scholarly journals Searching for charged Higgs bosons in the B − L supersymmetric standard model at the high luminosity large hadron collider

2019 ◽  
Vol 788 ◽  
pp. 65-69 ◽  
Author(s):  
W. Abdallah ◽  
A. Hammad ◽  
S. Khalil ◽  
S. Moretti
Keyword(s):  
Large Hadron Collider ◽  
Standard Model ◽  
Supersymmetric Standard Model ◽  
Hadron Collider ◽  
Higgs Bosons ◽  
High Luminosity ◽  
Charged Higgs ◽  
Charged Higgs Bosons

scholarly journals CP violation in Charged Higgs Bosons decays H± → W± (γ, Z) in the Minimal Supersymmetric Standard Model (MSSM)

2007 ◽  
Vol 22 (31) ◽  
pp. 6022-6032 ◽  
Author(s):  
ABDESSLAM ARHRIB ◽  
RACHID BENBRIK ◽  
MOHAMED CHABAB ◽  
WEI TING CHANG ◽  
TZU-CHIANG YUAN
Keyword(s):  
Cp Violation ◽  
Standard Model ◽  
Supersymmetric Standard Model ◽  
Minimal Supersymmetric Standard Model ◽  
Branching Ratio ◽  
Higgs Bosons ◽  
Cp Asymmetry ◽  
Charged Higgs ◽  
Order Of Magnitude ◽  
Charged Higgs Bosons

One loop mediated charged Higgs bosons decays H± → W±V, V = Z, γ are studied in the Minimal Supersymmetric Standard Model (MSSM) with and without CP violating phases. We evaluate the MSSM contributions to these processes taking into account B → Xsγ constraint as well as experimental constraints on the MSSM parameters. In the MSSM, we found that in the intermediate range of tan β ≲ 10 and for large At and large μ, where the lightest top squark becomes very light and hence non-decoupled, the branching ratio of H± → W±Z can be of the order 10−3 while the branching ratio of H± → W±γ is of the order 10−5. We found also that the CP violating phases of soft SUSY parameters can modify the branching ratio by about one order of magnitude. We also show that MSSM with CP violating phases lead to CP-violating asymmetry in the decays H+ → W+V and H− → W−V. Such CP asymmetry can be rather large and can reach 80% in some region of parameter space.

scholarly journals Closing the Window on Light Charged Higgs Bosons in the NMSSM

2012 ◽  
Vol 2012 ◽  
pp. 1-22 ◽  
Author(s):  
Johan Rathsman ◽  
Thomas Rössler
Keyword(s):  
Higgs Boson ◽  
Large Hadron Collider ◽  
Branching Fraction ◽  
Hadron Collider ◽  
Higgs Bosons ◽  
Supersymmetric Model ◽  
Charged Higgs ◽  
Charged Higgs Bosons ◽  
Minimal Supersymmetric Model ◽  
Higgs Signal

In the Next-to-Minimal SuperSymmetric Model (NMSSM) the lightest CP-odd Higgs bosons (a1) can be very light. As a consequence, in addition to the standard charged Higgs boson (h±) decays considered in the MSSM for a light charged Higgs (mh±<mt), the branching fraction forh±→a1Wcan be dominant. We investigate how this signal can be searched for intt-production at the Large Hadron Collider (LHC) in the case that (ma1≳2mB) with thea1giving rise to a singlebb--jet and discuss to what extent the LHC experiments are able to discover such a scenario with an integrated luminosity ~20 fb−1. We also discuss the implications of the possible Higgs-signal observed at the LHC.

scholarly journals Signal versus background interference in $$ {H}^{+}\to t\overline{b} $$ signals for MSSM benchmark scenarios

2020 ◽  
Vol 2020 (10) ◽  
Author(s):  
Abdesslam Arhrib ◽  
Duarte Azevedo ◽  
Rachid Benbrik ◽  
Hicham Harouiz ◽  
Stefano Moretti ◽  
...  
Keyword(s):  
Higgs Boson ◽  
Large Hadron Collider ◽  
Hadron Collider ◽  
Statistical Error ◽  
Charged Higgs Boson ◽  
Higgs Bosons ◽  
Total Width ◽  
Interference Effects ◽  
Charged Higgs ◽  
Charged Higgs Bosons

Abstract In this paper, we investigate sizeable interference effects between a heavy charged Higgs boson signal produced dominantly via $$ gg\to t\overline{b}{H}^{-} $$ gg → t b ¯ H − (+ c.c.) followed by the decay $$ {H}^{-}\to b\overline{t} $$ H − → b t ¯ (+ c.c.) and the irreducible background given by $$ pp\to t\overline{t}b\overline{b} $$ pp → t t ¯ b b ¯ topologies at the Large Hadron Collider (LHC). We show that it may be possible that such effects could spoil current H± searches where signal and background are normally treated separately. The reason for this is that a heavy charged Higgs boson can have a large total width, in turn enabling such interferences, altogether leading to potentially very significant alterations, both at the inclusive and exclusive level, of the yield induced by the signal alone. This therefore implies that currently established LHC searches for such wide charged Higgs bosons might require modifications. We show such effects quantitatively using two different benchmark configurations of the minimal realisation of Supersymmetry, wherein such H± states naturally exist. However, on the basis of the limited computing resources available, we are unable to always bring the statistical error down to a level where all such interference effects are unequivocal, so that we advocate dedicated experimental analyses to confirm this with higher statistics data samples.

scholarly journals Two Higgs Bosons near 125 GeV in the Complex NMSSM and the LHC Run I Data

2015 ◽  
Vol 2015 ◽  
pp. 1-16 ◽  
Author(s):  
Stefano Moretti ◽  
Shoaib Munir
Keyword(s):  
Higgs Boson ◽  
Large Hadron Collider ◽  
Cp Violation ◽  
Standard Model ◽  
Supersymmetric Standard Model ◽  
Hadron Collider ◽  
Higgs Sector ◽  
Higgs Bosons ◽  
Neutral Higgs Boson ◽  
The Impact

We analyse the impact of explicit CP-violation in the Higgs sector of the Next-to-Minimal Supersymmetric Standard Model (NMSSM) on its consistency with the Higgs boson data from the Large Hadron Collider (LHC). Through detailed scans of the parameter space of the complex NMSSM for certain fixed values of one of its CP-violating (CPV) phases, we obtain a large number of points corresponding to five phenomenologically relevant scenarios containing ∼125 GeV Higgs boson(s). We focus, in particular, on the scenarios where the visible peaks in the experimental samples can actually be explained by two nearly mass-degenerate neutral Higgs boson states. We find that some points corresponding to these scenarios give an overall slightly improved fit to the data, more so for nonzero values of the CPV phase, compared to the scenarios containing a single Higgs boson near 125 GeV.

scholarly journals Search for Charged Higgs bosons via decays to $W^\pm$ and a 125 GeV Higgs at the Large Hadron Collider

2015 ◽  
Author(s):  
William Klemm ◽  
Rikard Enberg ◽  
Stefano Moretti ◽  
Shoaib Munir ◽  
Glenn WOUDA
Keyword(s):  
Large Hadron Collider ◽  
Hadron Collider ◽  
Higgs Bosons ◽  
Charged Higgs ◽  
Charged Higgs Bosons

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.

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