Results 1 to 10 of about 55,775 (230)

Cross section measurements of the e + e − → D *+ D *− and e + e − → D *+ D − processes at center-of-mass energies from 4.085 to 4.600 GeV

open access: yesJournal of High Energy Physics, 2022
The Born cross sections of the e + e − → D *+ D *− and e + e − → D *+ D − processes are measured using e + e − collision data collected with the BESIII experiment at center-of-mass energies from 4.085 to 4.600 GeV, corresponding to an integrated ...
The BESIII collaboration   +561 more
doaj   +1 more source

Search for decays of the 125 GeV Higgs boson into a Z boson and a ρ or ϕ meson

open access: yesJournal of High Energy Physics, 2020
Decays of the 125 GeV Higgs boson into a Z boson and a ρ0(770) or ϕ(1020) meson are searched for using proton-proton collision data collected by the CMS experiment at the LHC at s $$ \sqrt{s} $$ = 13 TeV.
The CMS collaboration   +2384 more
doaj   +1 more source

Measurement of the forward η meson production rate in p-p collisions at s $$ \sqrt{\textrm{s}} $$ = 13 TeV with the LHCf-Arm2 detector

open access: yesJournal of High Energy Physics, 2023
The forward η mesons production has been observed by the Large Hadron Collider forward (LHCf) experiment in proton-proton collision at s $$ \sqrt{s} $$ = 13 TeV. This paper presents the measurement of the inclusive production rate of η in p T < 1.1 GeV/c,
O. Adriani   +28 more
doaj   +1 more source

Search for a pentaquark state decaying into pJ/ψ in Υ(1, 2S) inclusive decays at Belle

open access: yesJournal of High Energy Physics
Using the data samples of 102 million Υ(1S) and 158 million Υ(2S) events collected by the Belle detector, we search for a pentaquark state in the pJ/ψ final state from Υ(1, 2S) inclusive decays.
The Belle collaboration   +164 more
doaj   +1 more source

Measurement of e + e − → ωη′ cross sections at s $$ \sqrt{s} $$ = 2.000 to 3.080 GeV

open access: yesJournal of High Energy Physics
We measured the Born cross sections for the process e + e − → ωη′ at 22 center-of-mass energies from 2.000 to 3.080 GeV with the BESIII detector at the BEPCII collider. We observed a resonant structure with a statistical significance of 9.6σ.
The BESIII collaboration   +623 more
doaj   +1 more source

High-dimensional anomaly detection with radiative return in e+e− collisions

open access: yesJournal of High Energy Physics, 2022
Experiments at a future e + e − collider will be able to search for new particles with masses below the nominal centre-of-mass energy by analyzing collisions with initial-state radiation (radiative return).
Julia Gonski   +3 more
doaj   +1 more source

Measurement of the phase between strong and electromagnetic amplitudes in the decay J/ψ → ϕη

open access: yesJournal of High Energy Physics
The first direct measurement of the relative phase between the strong and electromagnetic amplitudes for a J/ψ decaying into a vector-pseudoscalar final state is performed using 26 energy points of e + e − annihilation data between 3.00 GeV and 3.12 GeV.
The BESIII collaboration   +670 more
doaj   +1 more source

Light neutral-meson production in pp collisions at $$\sqrt{\text{s}}$$ = 13 TeV

open access: yesJournal of High Energy Physics
The momentum-differential invariant cross sections of π 0 and η mesons are reported for pp collisions at $$\sqrt{s}$$ = 13 TeV at midrapidity (|y| < 0.8). The measurement is performed in a broad transverse-momentum range of 0.2 < p T < 200 GeV/c and 0.4 <
The ALICE collaboration   +1072 more
doaj   +1 more source

Preserving physically important variables in optimal event selections: a case study in Higgs physics

open access: yesJournal of High Energy Physics, 2020
Analyses of collider data, often assisted by modern Machine Learning methods, condense a number of observables into a few powerful discriminants for the separation of the targeted signal process from the contributing backgrounds.
Philipp Windischhofer   +2 more
doaj   +1 more source

Measurement of the Y(nS) polarizations in pp collisions at s=7 $$ \sqrt{s}=7 $$ and 8 TeV

open access: yesJournal of High Energy Physics, 2017
The polarization of the Y(1S), Y(2S) and Y(3S) mesons, produced in pp collisions at centre-of-mass energies s=7 $$ \sqrt{s}=7 $$ and 8 TeV, is measured using data samples collected by the LHCb experiment, corresponding to integrated luminosities of 1 and
The LHCb collaboration   +805 more
doaj   +1 more source

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