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Reinterpretation of LHC Results for New Physics: Status and Recommendations after Run 2
/ Abdallah, Waleed (Harish-Chandra Res. Inst. ; Cairo U.) ; AbdusSalam, Shehu (Shahid Beheshti U.) ; Ahmadov, Azar (Baku State U.) ; Ahriche, Amine (ICTP, Trieste ; Algiers, Ecole Normale Superieure) ; Alguero, Gaël (LPSC, Grenoble) ; Allanach, Benjamin C. (Unlisted ; Cambridge U., DAMTP) ; Araz, Jack Y. (Concordia U., Montreal) ; Arbey, Alexandre (IP2I, Lyon ; CERN) ; Arina, Chiara (Louvain U., CP3) ; Athron, Peter (Monash U.) et al.
/LHC Reinterpretation Forum
We report on the status of efforts to improve the reinterpretation of searches and measurements at the LHC in terms of models for new physics, in the context of the LHC Reinterpretation Forum. We detail current experimental offerings in direct searches for new particles, measurements, technical implementations and Open Data, and provide a set of recommendations for further improving the presentation of LHC results in order to better enable reinterpretation in the future. [...]
arXiv:2003.07868; CERN-LPCC-2020-001; FERMILAB-FN-1098-CMS-T; Imperial/HEP/2020/RIF/01.-
2020-08-21 - 58 p.
- Published in : SciPost Phys. 9 (2020) 022
Fulltext: 2003.07868 - PDF; fermilab-fn-1098-cms-t - PDF; Fulltext from Publisher: PDF; External link: Fermilab Library Server (fulltext available)
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Adding Pseudo-Observables to the Four-Lepton Experimentalist's Toolbox
/ Gainer, James S. (Hawaii U.) ; González-Alonso, Martín (CERN) ; Greljo, Admir (U. Mainz, PRISMA ; Mainz U., Inst. Phys. ; Sarajevo U.) ; Isaković, Senad (Sarajevo U.) ; Isidori, Gino (Zurich U.) ; Korytov, Andrey (Florida U.) ; Lykken, Joseph (Fermilab) ; Marzocca, David (INFN, Trieste) ; Matchev, Konstantin T. (Florida U.) ; Milenović, Predrag (CERN) et al.
The "golden" channel, in which the newly-discovered Higgs boson decays to four leptons by means of intermediate vector bosons, is important for determining the properties of the Higgs boson and for searching for subtle new physics effects. Different approaches exist for parametrizing the relevant Higgs couplings in this channel; here we relate the use of pseudo-observables to methods based on specifying the most general amplitude or Lagrangian terms for the $HVV$ interactions. [...]
arXiv:1808.00965; CERN-TH-2018-178; FERMILAB-PUB-18-332-CD; UH-511-1255-18.-
2018-10-10 - 33 p.
- Published in : JHEP 10 (2018) 073
Article from SCOAP3: PDF; Fulltext: 1808.00965 - PDF; fermilab-pub-18-332-cd - PDF; External link: Fermilab Library Server (fulltext available)
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Identifying a new particle with jet substructures
/ Lim, Sung Hak (IBS, Daejeon, CTPU ; KAIST, Taejon) ; Han, Chengcheng (Tokyo U., IPMU) ; Kim, Doojin (U. Florida, Gainesville (main) ; CERN) ; Kim, Minho (POSTECH, Pohang ; IBS, Daejeon, CTPU) ; Kong, Kyoungchul (Pittsburgh U. ; Kansas U.) ; Park, Myeonghun (IBS, Daejeon, CTPU)
We investigate a potential of measuring properties of a heavy resonance X, exploiting jet substructure techniques. Motivated by heavy higgs boson searches, we focus on the decays of X into a pair of (massive) electroweak gauge bosons. [...]
arXiv:1609.06205; CTPU-16-19; IPMU16-0133; PITT-PACC-1608; CERN-TH-2016-218; CTPU-16-19; IPMU16-0133; PITT-PACC-1608.-
2017-01-09 - 33 p.
- Published in : JHEP 01 (2017) 027
Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: arXiv:1609.06205 - PDF; CERN-TH-2016-218 - PDF; Springer Open Access article: PDF;
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OPTIMASS: A Package for the Minimization of Kinematic Mass Functions with Constraints
/ Cho, Won Sang (Florida U. ; IBS, Daejeon, CTPU) ; Gainer, James S. (Florida U.) ; Kim, Doojin (Florida U.) ; Lim, Sung Hak (IBS, Daejeon, CTPU ; KAIST, Taejon) ; Matchev, Konstantin T. (Florida U.) ; Moortgat, Filip (CERN) ; Pape, Luc (CERN) ; Park, Myeonghun (APCTP, Pohang ; POSTECH, Pohang ; Tokyo U., IPMU)
Reconstructed mass variables, such as $M_2$, $M_{2C}$, $M_T^\star$, and $M_{T2}^W$, play an essential role in searches for new physics at hadron colliders. The calculation of these variables generally involves constrained minimization in a large parameter space, which is numerically challenging. [...]
arXiv:1508.00589; CTPU-15-09; APCTP-PRE2015-020; IPMU15-0115; CTPU-15-09; APCTP-PRE2015-020; IPMU15-0115.-
2016-01-07 - 38 p.
- Published in : JHEP 01 (2016) 026
Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF; Springer Open Access article: PDF;
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Invisible dark gauge boson search in top decays using a kinematic method
/ Kim, Doojin (Florida U.) ; Lee, Hye-Sung (CERN) ; Park, Myeonghun (APCTP, Pohang ; POSTECH, Pohang ; Tokyo U., IPMU)
We discuss the discovery potential of a dark force carrier ($Z'$) of very light mass, $m_{Z'} \lesssim {\cal O}(1-10)$ GeV, at hadron colliders via rare top quark decays, especially when it decays invisibly in typical search schemes. We emphasize that the top sector is promising for the discovery of new particles because top quark pairs are copiously produced at the Large Hadron Collider. [...]
arXiv:1411.0668; CERN-PH-TH-2014-209; APCTP-PRE2014-013; IPMU14-0330; CERN-PH-TH-2014-209; APCTP PRE2014-013; IPMU14-0330.-
2015-03-25 - 19 p.
- Published in : JHEP 03 (2015) 134
Article from SCOAP3: PDF; Fulltext: PDF; Springer Open Access article: PDF; External link: Preprint
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Improving the sensitivity of stop searches with on-shell constrained invariant mass variables
/ Cho, Won Sang (Florida U. ; IBS, Daejeon, CTPU) ; Gainer, James S. (Florida U.) ; Kim, Doojin (Florida U.) ; Matchev, Konstantin T. (Florida U.) ; Moortgat, Filip (CERN) ; Pape, Luc (CERN) ; Park, Myeonghun (Tokyo U., IPMU ; APCTP, Pohang ; POSTECH)
The search for light stops is of paramount importance, both in general as a promising path to the discovery of beyond the standard model physics and more specifically as a way of evaluating the success of the naturalness paradigm. While the LHC experiments have ruled out much of the relevant parameter space, there are "stop gaps", i.e., values of sparticle masses for which existing LHC analyses have relatively little sensitivity to light stops. [...]
arXiv:1411.0664; CTPU-14-11; APCTP-PRE2014-014; IPMU14-0333; CTPU-14-11; APCTP PRE2014 - 014; IPMU14-0333.-
2015-05-07 - 50 p.
- Published in : JHEP 05 (2015) 040
Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF; Springer Open Access article: PDF;
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The role of interference in unraveling the ZZ-couplings of the newly discovered boson at the LHC
/ Chen, Mingshui (Florida U.) ; Cheng, Tongguang (Florida U.) ; Gainer, James S (Florida U.) ; Korytov, Andrey (Florida U.) ; Matchev, Konstantin T (Florida U.) ; Milenovic, Predrag (Florida U.) ; Mitselmakher, Guenakh (Florida U.) ; Park, Myeonghun (CERN) ; Rinkevicius, Aurelijus (Florida U.) ; Snowball, Matthew (Florida U.)
We present a general procedure for measuring the tensor structure of the coupling of the scalar Higgs-like boson recently discovered at the LHC to two Z bosons, including the effects of interference among different operators. To motivate our concern with this interference, we explore the parameter space of the couplings in the effective theory describing these interactions and illustrate the effects of interference on the differential dilepton mass distributions. [...]
arXiv:1310.1397; CERN-PH-TH-2013-164.-
2014 - 29 p.
- Published in : Phys. Rev. D 89 (2014) 034002
APS published version, local copy: PDF; External link: Preprint
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