8,140 research outputs found
Double vector meson production in the International Linear Collider
In this paper we study double vector meson production in
interactions at high energies and, using the color dipole picture, estimate the
main observables which can be probed at the International Linear Collider
(ILC). The total
cross-sections for , , and are computed
and the energy and virtuality dependencies are studied in detail. Our results
demonstrate that the experimental analysis of this process is feasible at the
ILC and it can be useful to constrain the QCD dynamics at high energies.Comment: 11 pages, 8 figure
Double vector meson production in interactions at hadronic colliders
In this paper we revisit the double vector meson production in interactions at heavy ion collisions and present, by the first time,
predictions for the and production in proton --
nucleus and proton -- proton collisions. In order to obtain realistic
predictions for rapidity distributions and total cross sections for the double
vector production in ultra peripheral hadronic collisions we take into account
of the description of cross section at low
energies as well as its behaviour at large energies, associated to the gluonic
interaction between the color dipoles. Our results demonstrate that the double
production is dominated by the low energy behaviour of the cross section. In contrast, for the double
production, the contribution associated to the description of the QCD dynamics
at high energies contributes significantly, mainly in collisions.
Predictions for the RHIC, LHC, FCC and CEPC - SPPC energies are shown.Comment: 9 pages, 5 figures, 2 tables. arXiv admin note: text overlap with
arXiv:1504.0441
Exclusive photoproduction in hadronic collisions at CERN LHC energies
The exclusive photoproduction in proton-proton and proton -
nucleus collisions at LHC energies is investigated using the color dipole
formalism and considering different models for the wave function and
forward dipole - target scattering amplitude. Our goal is to update the color
dipole predictions and estimate the theoretical uncertainty present in these
predictions. We present predictions for the kinematical ranges probed by the
ALICE, CMS and LHCb Collaborations.Comment: 8 pages, 5 figures and 3 tables. Version to be published in Physics
Letters
Double vector meson production in photon - hadron interactions at hadronic colliders
In this paper we analyse the double vector meson production in photon --
hadron () interactions at collisions and present
predictions for the , and production
considering the double scattering mechanism. We estimate the total cross
sections and rapidity distributions at LHC energies and compare our results
with the predictions for the double vector meson production in
interactions at hadronic colliders. We present predictions for the different
rapidity ranges probed by the ALICE, ATLAS, CMS and LHCb Collaborations. Our
results demonstrate that the and production in
collisions is dominated by the double scattering mechanism, while the
two - photon mechanism dominates in collisions. Moreover, our results
indicate that the analysis of the production at LHC can be useful
to constrain the double scattering mechanism.Comment: 9 pages, 5 figures, 2 tables. Revised and enlarged version to be
published in the European Physical Journal
Exclusive vector meson production with a leading neutron in photon - hadron interactions at hadronic colliders
In this paper we study leading neutron production in photon - hadron
interactions which take place in and collisions at large impact
parameters. Using a model that describes the recent leading neutron data at
HERA, we consider exclusive vector meson production in association with a
leading neutron in collisions at RHIC and LHC energies. The total cross
sections and rapidity distributions of , and produced
together with a leading neutron are computed. Our results indicate that the
study of these processes is feasible and that it can be used to improve the
understanding of leading neutron processes and of exclusive vector meson
production.Comment: 8 pages, 3 figures, 2 table
Universal R-C crossover in current-voltage characteristics for unshunted array of overdamped Nb-AlO_x-Nb Josephson junctions
We report on some unusual behavior of the measured current-voltage
characteristics (CVC) in artificially prepared two-dimensional unshunted array
of overdamped Nb-AlO_x-Nb Josephson junctions. The obtained nonlinear CVC are
found to exhibit a pronounced (and practically temperature independent)
crossover at some current I_{cr}=\left(\frac{1}{2\beta_C}-1\right)I_C from a
resistance R dominated state with V_R=R\sqrt{I^2-I_C^2} below I_{cr} to a
capacitance C dominated state with V_C=\sqrt{\frac{\hbar}{4eC}} \sqrt{I-I_C}
above I_{cr}. The origin of the observed behavior is discussed within a
single-plaquette approximation assuming the conventional RSJ model with a
finite capacitance and the Ambegaokar-Baratoff relation for the critical
current of the single junction
Production of exotic charmonium in interactions at hadronic colliders
In this paper we investigate the Exotic Charmonium (EC) production in interactions present in proton-proton, proton-nucleus and
nucleus-nucleus collisions at the CERN Large Hadron Collider (LHC) energies as
well as for the proposed energies of the Future Circular Collider (FCC). Our
results demonstrate that the experimental study of these processes is feasible
and can be used to constrain the theoretical decay widths and shed some light
on the configuration of the considered multiquark states.Comment: 7 pages, 2 figures, 3 tables. v2: Revised version published in
Physical Review
Manifestation of geometric resonance in current dependence of AC susceptibility for unshunted array of Nb-AlOx-Nb Josephson junctions
A pronounced resonance-like structure has been observed in the current
dependence of AC susceptibility for two-dimensional array of unshunted
Nb-AlOx-Nb Josephson junctions. Using a single-plaquette approximation, we were
able to successfully fit our data assuming that resonance structure is related
to the geometric (inductive) properties of the array.Comment: to appear in Physica C (in press
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