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相关论文: Diffractive photoproduction of heavy quarks in had…

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We calculate the inclusive and diffractive photoproduction of heavy quarks in proton-proton collisions at Tevatron and LHC energies, where the photon reaches energies larger than those ones accessible at DESY-HERA. The integrated cross…

高能物理 - 唯象学 · 物理学 2009-09-02 V. P. Goncalves , M. V. T. Machado , A. R. Meneses

Heavy quarks are copiously produced in ultra-peripheral heavy ion collisions. In the strong electromagnetic fields, c c-bar and b b-bar are produced by photonuclear and two-photon interactions; hadroproduction can occur in grazing…

高能物理 - 唯象学 · 物理学 2011-01-25 Spencer R. Klein , Joakim Nystrand , Ramona Vogt

The diffractive heavy quark cross sections are estimated considering photon-Pomeron ($\gamma \pom$) interactions in hadron - hadron at RHIC, Tevatron, and CERN LHC energies. We assume the validity of the hard diffractive factorization and…

高能物理 - 唯象学 · 物理学 2015-06-03 V. P. Goncalves , M. M. Machado

In this letter we study the photoproduction of heavy quarks and vector mesons in the coherent proton-nucleus (pA) interactions for RHIC and LHC energies and analyze if these processes can be used to determine the QCD dynamics at high…

高能物理 - 唯象学 · 物理学 2011-01-25 V. P. Goncalves , M. V. T. Machado

We calculate the photoproduction of heavy quarks in proton-proton collisions at RHIC, Tevatron and LHC energies. The integrated cross section and the rapidity distributions for open charm and bottom production are computed employing sound…

高能物理 - 唯象学 · 物理学 2011-01-25 V. P. Goncalves , M. V. T. Machado

The photoproduction of quarkonium in coherent hadron-hadron (pp/pA/AA$) interactions for LHC energies is an important tool to investigate the QCD dynamics at high energies. In this paper we estimate the integrated cross section and rapidity…

高能物理 - 唯象学 · 物理学 2008-11-26 V. P. Goncalves , M. V. T. Machado

The inclusive diffractive quarkonium photoproduction in $pp$ and $pA$ collisions is investigated considering the Resolved Pomeron Model to describe the diffractive interaction. We estimate the rapidity and transverse momentum distributions…

高能物理 - 唯象学 · 物理学 2017-11-01 V. P. Goncalves , L. S. Martins , B. D. Moreira

In this work we analyse the possibility of constraining the QCD dynamics at high energies studying the heavy quark photoproduction at LHC in coherent interactions. The rapidity distribution and total cross section for charm and bottom…

高能物理 - 唯象学 · 物理学 2014-11-20 V. P. Goncalves , M. V. T. Machado , A. R. Meneses

Prompt photon production in hadronic collisions at the RHIC and the LHC energies is investigated within the QCD color dipole approach. Predictions for the nuclear modification factor in $pA$ collisions are evaluated based on parton…

高能物理 - 唯象学 · 物理学 2020-11-11 G. Sampaio dos Santos , G. Gil da Silveira , M. V. T. Machado

In this letter we estimate the contribution of the double diffractive processes for the diphoton production in $pp$ collisions at the Large Hadron Collider (LHC). The acceptance of the central and forward LHC detectors is taken into account…

高能物理 - 唯象学 · 物理学 2020-10-28 V. P. Goncalves , D. E. Martins , M. S. Rangel

The exclusive $Z^0$ photoproduction at high energies in $\gamma p (A)$, $p p$ and $AA$ collisions is investigate within the color dipole formalism. We generalize the description of the deeply virtual compton scattering (DVCS) process, which…

高能物理 - 唯象学 · 物理学 2014-11-18 V. P. Goncalves , M. V. T. Machado

In this paper we study the inelastic quarkonium photoproduction in coherent $pp/pPb/PbPb$ interactions. Considering the ultra relativistic hadrons as a source of photons, we estimate the total $ h_1 + h_2 \rightarrow h \otimes V + X$ ($V =…

高能物理 - 唯象学 · 物理学 2015-06-17 V. P. Goncalves , M. M. Machado

In this work we study the diffractive photoproduction of $J/\Psi$ in proton-proton, proton - nucleus and nucleus - nucleus collisions at LHC energies using the color dipole formalism and different models for the forward dipole - target…

高能物理 - 唯象学 · 物理学 2014-07-18 V. P. Goncalves , B. D. Moreira , F. S. Navarra

The diffractive vector meson photoproduction with hadron dissociation in coherent hadron-hadron interactions at LHC energies is studied assuming that the color singlet $t$-channel exchange carries large momentum transfer. We estimate the…

高能物理 - 唯象学 · 物理学 2015-05-18 V. P. Goncalves , W. K. Sauter

In this paper we present a comprehensive analysis of the inclusive heavy quark photoproduction in $pp$, $pPb$ and $PbPb$ collisions at Run 2 LHC energies using the Color Dipole formalism. The rapidity distributions and total cross sections…

高能物理 - 唯象学 · 物理学 2018-06-13 V. P. Goncalves , G. Sampaio dos Santos , C. R. Sena

In this paper we investigate the $\eta_c$ production by photon - photon and photon - hadron interactions in $pp$ and $pA$ collisions at the LHC energies. The inclusive and diffractive contributions for the $\eta_c$ photoproduction are…

高能物理 - 唯象学 · 物理学 2018-05-16 V. P. Goncalves , B. D. Moreira

The double coherent and non-coherent diffractive production of heavy quark - antiquark pairs ($Q \bar{Q}$) in heavy ion scattering at high energies (LHC) is considered. The total and differential cross sections of these processes with the…

We apply the target rest frame formalism to photon + heavy quark production cross section in hadronic collisions at high energies. We investigate the dependence of the production cross section on the photon and quark rapidities and…

高能物理 - 唯象学 · 物理学 2010-12-23 M. A. Betemps , M. V. T. Machado

An alternative process is presented for diffractive Higgs boson production in peripheral $pp$ collisions, where the particles interact through the Double Pomeron Exchange. The event rate is computed as a central-rapidity distribution for…

高能物理 - 唯象学 · 物理学 2009-11-13 M. B. Gay Ducati , G. G. Silveira

The inclusive $J/\Psi$ production by direct and resolved photoproduction in the $\gamma$p scattering is calculated based on the nonrelativistic quantum chromodynamics (NRQCD) factorization formalism, which is in good agreement with the…

高能物理 - 唯象学 · 物理学 2019-07-23 Yi Yang , Shaohong Cai , Yanbing Cai , Wenchang Xiang
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