Results 81 to 90 of about 247,984 (233)

The CP-conserving two-Higgs-doublet model: the approach to the decoupling limit [PDF]

open access: yes, 2002
A CP-even neutral Higgs boson with Standard-Model-like couplings may be the lightest scalar of a two-Higgs-doublet model. We study the decoupling limit of the most general CP-conserving two-Higgs-doublet model, where the mass of the lightest Higgs scalar
A. Bartl   +74 more
core   +2 more sources

Exploring Dark Photon Production and Kinetic Mixing Constraints in Heavy‐Ion Collisions

open access: yesAstronomische Nachrichten, EarlyView.
ABSTRACT Vector U‐bosons, often referred to as “dark photons,” are potential candidates for mediating dark matter interactions. In this study, we outline a procedure to derive theoretical constraints on the upper bound of the kinetic mixing parameter ϵ2MU$$ {\upvarepsilon}^2\left({M}_U\right) $$ using dilepton data from heavy‐ion from SIS to RHIC ...
Adrian William Romero Jorge   +3 more
wiley   +1 more source

Measurements of properties of the Higgs boson decaying into the four-lepton final state in pp collisions at s=13$$ \sqrt{s}=13 $$ TeV [PDF]

open access: yes, 2017
A bstractProperties of the Higgs boson are measured in the H → ZZ → 4ℓ (ℓ = e, μ) decay channel. A data sample of proton-proton collisions at s=13$$ \sqrt{s}=13 $$ TeV, collected with the CMS detector at the LHC and corresponding to an integrated ...
Cms Collaboration
semanticscholar   +1 more source

Higgs boson pair production in non-linear Effective Field Theory with full mt-dependence at NLO QCD [PDF]

open access: yesJournal of High Energy Physics, 2018
A bstractWe present a calculation of the NLO QCD corrections to Higgs boson pair production within the framework of a non-linearly realised Effective Field Theory in the Higgs sector, described by the electroweak chiral Lagrangian. We analyse how the NLO
G. Buchalla   +4 more
semanticscholar   +1 more source

Strangephilic Higgs bosons in the MSSM [PDF]

open access: yesThe European Physical Journal C, 2010
We suggest a new CPX-derived scenario for the search of strangephilic MSSM Higgs bosons at the Tevatron and the LHC, in which all neutral and charged Higgs bosons decay predominantly into pairs of strange quarks and into a strange and a charm quark, respectively.
Lee, J. S.   +3 more
openaire   +6 more sources

Little Higgs Phenomenology

open access: yes, 2003
Recently a new class of models has emerged that addresses the naturalness problem of a light Higgs boson. In these ''little Higgs'' models, the Standard Model Higgs boson is a pseudo-Nambu-Goldstone boson of an approximate global symmetry.
Logan, Heather E.
core   +1 more source

Neutrinoloser Doppelbetazerfall: Der Gral der Neutrinophysik

open access: yesPhysik in unserer Zeit, EarlyView.
Die Entschlüsselung der Neutrinoeigenschaften ist auch siebzig Jahre nach ihrer Entdeckung noch nicht abgeschlossen. Es wäre eine spektakuläre Entdeckung, sollten Neutrinos ihre eigenen Antiteilchen sein und sich folglich als Majorana‐Teilchen entpuppen. Mehrere Experimente untersuchen diese Möglichkeit.ZusammenfassungNeutrinos sind besondere Teilchen,
Bernhard Schwingenheuer
wiley   +1 more source

Measurements of Higgs boson properties in the diphoton decay channel in proton-proton collisions at s=13$$ \sqrt{s}=13 $$ TeV [PDF]

open access: yesJournal of High Energy Physics, 2018
A bstractMeasurements of Higgs boson properties in the H → γγ decay channel are reported. The analysis is based on data collected by the CMS experiment in proton-proton collisions at s=13$$ \sqrt{s}=13 $$ TeV during the 2016 LHC running period ...
A. Sirunyan   +499 more
semanticscholar   +1 more source

Is the Higgs boson composed of neutrinos? [PDF]

open access: yesPhysical Review D, 2015
9 pages, 5 figures. As published in Phys. Rev.
Krog, Jens F. C., Hill, C. T.
openaire   +5 more sources

Higgs Descendants [PDF]

open access: yes, 2012
We define a Higgs descendant $\chi$ to be a particle beyond the standard model whose mass arises predominantly from the vacuum expectation value of the Higgs boson.
Clifford Cheung   +2 more
core   +3 more sources

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