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CERN Document Server Encontrados 11 registros  1 - 10siguiente  ir al registro: La búsqueda tardó 0.60 segundos. 
1.
High energy lepton colliders as the ultimate Higgs microscopes / Banerjee, Shankha (CERN) ; Gupta, Rick S. (Durham U., IPPP) ; Ochoa-Valeriano, Oscar (Durham U., IPPP) ; Spannowsky, Michael (Durham U., IPPP)
We study standard electroweak/Higgs processes at the high-energy lepton colliders ILC and CLIC. We identify a subset of three operators in the SMEFT that give leading contributions to these processes at high energies. [...]
arXiv:2109.14634; CERN-TH-2021-142; IPPP/21/35.- 2022-02-21 - 25 p. - Published in : JHEP 02 (2022) 176 Fulltext: document - PDF; 2109.14634 - PDF;
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2.
A fully differential SMEFT analysis of the golden channel using the method of moments / Banerjee, Shankha (CERN) ; Gupta, Rick S. (Durham U., IPPP) ; Ochoa-Valeriano, Oscar (Durham U., IPPP) ; Spannowsky, Michael (Durham U., IPPP) ; Venturini, Elena (Munich, Tech. U.)
The Method of Moments is a powerful framework to disentangle the relative contributions of amplitudes of a specific process to its various phase space regions. We apply this method to carry out a fully differential analysis of the Higgs decay channel $h \to 4\ell$ and constrain gauge-Higgs coupling modifications parametrised by dimension-six effective operators. [...]
arXiv:2012.11631; CERN-TH-2020-220; TUM-HEP-1309/20; IPPP/20/68.- 2021-06-04 - 32 p. - Published in : JHEP 2106 (2021) 031 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF;
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3.
Precision SMEFT bounds from the VBF Higgs at high transverse momentum / Araz, Jack Y. (Durham U., IPPP) ; Banerjee, Shankha (CERN) ; Gupta, Rick S. (Durham U., IPPP) ; Spannowsky, Michael (Durham U., IPPP)
We study the production of Higgs bosons at high transverse momenta via vector-boson fusion (VBF) in the Standard Model Effective Field Theory (SMEFT). We find that contributions from four independent operator combinations dominate in this limit. [...]
arXiv:2011.03555; IPPP/20/52; CERN-TH-2020-186.- 2021-04-14 - 27 p. - Published in : JHEP 2104 (2021) 125 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF;
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4.
Long-Lived Particles at the Energy Frontier: The MATHUSLA Physics Case / Curtin, David (Toronto U.) ; Drewes, Marco (Louvain U., CP3) ; McCullough, Matthew (CERN) ; Meade, Patrick (YITP, Stony Brook) ; Mohapatra, Rabindra N. (Maryland U.) ; Shelton, Jessie (Illinois U., Urbana) ; Shuve, Brian (Harvey Mudd Coll. ; SLAC) ; Accomando, Elena (Southampton U.) ; Alpigiani, Cristiano (Washington U., Seattle) ; Antusch, Stefan (Basel U.) et al.
We examine the theoretical motivations for long-lived particle (LLP) signals at the LHC in a comprehensive survey of Standard Model (SM) extensions. LLPs are a common prediction of a wide range of theories that address unsolved fundamental mysteries such as naturalness, dark matter, baryogenesis and neutrino masses, and represent a natural and generic possibility for physics beyond the SM (BSM). [...]
arXiv:1806.07396; FERMILAB-PUB-18-264-T.- 2019-10-02 - 133 p. - Published in : Rep. Prog. Phys. 82 (2019) 116201 Fulltext: 1806.07396 - PDF; fermilab-pub-18-264-t - PDF; External link: Fermilab Library Server (fulltext available)
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5.
Maximal deviations of the scalar boson couplings if no further particle is seen / Gupta, Rick S (Barcelona, IFAE) ; Rzehak, Heidi (CERN) ; Wells, James D (CERN ; Michigan U.)
In the light of the discovery of a Higgs boson like particle and no evidence of particles beyond the Standard Model the question arises: How much can the coupling of the Higgs boson to other particles deviate from the Standard Model Higgs couplings if no further particles will be discovered at the LHC and how precise have Higgs coupling measurements to be to capture these deviations? In the context of three dierent models (a model with a singlet Higgs boson mixed-in, a composite Higgs boson model and the Minimal Supersymmetric Standard Model) these questions will be answered..
2013 Fulltext: PDF;
In : 48th Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, Italy, 2 - 9 Mar 2013, pp.299-304
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6.
How well do we need to measure the Higgs boson mass and self-coupling? / Gupta, Rick S. (Barcelona, IFAE) ; Rzehak, Heidi (CERN) ; Wells, James D. (CERN ; Michigan U.)
Much of the discussion regarding future measurements of the Higgs boson mass and self-coupling is focussed on how well various collider options can do. In this article we ask a physics-based question of how well do we need colliders to measure these quantities to have an impact on discovery of new physics or an impact in how we understand the role of the Higgs boson in nature. [...]
arXiv:1305.6397; CERN-PH-TH-2013-101; CERN-PH-TH-2013-101.- 2013-09-27 - 12 p. - Published in : Phys. Rev. D 88 (2013) 055024 APS Published version, local copy: PDF; Fulltext: PDF; External link: Preprint
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7.
How well do we need to measure Higgs boson couplings? / Gupta, Rick S. (CERN ; Michigan U. ; Barcelona, IFAE) ; Rzehak, Heidi (CERN) ; Wells, James D. (CERN ; Michigan U.)
Most of the discussion regarding the Higgs boson couplings to Standard Model vector bosons and fermions is presented with respect to what present and future collider detectors will be able to measure. Here, we ask the more physics-based question of how well do we need to measure the Higgs boson couplings? We first present a reasonable definition of "need" and then investigate the answer in the context of various highly motivated new physics scenarios: supersymmetry, mixed-in hidden sector Higgs bosons, and a composite Higgs boson. [...]
arXiv:1206.3560; CERN-PH-TH-2012-158; CERN-PH-TH-2012-158.- 2012 - 9 p. - Published in : Phys. Rev. D 86 (2012) 095001 APS Published version, local copy: PDF; Fulltext: PDF; External link: Preprint
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8.
Probing Quartic Neutral Gauge Boson Couplings using diffractive photon fusion at the LHC / Gupta, Rick S. (CERN ; Michigan U., MCTP)
A complete list of operators contributing at the lowest order to Quartic Neutral Gauge Boson Couplings involving photons and Z-bosons, is presented. We show that, for the couplings we consider, the lowest order contribution is from dimension 8 operators in the case when a light Higgs is present and from dimension 6 operators in the higgsless case where electroweak symmetry is non-linearly realized. [...]
arXiv:1111.3354; CERN-PH-TH-2011-284; MCTP-11-40; CERN-PH-TH-2011-284; MCTP-11-40.- 2012 - 37 p. - Published in : Phys. Rev. D 85 (2012) 014006 APS published version, local copy : PDF; Fulltext: PDF; External link: Preprint
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9.
Theory and LHC Phenomenology of Classicalon Decays / Grojean, Christophe (CERN ; Saclay, SPhT) ; Gupta, Rick S. (CERN ; Michigan U., MCTP ; Michigan U.)
It has been recently proposed by Dvali et al that high energy scattering in non-renormalizable theories, like the higgsless Standard Model, can be unitarized by the formation of classical configurations called classicalons. In this work we argue that classicalons should have analogs of thermodynamic properties like temperature and entropy and perform a model-independent statistical mechanical analysis of classicalon decays. [...]
arXiv:1110.5317; CERN-PH-TH-2011-249; MCTP-11-35; CERN-PH-TH-2011-249; MCTP-11-35.- 2012 - 45 p. - Published in : JHEP 05 (2012) 114 Fulltext: PDF; Springer Open Access article: PDF; External link: Preprint
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10.
Higgs boson search significance deformations due to mixed-in scalars / Gupta, Rick S. (CERN ; Michigan U., MCTP) ; Wells, James D. (CERN ; Michigan U., MCTP)
The existence of exotic scalars that mix with the Standard Model Higgs boson can affect Higgs boson phenomenology in a multitude of ways. We show that the first evidence of the existence of such an extra scalar could come in the $h\to WW \to l \nu l \nu$ significance plots of Standard Model Higgs boson searches..
arXiv:1110.0824; CERN-PH-TH-2011-241; MCTP-11-36; CERN-PH-TH-2011-041-[SIC!]; CERN-PH-TH-2011-241; MCTP-11-36.- 2012-03-29 - 6 p. - Published in : Phys. Lett. B 710 (2012) 154-158 Fulltext: PDF; External link: Preprint
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CERN Document Server : Encontrados 11 registros   1 - 10siguiente  ir al registro:
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