1,721,069 research outputs found
Higgs working group report
No full textThis report summarizes the work of the Energy Frontier Higgs Boson working group of the 2013 Community Summer Study (Snowmass). We identify the key elements of a precision Higgs physics program and document the physics potential of future experimental facilities as elucidated during the Snowmass study. We study Higgs couplings to gauge boson and fermion pairs, double Higgs production for the Higgs self-coupling, its quantum numbers and -mixing in Higgs couplings, the Higgs mass and total width, and prospects for direct searches for additional Higgs bosons in extensions of the Standard Model. Our report includes projections of measurement capabilities from detailed studies of the Compact Linear Collider (CLIC), a Gamma-Gamma Collider, the International Linear Collider (ILC), the Large Hadron Collider High-Luminosity Upgrade (HL-LHC), Very Large Hadron Colliders up to 100 TeV (VLHC), a Muon Collider, and a Triple-Large Electron Positron Collider (TLEP)
Higgs Working Group Summary Report
No full textReport of the Higgs working group for the Workshop "Physics at TeV Colliders", Les Houches, France 8-18 June 1999. It contains 6 separate sections: 1. Measuring Higgs boson couplings at the LHC. 2. Higgs boson production at hadron colliders at NLO. 3. Signatures of Heavy Charged Higgs Bosons at the LHC. 4. Light stop effects and Higgs boson searches at the LHC. 5. Double Higgs production at TeV Colliders in the MSSM. 6. Programs and Tools for Higgs Bosons
The Higgs Working Group: Summary Report
No full textReport of the Higgs working group for the Workshop "Physics at TeVColliders", Les Houches, France 8-18 June 1999. It contains 6 separatesections: 1. Measuring Higgs boson couplings at the LHC. 2. Higgs boson production at hadron colliders at NLO. 3. Signatures of Heavy Charged Higgs Bosons at the LHC. 4. Light stop effects and Higgs boson searches at the LHC. 5. Double Higgs production at TeV Colliders in the MSSM. 6. Programs and Tools for Higgs Bosons
The Higgs Working Group: Summary Report (2001)
No full textReport of the Higgs working group for the Workshop `Physics at TeV Colliders', Les Houches, France, 21 May - 1 June 2001. It contains 7 separate sections: A. Theoretical Developments B. Higgs Searches at the Tevatron C. Experimental Observation of an invisible Higgs Boson at LHC D. Search for the Standard Model Higgs Boson using Vector Boson Fusion at the LHC E. Study of the MSSM channel A/H -> \tau \tau at the LHC F. Searching for Higgs Bosons in Production G. Studies of Charged Higgs Boson Signals for the Tevatron and the LHCReport of the Higgs working group for the Workshop `Physics at TeV Colliders', Les Houches, France, 21 May - 1 June 2001. It contains 7 separate sections: A. Theoretical Developments B. Higgs Searches at the Tevatron C. Experimental Observation of an invisible Higgs Boson at LHC D. Search for the Standard Model Higgs Boson using Vector Boson Fusion at the LHC E. Study of the MSSM channel at the LHC F. Searching for Higgs Bosons in Production G. Studies of Charged Higgs Boson Signals for the Tevatron and the LH
LHCHWG MSSM ROOT files
No full textThis Zenodo record stores the ROOT files generated by the MSSM subgroup of the LHC Higgs Working Group (LHCHWG) to publicly distribute the physics information required to properly interpret LHC measurements and searches in the context of a variety of MSSM scenarios.
The scenarios contained in this release are:
the six scenarios presented in Eur.Phys.J.C 79 (2019) 7, 617 (1808.07542 [hep-ph]);
the two heavy-SUSY/low-tb scenarios published in Eur.Phys.J.C 79 (2019) 3, 279 (1901.05933 [hep-ph]);
the three negative mu scenarios presented in Eur.Phys.J.C 80
(2020) 10, 916 (2005.14536 [hep-ph];
the hMSSM scenario introduced in JHEP 10 (2013) 028 (1304.1787 [hep-ph]).
For each scenario, three ROOT files are provided, corresponding to cross-sections computed at 8, 13 and 14 TeV.
For more information on the tools used to generate the predictions contained in the ROOT files, and on the structure of the ROOT files itself, we refer to the working group note LHCHWG-2021-001 (https://cds.cern.ch/record/2791954/).
For more information on the MSSM subgroup, please see the Twiki page at https://twiki.cern.ch/twiki/bin/view/LHCPhysics/LHCHWGMSSMNeutral.
Subscribe to [email protected] to receive the announce of the new releases, and for discussions.
For any issue, information or request, please contact Emanuele Bagnaschi at the following address: [email protected].
Changelog
04/07/2022
Replaced all the ROOT files corresponding to the scenarios where HDECAY is used (mh125,mh125lc,mh125ls,mh125muneg_1,mh125muneg_2,mh125muneg_3,mh123align) with new versions generated with an update version of HDECAY-6.61 that resolve an issue with the genuine SUSY-QCD contributions to the decay channels introduced in the original 6.61 release.
07/03/2022
Fixed various issues in the ROOT files of the MHH125 scenario
02/12/2021
First release on Zenodo;
Updated the hMSSM ROOT file to the same setup used for the other scenarios (latest version of SusHi; PDF4LHC15 recommendations; cross-sections from the matched results provided by the bbH WG; inclusion of reference SM histograms);
Added the cross sections for the VBF, Higgsstrahlung and ttH production processes for the three neutral Higgses and for the SM reference case;
Added mixing information of the neutral Higgs sector;
Added the trilinear self-coupling of the SM-like Higgs, and of a SM Higgs with the same (the latter at tree level and including the term);
Cleaned-up and reorganized the histograms with a more consistent naming;
Removed the decay due to theoretical issues;
Update to the HDECAY version 6.61 ( with electroweak 2-loop corrections proportional to and ; term in the hMSSM trilinear self-coupling)
LHCHWG MSSM ROOT files
No full textThis Zenodo record stores the ROOT files generated by the MSSM subgroup of the LHC Higgs Working Group (LHCHWG) to publicly distribute the physics information required to properly interpret LHC measurements and searches in the context of a variety of MSSM scenarios.
The scenarios contained in this release are:
the six scenarios presented in Eur.Phys.J.C 79 (2019) 7, 617 (1808.07542 [hep-ph]);
the two heavy-SUSY/low-tb scenarios published in Eur.Phys.J.C 79 (2019) 3, 279 (1901.05933 [hep-ph]);
the three negative mu scenarios presented in Eur.Phys.J.C 80
(2020) 10, 916 (2005.14536 [hep-ph];
the hMSSM scenario introduced in JHEP 10 (2013) 028 (1304.1787 [hep-ph]).
For each scenario, three ROOT files are provided, corresponding to cross-sections computed at 8, 13 and 14 TeV.
For more information on the tools used to generate the predictions contained in the ROOT files, and on the structure of the ROOT files itself, we refer to the working group note LHCHWG-2021-001 (https://cds.cern.ch/record/2791954/).
For more information on the MSSM subgroup, please see the Twiki page at https://twiki.cern.ch/twiki/bin/view/LHCPhysics/LHCHWGMSSMNeutral.
Subscribe to [email protected] to receive the announce of the new releases, and for discussions.
For any issue, information or request, please contact Emanuele Bagnaschi at the following address: [email protected].
Changelog
09/09/2023
Added missing ggF cross sections at 14 TeV for the hMSSM
04/07/2022
Replaced all the ROOT files corresponding to the scenarios where HDECAY is used (mh125,mh125lc,mh125ls,mh125muneg_1,mh125muneg_2,mh125muneg_3,mh123align) with new versions generated with an update version of HDECAY-6.61 that resolve an issue with the genuine SUSY-QCD contributions to the decay channels introduced in the original 6.61 release.
07/03/2022
Fixed various issues in the ROOT files of the MHH125 scenario
02/12/2021
First release on Zenodo;
Updated the hMSSM ROOT file to the same setup used for the other scenarios (latest version of SusHi; PDF4LHC15 recommendations; cross-sections from the matched results provided by the bbH WG; inclusion of reference SM histograms);
Added the cross sections for the VBF, Higgsstrahlung and ttH production processes for the three neutral Higgses and for the SM reference case;
Added mixing information of the neutral Higgs sector;
Added the trilinear self-coupling of the SM-like Higgs, and of a SM Higgs with the same (the latter at tree level and including the term);
Cleaned-up and reorganized the histograms with a more consistent naming;
Removed the decay due to theoretical issues;
Update to the HDECAY version 6.61 ( with electroweak 2-loop corrections proportional to and ; term in the hMSSM trilinear self-coupling)
Higgs Bosons and QCD Jets at Two Loops
Get PDFIn this thesis we present techniques for the calculation of two-loop integrals contributing to the virtual corrections to physical processes with three on-shell and one-off-shell external particles. First, we describe a set of basic tools that simplifyy the manipulation of complicated two-loop integrals. A technique for deriving helicity amplitudes with use of a set of projectors is demonstrated. Then we present an algorithm, introduced by Laporta, that helps reduce all possible two-loop integrals to a basic set of 'master integrals'. Subsequently, these master integrals are analytically evaluated by deriving and solving differential equations on the external scales of the process. Two-loop matrix elements and helicity amplitudes are calculated for the physical processes γ* → qqg and H → ggg respectively. Conventional Dimensional Regularization is used in the evaluation of Feynman diagrams. For both processes, the infrared singular behaviour is shown to agree with the one predicted by Catani
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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