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We explore an alternative process for the diffractive Higgs boson production in peripheral pp collisions arising from Double Pomeron Exchange in photon-proton interaction. We introduce the impact factor formalism in order to enable the…

高能物理 - 唯象学 · 物理学 2008-12-30 M. B. Gay Ducati , G. G. Silveira

In this letter we analyze the associated production of a vector meson with the bound - free $e^+e^-$ process in ultraperipheral $PbPb$ collisions through the double scattering mechanism for the energy of the Large Hadron Collider (LHC).…

高能物理 - 唯象学 · 物理学 2023-08-21 Celsina N. Azevedo , Victor P. Goncalves , Bruno D. Moreira

The central exclusive production of charged-hadron pairs in pp collisions at a centre-of-mass energy of 13 TeV is examined, based on data collected in a special high-$\beta^*$ run of the LHC. The nonresonant continuum processes are studied…

高能物理 - 实验 · 物理学 2024-06-19 CMS , TOTEM Collaborations

We describe pair-production models of spin-0 and spin-1/2 magnetic monopoles and high-electric-charge objects in proton-proton and heavy-ion collisions, considering both the Drell-Yan and the photon-fusion processes. In particular, we…

高能物理 - 唯象学 · 物理学 2022-02-28 Wen Yi Song , Wendy Taylor

It is shown that the existence of left-right asymmetry in single-spin inclusive Lambda production, together with the characteristic features of the data, should be considered as another clear signature for the existence of orbiting valence…

高能物理 - 唯象学 · 物理学 2009-12-30 C. Boros , Liang Zuo-tang

We report on our recent investigations in photonuclear production of heavy quarks and vector meson in ultraperipheral heavy ion collisions. In particular, our theoretical predictions are compared with the recent experimental measurements on…

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

In this paper we present a detailed comparison of the dijet production by photon -- photon, photon -- pomeron and pomeron -- pomeron interactions in $pp$, $pA$ and ${\rm AA}$ collisions at the LHC energy. The transverse momentum, pseudo --…

高能物理 - 唯象学 · 物理学 2017-10-18 E. Basso , V. P. Goncalves , A. K. Kohara , M. S. Rangel

Particle production mechanisms in proton+proton and heavy-ion collisions at the LHC energies are discussed. An attempt is made to connect p+p to heavy-ion collisions in understanding the final state observables. New emerging phenomena like…

高能物理 - 唯象学 · 物理学 2018-01-03 Raghunath Sahoo

The double meson production in ultraperipheral heavy ions collisions is addressed, focusing on the particular case of rho-J/Psi from two-photon reactions. The cross section at photon level is obtained using distinct parameterizations for…

高能物理 - 唯象学 · 物理学 2009-01-07 V. P. Goncalves , M. V. T. Machado

In ultra-peripheral collisions (UPCs) of relativistic heavy ions, photoproduction occurs when a photon emitted from one nucleus interacts with the other nucleus from the opposing beam, producing particles in the final state. Measurements of…

核实验 · 物理学 2024-05-07 Minjung Kim

The strong electromagnetic fields surrounding the Pb-ions accelerated at the CERN Large Hadron Collider (LHC) allow two-photon and photonuclear interactions to be studied in a so far unexplored kinematic regime. Exclusive photoproduction of…

核实验 · 物理学 2013-03-11 Joakim Nystrand

The exclusive photoproduction of upsilon states $\Upsilon(1S)$ and its radially excited states $\Upsilon(2S,3S)$ is investigated in the context of ultra-peripheral collisions at the LHC energies. Predictions are presented for their…

高能物理 - 唯象学 · 物理学 2016-11-23 M. B. Gay Ducati , F. Kopp , M. V. T. Machado , S. Martins

Photoproduction of vector mesons are computed in dipole model in proton-proton ultraperipheral collisions(UPCs) at the CERN Large Hadron Collider (LHC). The dipole model framework is employed in the calculations of vector mesons production…

高能物理 - 唯象学 · 物理学 2018-05-30 Ya-Ping Xie , Xurong Chen

We study the double heavy baryon $\Xi_{QQ'}$ and tetraquark $T_{QQ}$ production through photon-photon and photon-gluon fusion via ultraperipheral collisions at the LHC and FCC within the framework of nonrelativistic QCD factorization…

高能物理 - 唯象学 · 物理学 2024-04-03 Hao Yang , Jun Jiang , Bingwei Long

Rapidity distributions of vector mesons are computed in dipole model proton-lead ultraperipheral collisions(UPCs) at the CERN Larger Hadron Collider(LHC). The dipole model framework is implemented in the calculations of cross sections in…

高能物理 - 唯象学 · 物理学 2018-05-17 Ya-Ping Xie , Xurong Chen

Coherent peripheral collisions of atomic nuclei involve electromagnetic or long range hadronic interactions at impact parameters, where both nuclei survive intact. Recently such ultra-peripheral collisions were observed at RHIC. The effect…

核实验 · 物理学 2019-08-14 Pablo Yepes

Recent measurements of the asymmetries between Feynman $x$ distributions of strange and antistrange hadrons in $\pi^- A$ interactions show a strong effect as a function of $x_F$. We calculate strange hadron production in the context of the…

高能物理 - 唯象学 · 物理学 2014-11-17 T. D. Gutierrez , R. Vogt

We have investigated light nuclei pair photoproduction in relativistic heavy ion ultraperipheral collisions. As a first attempt, we employ our previously developed quantum electrodynamics model, which incorporates a wave-packet description…

高能物理 - 唯象学 · 物理学 2024-07-09 Jin-Yu Hu , Shuo Lin , Shi Pu , Qun Wang

The strong electromagnetic fields carried by relativistic highly charged ions make heavy-ion colliders attractive places to study photonuclear interactions and two-photon interactions. At RHIC, three experiments have studied coherent…

核实验 · 物理学 2008-10-21 Spencer R. Klein

In this paper we study azimuthal asymmetries of the muon pair production in ultraperipheral heavy ion collisions within the joint impact parameter and transverse momentum dependent framework. The final state QED radiation effects are…

高能物理 - 唯象学 · 物理学 2023-03-08 Ding Yu Shao , Cheng Zhang , Jian Zhou , Yajin Zhou