Results 121 to 130 of about 62,043 (279)

Search for vector-like leptons with long-lived particle decays in the CMS muon system in proton-proton collisions at $$\sqrt{\text{s}}$$ = 13 TeV

open access: yesJournal of High Energy Physics
A first search is presented for vector-like leptons (VLLs) exclusively decaying into a light long-lived pseudoscalar boson and a standard model τ lepton.
The CMS collaboration   +2384 more
doaj   +1 more source

Search for an exotic decay of the Higgs boson to a pair of light pseudoscalars in the final state with two b quarks and two τ leptons in proton–proton collisions at s=13TeV

open access: yesPhysics Letters B, 2018
A search for an exotic decay of the Higgs boson to a pair of light pseudoscalar bosons is performed for the first time in the final state with two b quarks and two τ leptons. The search is motivated in the context of models of physics beyond the standard
A.M. Sirunyan   +2300 more
doaj   +1 more source

Role of vector and pseudoscalar mesons in understanding $1/2^-$ $N^*$ and $\Delta$ resonances

open access: yes, 2013
A study of nonstrange meson-baryon systems has been made with the idea of understanding the properties of the low-lying $1/2^-$ $N^*$ and $\Delta$ resonances.
Hosaka, A.   +3 more
core   +1 more source

Relativistic corrections to the pair Bc-meson production in e+e− annihilation

open access: yesNuclear Physics B, 2016
Relativistic corrections to the pair Bc-meson production in e+e−-annihilation are calculated. We investigate a production of pair pseudoscalar, vector and pseudoscalar+vector Bc-mesons in the leading order perturbative quantum chromodynamics and ...
A.A. Karyasov   +2 more
doaj   +1 more source

Charm Leptonic and Semileptonic Decays

open access: yes, 2007
Experimental results for the pseudoscalar decay constants f_{D} and f_{D_s} are reviewed. Semileptonic form factor results from D -> (pseudoscalar) l nu and D -> (vector) l nu decays are also reviewed.Comment: 8 pages, 4 figures, presented at the 11th ...
Ablikim   +36 more
core   +2 more sources

INVESTIGATING PSEUDOSCALAR AND SCALAR DARK MATTER [PDF]

open access: yesInternational Journal of Modern Physics A, 2006
In this paper another class of Dark Matter candidate particles — the pseudoscalar and scalar light bosonic candidates — is discussed. Particular care is devoted to the study of the processes for their detection (which only involves electrons and photons/X-rays) in a suitable underground experimental setup.
BERNABEI, RITA   +12 more
openaire   +4 more sources

Asymptotic Behavior of Saxion–Axion System in Stringy Quintessence Model

open access: yesFortschritte der Physik, Volume 72, Issue 11, November 2024.
Abstract The late time behavior of the slow‐roll parameter in the stringy quintessence model is studied when axion as well as saxion are allowed to move. Even though the potential is independent of the axion at tree level, the axion can move through its coupling to the saxion and the background geometry.
Min‐Seok Seo
wiley   +1 more source

Two-Point Correlators of Fermionic Currents in External Magnetic Field

open access: yesEPJ Web of Conferences, 2017
We study the two-point correlation functions under an influence of the constant homogeneous magnetic field. In addition to the correlators of scalar, pseudoscalar, vector and axial-vector fermionic currents, we calculate the non-diagonal one including ...
Dobrynina Alexandra   +3 more
doaj   +1 more source

Bounds on very weakly interacting ultra light scalar and pseudoscalar dark matter from quantum gravity

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
In this paper we consider very weakly interacting and ultra light scalar and pseudoscalar dark matter candidates. We show that quantum gravity has important implications for such models and that the masses of the singlet scalar and pseudoscalar fields ...
Xavier Calmet, Folkert Kuipers
doaj   +1 more source

Debajyoti Choudhury

open access: yes, 1992
Gluon fusion into a very heavy neutrino pair by Higgs exchange is shown to lead to substantial production cross sections at $pp$ supercolliders even without any extra generation of quarks.
Barger   +25 more
core   +1 more source

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