinematic cuts employed to define fiducial cross sections for $Z$ and $W$ production. [...]
arXiv:2103.02671.-
2021-06-07 - 6 p.
- Published in : Phys. Rev. D 103 (2021) 113002
Article from SCOAP3: PDF; Fulltext: PDF;
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Four-lepton production in gluon fusion at NLO matched to parton showers
/ Alioli, Simone (Milan Bicocca U.) ; Ferrario Ravasio, Silvia (Oxford U., Theor. Phys.) ; Lindert, Jonas M. (Sussex U., Astron. Ctr.) ; Röntsch, Raoul (CERN)
We present a calculation of the next-to-leading order (NLO) QCD corrections to gluon-induced electroweak gauge boson pair production, $gg \to ZZ$ and $gg \to W^+W^-$, matched to the PYTHIA8 parton shower in the POWHEG approach. The calculation consistently incorporates the continuum background, the Higgs-mediated $gg\to H^* \to VV$ process, and their interference. [...]
arXiv:2102.07783; IPPP/20/79; CERN-TH-2021-022.-
2021-08-03 - 15 p.
- Published in : Eur. Phys. J. C 81 (2021) 687
Fulltext: document - PDF; 2102.07783 - PDF;
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Mixed QCD-electroweak corrections to W-boson production in hadron collisions
/ Behring, Arnd (KIT, Karlsruhe, TTP) ; Buccioni, Federico (Oxford U., Theor. Phys.) ; Caola, Fabrizio (Oxford U., Theor. Phys. ; Oxford U.) ; Delto, Maximilian (KIT, Karlsruhe, TTP) ; Jaquier, Matthieu (KIT, Karlsruhe, TTP) ; Melnikov, Kirill (KIT, Karlsruhe, TTP) ; Röntsch, Raoul (CERN)
We compute mixed QCD-electroweak corrections to the fully-differential production of an on-shell $W$ boson. Decays of $W$ bosons to lepton pairs are included in the leading order approximation. [...]
arXiv:2009.10386; TTP20-033; P3H-20-048; OUTP-20-09P; CERN-TH-2020-152.-
2021-01-28 - 40 p.
- Published in : Phys. Rev. D 103 (2021) 013008
Article from SCOAP3: PDF; Fulltext: PDF;
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Mixed QCD-electroweak corrections to on-shell Z production at the LHC
/ Buccioni, Federico (Oxford U., Theor. Phys.) ; Caola, Fabrizio (Oxford U., Theor. Phys. ; Oxford U.) ; Delto, Maximilian (KIT, Karlsruhe, TTP) ; Jaquier, Matthieu (KIT, Karlsruhe, TTP) ; Melnikov, Kirill (KIT, Karlsruhe, TTP) ; Röntsch, Raoul (CERN)
We present the first complete calculation of mixed QCD-electroweak corrections to the production of on-shell $Z$ bosons in hadron collisions and their decays to massless charged leptons. Our computation is fully differential with respect to final state QCD partons and resolved photons, allowing us to compute any infra-red safe observable pertinent to the $pp \to Z \to l^+ l^-$ process in the approximation that the $Z$ boson is on shell. [...]
arXiv:2005.10221; OUTP-20-04P,TTP20-021; P3H-20-019; CERN-TH-2020-072.-
2020-12-10 - 6 p.
- Published in : Phys. Lett. B 811 (2020) 135969
Article from SCOAP3: PDF; Fulltext: PDF;
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