Constraints on a very light sbottom

Batell, Brian; Wagner, Carlos E. M.; Wang, Lian-Tao

doi:10.1007/jhep05(2014)002

Cited by 11 publications

(13 citation statements)

References 93 publications

(114 reference statements)

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“…We do not consider rare Higgs decays to SM particles, which can be very sensitive to new physics, whether through its effects in loops (such as in γγ or Zγ), through its modifications of the V-V-H couplings [41] or its nonstandard flavor structures (as in lepton family number-violating decays h → τμ; see [42,43], and references therein). (iii) The initial exotic 125 GeV Higgs decay is to two neutral BSM particles.-Generally, to compete with the SM decay modes, the Higgs decay to exotic particles needs to begin as a two-body decay, and LEP limits place stringent constraints on light charged particles [44,45]. Three-body or higher-body exotic decays typically require new states with masses m ≲ m h that have substantial couplings to the Higgs boson, in order to induce any appreciable BSM branching fraction after the phase space suppression [46].…”

Section: B Exotic-decay Modes Of the 125 Gev Higgs Bosonmentioning

confidence: 99%

Exotic decays of the 125 GeV Higgs boson

et al. 2014

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We perform an extensive survey of nonstandard Higgs decays that are consistent with the 125 GeV Higgs-like resonance. Our aim is to motivate a large set of new experimental analyses on the existing and forthcoming data from the Large Hadron Collider (LHC). The explicit search for exotic Higgs decays presents a largely untapped discovery opportunity for the LHC collaborations, as such decays may be easily missed by other searches. We emphasize that the Higgs is uniquely sensitive to the potential existence of new weakly coupled particles and provide a unified discussion of a large class of both simplified and complete models that give rise to characteristic patterns of exotic Higgs decays. We assess the status of exotic Higgs decays after LHC run I. In many cases we are able to set new nontrivial constraints by reinterpreting existing experimental analyses. We point out that improvements are possible with dedicated analyses and perform some preliminary collider studies. We prioritize the analyses according to their theoretical motivation and their experimental feasibility. This document is accompanied by a Web site that will be continuously updated with further information [http://exotichiggs.physics .sunysb.edu].

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Section: B Exotic-decay Modes Of the 125 Gev Higgs Bosonmentioning

confidence: 99%

Exotic decays of the 125 GeV Higgs boson

et al. 2014

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“…If the R-hadron, on the other hand, is quasi-stable and is charged (CHArged Massive Particle CHAMP), it could lead to a soft charged track in the detector. Searching for such signals is interesting, but typically challenging at the LHC [180]. On the other hand, such a light and long-live charged R-hadron has been excluded by CHAMP searches at the LEP [181][182][183][184].…”

Section: Jhep08(2014)093mentioning

confidence: 99%

Light neutralino dark matter: direct/indirect detection and collider searches

Han

Liu

2014

J. High Energ. Phys.

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We study the neutralino being the Lightest Supersymmetric Particle (LSP) as a cold Dark Matter (DM) candidate with a mass less than 40 GeV in the framework of the Next-to-Minimal-Supersymmetric-Standard-Model (NMSSM). We find that with the current collider constraints from LEP, the Tevatron and the LHC, there are three types of light DM solutions consistent with the direct/indirect searches as well as the relic abundance considerations: (i) A 1 , H 1 -funnels, (ii) stau coannihilation and (iii) sbottom coannihilation. Type-(i) may take place in any theory with a light scalar (or pseudo-scalar) near the LSP pair threshold; while Type-(ii) and (iii) could occur in the framework of Minimal-Supersymmetric-Standard-Model (MSSM) as well. We present a comprehensive study on the properties of these solutions and point out their immediate relevance to the experiments of the underground direct detection such as superCDMS and LUX/LZ, and the astro-physical indirect search such as Fermi-LAT. We also find that the decays of the SM-like Higgs boson may be modified appreciably and the new decay channels to the light SUSY particles may be sizable. The new light CP-even and CP-odd Higgs bosons will decay to a pair of LSPs as well as other observable final states, leading to interesting new Higgs phenomenology at colliders. For the light sfermion searches, the signals would be very challenging to observe at the LHC given the current bounds. However, a high energy and high luminosity lepton collider, such as the ILC, would be able to fully cover these scenarios by searching for events with large missing energy plus charged tracks or displaced vertices.

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“…We use the FEYNHIGGS 2.11.2 [25] to calculate the MSSM Higgs mass (for an estimation of hierarchical stops twoloop contribution, see Eq. (5.3) of [26]), then solve for the X t values which are consistent with a SM like Higgs mass of 122-128 GeV.…”

mentioning

confidence: 99%

Effective field theory of integrating out sfermions in the MSSM: Complete one-loop analysis

Huo

2018

Phys. Rev. D

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We apply the covariant derivative expansion of the Coleman-Weinberg potential to the sfermion sector in the minimal supersymmetric standard model, matching it to the relevant dimension-6 operators in the standard model effective field theory at one-loop level. Emphasis is paid to nondegenerate large soft supersymmetry breaking mass squares, and the most general analytical Wilson coefficients are obtained for all pure bosonic dimension-6 operators. In addition to the non-logarithmic contributions, they generally have another logarithmic contributions. Various numerical results are shown, in particular the constraints in the large X t branch reproducing the 125 GeV Higgs mass can be pushed to high values to almost completely probe the low stop mass region at the future FCC-ee experiment, even given the Higgs mass calculation uncertainty.

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Constraints on a very light sbottom

Cited by 11 publications

References 93 publications

Exotic decays of the 125 GeV Higgs boson

Exotic decays of the 125 GeV Higgs boson

Light neutralino dark matter: direct/indirect detection and collider searches

Effective field theory of integrating out sfermions in the MSSM: Complete one-loop analysis

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