scholarly journals Very lightCP-odd Higgs bosons of the NMSSM at the LHC in4b-quark final states

2011 ◽  
Vol 84 (1) ◽  
Author(s):  
M. M. Almarashi ◽  
S. Moretti
Keyword(s):  
Higgs Bosons ◽  
Final States

QCD at Fixed Order: Processes

2018 ◽  
Author(s):  
John Campbell ◽  
Joey Huston ◽  
Frank Krauss
Keyword(s):  
Hadron Collider ◽  
Detailed Comparison ◽  
Theoretical Description ◽  
Higgs Bosons ◽  
Final States ◽  
Collider Physics ◽  
Wide Range ◽  
Theoretical Predictions ◽  
Fixed Order ◽  
The Subject

At the core of any theoretical description of hadron collider physics is a fixed-order perturbative treatment of a hard scattering process. This chapter is devoted to a survey of fixed-order predictions for a wide range of Standard Model processes. These range from high cross-section processes such as jet production to much more elusive reactions, such as the production of Higgs bosons. Process by process, these sections illustrate how the techniques developed in Chapter 3 are applied to more complex final states and provide a summary of the fixed-order state-of-the-art. In each case, key theoretical predictions and ideas are identified that will be the subject of a detailed comparison with data in Chapters 8 and 9.

scholarly journals Search for Heavy Higgs Bosons in Fermionic Decay Channels with CMS

2018 ◽  
Vol 46 ◽  
pp. 1860058
Author(s):  
Ye Chen
Keyword(s):  
Higgs Boson ◽  
Standard Model ◽  
Confidence Level ◽  
Higgs Bosons ◽  
Final States ◽  
Centre Of Mass ◽  
Decay Channels ◽  
Upper Limits ◽  
The Standard Model ◽  
Cms Detector

Latest results of searches for heavy Higgs bosons in fermionic final states are presented using the CMS detector at the LHC. Results are based on pp collision data collected at centre-of-mass energies of 8 and 13 TeV which have been interpreted according to different extensions of the Standard Model such as MSSM, 2HDM, and NMSSM. These searches look for evidence of other scalar or pseudoscalar bosons, in addition to the observed SM-like 125 GeV Higgs boson, and set 95% confidence level upper limits in fermionic final states and benchmark models explored. The talk reviews briefly the major results obtained by the CMS Collaboration during Run I, and presents the most recent searches performed during Run II.

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.

scholarly journals Searches for a heavy scalar boson H decaying to a pair of 125 GeV Higgs bosons hh or for a heavy pseudoscalar boson A decaying to Zh, in the final states with h →ττ

2016 ◽  
Vol 755 ◽  
pp. 217-244 ◽  
Author(s):  
V. Khachatryan ◽  
A.M. Sirunyan ◽  
A. Tumasyan ◽  
W. Adam ◽  
E. Asilar ◽  
...  
Keyword(s):  
Higgs Bosons ◽  
Final States ◽  
Scalar Boson

SEARCH FOR CHARGED HIGGS BOSONS IN E+E- COLLISIONS AT LEP AT THE DELPHI EXPERIMENT

2001 ◽  
Vol 16 (supp01b) ◽  
pp. 839-842
Author(s):  
◽  
G. Gómez-Ceballos
Keyword(s):  
Higgs Boson ◽  
High Energy ◽  
Higgs Bosons ◽  
Final States ◽  
Centre Of Mass ◽  
Energy Data ◽  
Delphi Detector ◽  
Charged Higgs ◽  
Delphi Experiment ◽  
Charged Higgs Bosons

A search for pair produced charged Higgs bosons was performed in the high energy data collected by the DELPHI detector at LEP II at centre-of-mass energies from 183 GeV to 208 GeV. The three different final states, τντν, [Formula: see text] and [Formula: see text] were considered. No excess of data compared to the expected Standard Model processes was observed and the existence of a charged Higgs boson with mass lower than 75.0 GeV / c 2 is excluded at 95% confidence level.

scholarly journals Probing exotic charged Higgs decays in the Type-II 2HDM through top rich signal at a future 100 TeV pp collider

2020 ◽  
Vol 2020 (11) ◽  
Author(s):  
Shuailong Li ◽  
Huayang Song ◽  
Shufang Su
Keyword(s):  
Higgs Doublet ◽  
Higgs Bosons ◽  
Final States ◽  
Type Ii ◽  
Decision Tree Classifier ◽  
Decay Channels ◽  
Decay Modes ◽  
Exotic Decay ◽  
Tree Classifier ◽  
Boosted Decision Tree

Abstract The exotic decay modes of non-Standard Model Higgs bosons are efficient in probing the hierarchical Two Higgs Doublet Models (2HDM). In particular, the decay mode H±→HW± serves as a powerful channel in searching for charged Higgses. In this paper, we analyze the reach for H±→HW±→$$ t\overline{t}W $$ t t ¯ W at a 100 TeV pp collider, and show that it extends the reach of the previously studied ττW final states once above the top threshold. Top tagging technique is used, in combination with a boosted decision tree classifier. At the low tan β region, almost the entire hierarchical Type-II 2HDM parameter space can be probed via the combination of all exotic decay channels.

scholarly journals One-loop corrections to the two-body decays of the neutral Higgs bosons in the complex NMSSM

2020 ◽  
Vol 80 (10) ◽  
Author(s):  
Julien Baglio ◽  
Thi Nhung Dao ◽  
Margarete Mühlleitner
Keyword(s):  
Higgs Boson ◽  
State Of The Art ◽  
Higgs Sector ◽  
New Physics ◽  
Higgs Bosons ◽  
Final States ◽  
Supersymmetric Extension ◽  
Gauge Dependence ◽  
Fortran Code ◽  
Electroweak Corrections

AbstractSince no direct signs of new physics have been observed so far indirect searches in the Higgs sector have become increasingly important. With the discovered Higgs boson behaving very standard model (SM)-like, however, indirect new physics manifestations are in general expected to be small. On the theory side, this makes precision predictions for the Higgs parameters and observables indispensable. In this paper, we provide in the framework of the CP-violating next-to-minimal supersymmetric extension of the SM (NMSSM) the complete next-to-leading order (SUSY-)electroweak corrections to the neutral Higgs boson decays that are on-shell and non-loop induced. We also investigate possible gauge-dependence issues in the decays of light Higgs bosons into fermion pairs. Together with the also provided SUSY-QCD corrections to colored final states, the newly calculated SUSY-electroweak corrections are implemented in the Fortran code which already includes the state-of-the art QCD corrections. The new code is called . This way we provide the NMSSM Higgs boson decays and branching ratios at presently highest possible precision and thereby contribute to the endeavor of searching for New Physics at present and future colliders.

scholarly journals HiggsBounds-5: testing Higgs sectors in the LHC 13 TeV Era

2020 ◽  
Vol 80 (12) ◽  
Author(s):  
Philip Bechtle ◽  
Daniel Dercks ◽  
Sven Heinemeyer ◽  
Tobias Klingl ◽  
Tim Stefaniak ◽  
...  
Keyword(s):  
Center Of Mass ◽  
Branching Ratio ◽  
Computer Code ◽  
Higgs Bosons ◽  
Final States ◽  
Mass Energy ◽  
The Public ◽  
Center Of Mass Energy ◽  
Higgs Search ◽  
Recent Developments

AbstractWe describe recent developments of the public computer code . In particular, these include the incorporation of LHC Higgs search results from Run 2 at a center-of-mass energy of 13 TeV, and an updated and extended framework for the theoretical input that accounts for improved Higgs cross section and branching ratio predictions and new search channels. We furthermore discuss an improved method used in to approximately reconstruct the exclusion likelihood for LHC searches for non-standard Higgs bosons decaying to $$\tau \tau $$ τ τ final states. We describe in detail the new and updated functionalities of the new version .

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