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Likelihood analysis of the pMSSM11 in light of LHC 13-TeV data

Bagnaschi, E. ; Sakurai, K. ; Borsato, M. ; Buchmueller, O. ; Citron, M. ; Costa, J. C. ; De Roeck, A. ; Dolan, M. J. ; Ellis, J. R. ; Flächer, H. ; Heinemeyer, S. ; Lucio, M. ; Martínez Santos, D. ; Olive, K. A. ; Richards, A. ; Spanos, V. C. ; Suárez Fernández, I. ; Weiglein, G.

The European physical journal. C, Particles and fields, 2018-03, Vol.78 (3), p.256-38, Article 256 [Periódico revisado por pares]

Berlin/Heidelberg: Springer Berlin Heidelberg

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Título:
Likelihood analysis of the pMSSM11 in light of LHC 13-TeV data
Autor: Bagnaschi, E. ; Sakurai, K. ; Borsato, M. ; Buchmueller, O. ; Citron, M. ; Costa, J. C. ; De Roeck, A. ; Dolan, M. J. ; Ellis, J. R. ; Flächer, H. ; Heinemeyer, S. ; Lucio, M. ; Martínez Santos, D. ; Olive, K. A. ; Richards, A. ; Spanos, V. C. ; Suárez Fernández, I. ; Weiglein, G.
Assuntos: Analysis ; Astronomy ; Astrophysics and Cosmology ; Constraint modelling ; Dark matter ; Density ; Elementary Particles ; Hadrons ; Heavy Ions ; Higgs bosons ; Large Hadron Collider ; Measurement Science and Instrumentation ; Nuclear Energy ; Nuclear Physics ; Parameters ; Physics ; Physics and Astronomy ; PHYSICS OF ELEMENTARY PARTICLES AND FIELDS ; Quantum Field Theories ; Quantum Field Theory ; Regular - Theoretical Physics ; Regular Article - Theoretical Physics ; String Theory
É parte de: The European physical journal. C, Particles and fields, 2018-03, Vol.78 (3), p.256-38, Article 256
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
USDOE Office of Science (SC), High Energy Physics (HEP)
de-sc0011842; FPA2016-78645-P, IFT Centro de Excelencia Severo O; SC0011842
Descrição: We use MasterCode to perform a frequentist analysis of the constraints on a phenomenological MSSM model with 11 parameters, the pMSSM11, including constraints from ∼ 36 /fb of LHC data at 13 TeV and PICO, XENON1T and PandaX-II searches for dark matter scattering, as well as previous accelerator and astrophysical measurements, presenting fits both with and without the ( g - 2 ) μ constraint. The pMSSM11 is specified by the following parameters: 3 gaugino masses M 1 , 2 , 3 , a common mass for the first-and second-generation squarks m q ~ and a distinct third-generation squark mass m q ~ 3 , a common mass for the first-and second-generation sleptons m ℓ ~ and a distinct third-generation slepton mass m τ ~ , a common trilinear mixing parameter A , the Higgs mixing parameter μ , the pseudoscalar Higgs mass M A and tan β . In the fit including ( g - 2 ) μ , a Bino-like χ ~ 1 0 is preferred, whereas a Higgsino-like χ ~ 1 0 is mildly favoured when the ( g - 2 ) μ constraint is dropped. We identify the mechanisms that operate in different regions of the pMSSM11 parameter space to bring the relic density of the lightest neutralino, χ ~ 1 0 , into the range indicated by cosmological data. In the fit including ( g - 2 ) μ , coannihilations with χ ~ 2 0 and the Wino-like χ ~ 1 ± or with nearly-degenerate first- and second-generation sleptons are active, whereas coannihilations with the χ ~ 2 0 and the Higgsino-like χ ~ 1 ± or with first- and second-generation squarks may be important when the ( g - 2 ) μ constraint is dropped. In the two cases, we present χ 2 functions in two-dimensional mass planes as well as their one-dimensional profile projections and best-fit spectra. Prospects remain for discovering strongly-interacting sparticles at the LHC, in both the scenarios with and without the ( g - 2 ) μ constraint, as well as for discovering electroweakly-interacting sparticles at a future linear e + e - collider such as the ILC or CLIC.
Editor: Berlin/Heidelberg: Springer Berlin Heidelberg
Idioma: Inglês

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Likelihood analysis of the pMSSM11 in light of LHC 13-TeV data

Bagnaschi, E. ; Sakurai, K. ; Borsato, M. ; Buchmueller, O. ; Citron, M. ; Costa, J. C. ; De Roeck, A. ; Dolan, M. J. ; Ellis, J. R. ; Flächer, H. ; Heinemeyer, S. ; Lucio, M. ; Martínez Santos, D. ; Olive, K. A. ; Richards, A. ; Spanos, V. C. ; Suárez Fernández, I. ; Weiglein, G.

Berlin/Heidelberg: Springer Berlin Heidelberg

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