scholarly journals SUSY DARK MATTER IN LIGHT OF CDMS/XENON LIMITS

2011 ◽  
Vol 20 (08) ◽  
pp. 1383-1388 ◽  
Author(s):  
JIN MIN YANG
Keyword(s):  
Dark Matter ◽  
Higgs Boson ◽  
Parameter Space ◽  
Charged Higgs Boson ◽  
Higgs Bosons ◽  
Dark Matter Relic Density ◽  
Higgs Search ◽  
Relic Density ◽  
Supersymmetric Models ◽  
Charged Higgs

We briefly review the current CDMS/XENON constraints on the neutralino dark matter in three popular supersymmetric models: the minimal (MSSM), the next-to-minimal (NMSSM) and the nearly minimal (nMSSM). The constraints from the dark matter relic density and various collider experiments are also taken into account. The conclusion is that for each model the current CDMS/XENON limits can readily exclude a large part of the parameter space allowed by other constraints and the future SuperCDMS or XENON100 can cover most of the allowed parameter space. The implication for the Higgs search at the LHC is also discussed. It is found that in the currently allowed parameter space the MSSM charged Higgs boson is quite unlikely to be discovered at the LHC while the neutral Higgs bosons H and A may be accessible at the LHC in the parameter space with a large μ parameter.

scholarly journals Charged Higgs bosons in the NMSSM under current LHC constraints

2019 ◽  
Vol 34 (28) ◽  
pp. 1950230
Author(s):  
Zhaoxia Heng ◽  
Lin Guo ◽  
Pengqiang Sun ◽  
Wei Wei
Keyword(s):  
Higgs Boson ◽  
Parameter Space ◽  
Branching Ratio ◽  
New Physics ◽  
Direct Search ◽  
Charged Higgs Boson ◽  
Higgs Bosons ◽  
Charged Higgs ◽  
Charged Higgs Bosons ◽  
The Masses

Charged Higgs boson is a crucial prediction of new physics beyond the SM. In this work, we perform a comprehensive scan over the parameter space of NMSSM considering various experimental constraints including the direct search limits from the 13 TeV LHC, and consider the scenario that the next-to-lightest CP-even Higgs boson is SM-like. We find that the masses of charged Higgs bosons can be as light as 350 GeV, the lightest CP-even Higgs boson [Formula: see text] is predominantly singlet and can be as light as 48 GeV, and the lightest CP-odd Higgs boson [Formula: see text] is also singlet-dominated and can be as light as 82 GeV. The charged Higgs bosons mainly decay to [Formula: see text] or [Formula: see text], but the branching ratio of the exotic decays [Formula: see text] and [Formula: see text] can maximally reach 20% and 11%, respectively, which can be used to distinguish the NMSSM from MSSM. Such a heavy charged Higgs boson is inaccessible at the 13 TeV LHC with a luminosity of 36.1 fb[Formula: see text] and its detection needs higher energy and/or higher luminosity.

scholarly journals NEUTRALINO DARK MATTER ELASTIC SCATTERING IN A FLAT AND ACCELERATING UNIVERSE

2001 ◽  
Vol 16 (19) ◽  
pp. 1229-1241 ◽  
Author(s):  
A. B. LAHANAS ◽  
V. C. SPANOS ◽  
D. V. NANOPOULOS
Keyword(s):  
Dark Matter ◽  
Higgs Boson ◽  
Elastic Scattering ◽  
Cross Section ◽  
Lower Bounds ◽  
Parameter Space ◽  
Accelerating Universe ◽  
Relic Density ◽  
Supersymmetric Models ◽  
Cosmological Data

In SUGRA inspired supersymmetric models with universal boundary conditions for the soft masses, the scalar cross-section σ scalar for the elastic neutralino–nucleon scattering is in general several orders of magnitude below the sensitivity of current experiments. For large tan β and low M1/2, m0 values, the theoretically predicted σ scalar can approach the sensitivity of these experiments (≈ 10-6 pb ) being at the same time in agreement with recent cosmological data, which impose severe restrictions on the CDM relic density, and with accelerator experiments which put lower bounds on sparticle and Higgs boson masses. Further improvement of the sensitivity of DAMA and CDMS experiments will probe the large tan β region of the parameter space in the vicinity of the boundaries of the parameter space allowed by chargino and Higgs searches.

scholarly journals A Comparative Study of Dark Matter in the MSSM and Its Singlet Extensions: A Mini Review

2012 ◽  
Vol 2012 ◽  
pp. 1-22 ◽  
Author(s):  
Wenyu Wang
Keyword(s):  
Dark Matter ◽  
Higgs Boson ◽  
Comparative Study ◽  
Parameter Space ◽  
Light Neutralino ◽  
Dark Matter Relic Density ◽  
Relic Density ◽  
The Future

In this note we briefly review the recent studies of dark matter in the MSSM and its singlet extensions: the NMSSM, the nMSSM, and the general singlet extension. Under the new detection results of CDMS II, XENON, CoGeNT, and PAMELA, we find that (i) the latest detection results can exclude a large part of the parameter space which is allowed by current collider constraints in these models. The future SuperCDMS and XENON can cover most of the allowed parameter space; (ii) the singlet sector will decouple from the MSSM-like sector in the NMSSM; however, singlet sector makes the nMSSM quite different from the MSSM; (iii) the NMSSM can allow light dark matter at several GeV to exist. Light CP-even or CP-odd Higgs boson must be present so as to satisfy the measured dark matter relic density. In case of the presence of a light CP-even Higgs boson, the light neutralino dark matter can explain the CoGeNT and DAMA/LIBRA results; (iv) the general singlet extension of the MSSM gives a perfect explanation for both the relic density and the PAMELA result through the Sommerfeld-enhanced annihilation. Higgs decays in different scenario are also studied.

SUPERSYMMETRIC MODELS WITH EXTENDED HIGGS SECTOR

1989 ◽  
Vol 04 (14) ◽  
pp. 3635-3651 ◽  
Author(s):  
MANUEL DREES
Keyword(s):  
Higgs Boson ◽  
Higgs Sector ◽  
Higgs Doublet ◽  
Charged Higgs Boson ◽  
Higgs Bosons ◽  
Supersymmetric Model ◽  
Neutral Scalar ◽  
Supersymmetric Models ◽  
Charged Higgs ◽  
Extended Higgs Sector

The Higgs sector of supersymmetric models with an additional SU (2)× U (1)Y singlet or an additional pair of Higgs doublet superfields is investigated. It is shown that in the model with a Higgs singlet bounds on Higgs boson masses are considerably weaker than in the minimal supersymmetric model; in particular, all neutral scalars can be heavier than about 150 GeV or lighter than [Formula: see text], whereas the mass of the charged Higgs boson is essentially unconstrained. The four doublet model resembles the minimal model more closely; in particular, the bounds for the heaviest and lightest neutral scalar and the heaviest charged Higgs boson are unaltered. In this model, many relations between masses of different Higgs bosons can be found; 44 of the 66 possible decays of one Higgs boson into another Higgs boson plus a real W or Z boson are kinematically forbidden. It is also shown that in both models, the lightest neutral scalar becomes indistinguishable from the standard model Higgs boson if all other Higgs bosons of the model are much heavier than Mw.

scholarly journals DARK MATTER IN THE MSSM AND ITS SINGLET EXTENSION

2010 ◽  
Vol 25 (11n12) ◽  
pp. 976-982 ◽  
Author(s):  
JIN MIN YANG
Keyword(s):  
Dark Matter ◽  
Higgs Boson ◽  
Cross Section ◽  
Higgs Bosons ◽  
Annihilation Cross Section ◽  
Supersymmetric Model ◽  
Sommerfeld Effect ◽  
Dark Matter Relic Density ◽  
Relic Density ◽  
Minimal Supersymmetric Model

We briefly review the supersymmetric explanation for the cosmic dark matter. Although the neutralino in the minimal supersymmetric model (MSSM), the next-to-minimal supersymmetric model (NMSSM) and the nearly minimal supersymmetric model (nMSSM) can naturally explain the dark matter relic density, the PAMELA result can hardly be explained in these popular models. In the general singlet extension of the MSSM, both the PAMELA result and the relic density can be explained by the singlino-like neutralino. Such singlino-like neutralinos annihilate into the singlet-like Higgs bosons, which are light enough to decay dominantly to muons or electrons, and the annihilation cross section can be greatly enhanced by the Sommerfeld effect via exchanging a light CP-even singlet-like Higgs boson. In this scenario, in order to meet the stringent LEP constraints, the SM-like Higgs boson tends to decay into the singlet Higgs pairs instead of [Formula: see text] and consequently it will give a multi-muon signal hSM → aa → 4µ or hSM → hh → 4a → 8µ at the LHC.

scholarly journals The forgotten channels: charged Higgs boson decays to a W± and a non-SM-like Higgs boson

2021 ◽  
Vol 2021 (6) ◽  
Author(s):  
Henning Bahl ◽  
Tim Stefaniak ◽  
Jonas Wittbrodt
Keyword(s):  
Higgs Boson ◽  
Higgs Sector ◽  
Higgs Doublet ◽  
Charged Higgs Boson ◽  
Higgs Bosons ◽  
Type I ◽  
Collider Phenomenology ◽  
Charged Higgs ◽  
Charged Higgs Bosons ◽  
Almost All

Abstract The presence of charged Higgs bosons is a generic prediction of multiplet extensions of the Standard Model (SM) Higgs sector. Focusing on the Two-Higgs-Doublet-Model (2HDM) with type I and lepton-specific Yukawa sectors, we discuss the charged Higgs boson collider phenomenology in the theoretically and experimentally viable parameter space. While almost all existing experimental searches at the LHC target the fermionic decays of charged Higgs bosons, we point out that the bosonic decay channels — especially the decay into a non-SM-like Higgs boson and a W boson — often dominate over the fermionic channels. Moreover, we revisit two genuine BSM effects on the properties of the discovered Higgs boson — the charged Higgs contribution to the diphoton rate and the Higgs decay to two light Higgs bosons — and their implication for the charged Higgs boson phenomenology. As main result of the present paper, we propose five two-dimensional benchmark scenarios with distinct phenomenological features in order to facilitate the design of dedicated LHC searches for charged Higgs bosons decaying into a W boson and a light, non-SM-like Higgs boson.

scholarly journals Triply charged Higgs bosons at a 100 TeV pp collider

2021 ◽  
Vol 81 (1) ◽  
Author(s):  
Junxing Pan ◽  
Jung-Hsin Chen ◽  
Xiao-Gang He ◽  
Gang Li ◽  
Jhih-Ying Su
Keyword(s):  
Higgs Boson ◽  
Hadron Collider ◽  
Vacuum Expectation ◽  
Vacuum Expectation Value ◽  
Mass Splitting ◽  
Charged Higgs Boson ◽  
Higgs Bosons ◽  
Boson Mass ◽  
Final State ◽  
Charged Higgs

AbstractIn this work, we study the potential of searching for triply charged Higgs boson originating from a complex Higgs quadruplet in the final state with at least three same-sign leptons. A detailed collider analysis of the SM backgrounds and signals is performed at a 100 TeV pp collider for the triply charged Higgs boson mass below 1 TeV and the Higgs quadruplet vacuum expectation value $$v_\Delta $$ v Δ ranging from $$1.5\times 10^{-9}~\text {GeV}$$ 1.5 × 10 - 9 GeV to $$1.3~\text {GeV}$$ 1.3 GeV and the mass splitting $$\Delta m$$ Δ m between the nearby states of the Higgs quadruplet satisfying $$|\Delta m|\lesssim 30~\text {GeV}$$ | Δ m | ≲ 30 GeV . About $$100~\text {fb}^{-1}$$ 100 fb - 1 of data are required at most for $$5\sigma $$ 5 σ discovery. We also revisit the sensitivity at the Large Hadron Collider (LHC) and find that $$5\sigma $$ 5 σ discovery of the triply charged Higgs boson below 1 TeV can be reached for a relatively small $$v_\Delta $$ v Δ . For example, if $$v_\Delta =10^{-6}~\text {GeV}$$ v Δ = 10 - 6 GeV and $$\Delta m=0$$ Δ m = 0 , the integrated luminosity of $$330~\text {fb}^{-1}$$ 330 fb - 1 is needed. But for a relatively large $$v_\Delta $$ v Δ , i.e., $$v_\Delta \gtrsim 10^{-3}~\text {GeV}$$ v Δ ≳ 10 - 3 GeV , the triply charged Higgs boson above about 800 GeV cannot be discovered even in the high-luminosity LHC era. For $$\Delta m>0$$ Δ m > 0 , the cascade decays are open and the sensitivity can be improved depending on the value of $$v_\Delta $$ v Δ .

scholarly journals Searching for heavy charged Higgs bosons through top quark polarization

2020 ◽  
Vol 35 (15n16) ◽  
pp. 2041011 ◽  
Author(s):  
Abdesslam Arhrib ◽  
Adil Jueid ◽  
Stefano Moretti
Keyword(s):  
Higgs Boson ◽  
Top Quark ◽  
Hadron Collider ◽  
Underlying Mechanism ◽  
Charged Higgs Boson ◽  
Higgs Bosons ◽  
Type I ◽  
Chiral Structure ◽  
Charged Higgs ◽  
Charged Higgs Bosons

We study the production of a heavy charged Higgs boson at the Large Hadron Collider (LHC) in [Formula: see text] within a 2-Higgs Doublet Model (2HDM). The chiral structure of the [Formula: see text] coupling can trigger a particular spin state of the top quark produced in the decay of a charged Higgs boson and, therefore, is sensitive to the underlying mechanism of the Electroweak Symmetry Breaking (EWSB). Taking two benchmark models (2HDM type-I and 2HDM type-Y) as an example, we show that inclusive rates, differential distributions and forward–backward asymmetries of the top quark’s decay products can be used to search for heavy charged Higgs bosons and also as model discriminators.

HOW SUPERCRITICAL STRING COSMOLOGY AFFECTS LHC

2010 ◽  
Vol 25 (40) ◽  
pp. 3335-3346
Author(s):  
D. V. NANOPOULOS
Keyword(s):  
Dark Matter ◽  
Parameter Space ◽  
Z Bosons ◽  
High Energy ◽  
String Cosmology ◽  
Matter Content ◽  
Higgs Bosons ◽  
Model Parameters ◽  
Final States ◽  
Dark Matter Relic Density

In supercritical string cosmology (SSC), a time-dependent dilaton leads to a smoothly evolving dark energy and modifies the regions of the mSUGRA parameter space where the observed value of the dark matter relic density may be obtained. In particular, the dilaton dilutes the supersymmetric dark matter density (of neutralinos) by a factor [Formula: see text] and consequently relaxes the allowed parameter mSUGRA parameter space. The final states expected at the LHC in this scenario, consist of Z bosons, Higgs bosons, and/or high energy taus. From this, it is possible to characterize these final states and determine the model parameters. Using these parameters, we determine the dark matter content and the neutralino–proton cross section. All these techniques can also be applied to determine model parameters in SSC models with different SUSY breaking scenarios.

CHARGED HIGGS BOSON DECAY H± → ϒW±: THE EFFECTS OF P- AND D-STATES

1991 ◽  
Vol 06 (17) ◽  
pp. 1575-1579 ◽  
Author(s):  
R. W. ROBINETT ◽  
L. WEINKAUF
Keyword(s):  
Higgs Boson ◽  
Decay Mode ◽  
Parameter Space ◽  
Charged Higgs Boson ◽  
Higgs Decay ◽  
Charged Higgs ◽  
D Wave

We calculate the effects of including P- and D-wave quarkonium states in the charged Higgs decay mode H± → ϒW±. We find no interesting region of parameter space in which the P- and D-wave contributions have a significant effect.

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