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Two-particle correlations are a widely used tool for studying relativistic nuclear collisions. Multiplicity fluctuations comparing charge and particle species have been studied as a possible signal for Quark-Gluon Plasma (QGP) and the QCD…

Nuclear Theory · Physics 2023-01-09 Mary Cody , Sean Gavin , Brendan Koch , Mark Kocherovsky , Zoulfekar Mazloum , George Moschelli

We compute multi-gluon production in the Color Glass Condensate approach in dilute-dense collisions, p$A$, extending previous calculations up to four gluons. We include the contributions that are leading in the overlap area of the collision…

High Energy Physics - Phenomenology · Physics 2022-11-10 Pedro Agostini , Tolga Altinoluk , Néstor Armesto

A next-to-leading order correction to the high-energy factorization limit of radiation spectrum from an ultrarelativistic electron scattering in an external field is evaluated. Generally, it does not express through scattering…

High Energy Physics - Phenomenology · Physics 2017-10-25 M. V. Bondarenco

Starting with QCD, we derive an effective field theory description for forward scattering and factorization violation as part of the soft-collinear effective field theory (SCET) for high energy scattering. These phenomena are mediated by…

High Energy Physics - Phenomenology · Physics 2021-07-13 Ira Z. Rothstein , Iain W. Stewart

In the framework of the gluon-gluon fusion process for Higgs boson production there are two different prescriptions. They are given by the exact process where the gluons couple via top-quark loops to the Higgs boson and by the approximation…

High Energy Physics - Phenomenology · Physics 2009-11-11 J. Smith , W. L. van Neerven

The hypothesis of the multi peripheral model is extended to the hadron-nucleus interactions and then generalized to the nucleus-nucleus case. The processing of the model depends on input parameters that are extracted from the features of…

High Energy Physics - Phenomenology · Physics 2009-10-31 M. T. Hussein , N. M. Hassan , N. Elharby

We present a simple gluon production picture which is based on the McLerran-Venugopalan model and gluon BFKL evolution in relativistic heavy ion collision. Results for the multiplicity and transverse energy distribution in both the central…

High Energy Physics - Phenomenology · Physics 2009-11-11 Bo-Wen Xiao

High-energy antinucleus-nucleus collisions are studied in the extended multi-chain model. The event probability of inclusive process is calculated by means of the operator matrix in the moment space. Analytic forms for single-particle…

High Energy Physics - Phenomenology · Physics 2012-06-28 Hujio Noda , Shin-Ichi Nakariki , Tsutomu Tashiro

The semi-inclusive cross section of two-nucleon emission induced by neutrinos and antineutrinos is computed employing the relativistic mean field model of nuclear matter and the dynamics of meson exchange currents. Within this model we…

High Energy Physics - Phenomenology · Physics 2024-02-21 V. L. Martinez-Consentino , J. E. Amaro

The transverse momentum spectra of hadrons is calculated from the unintegrated gluon distribution (UGD) within the $k_T$-factorization framework at small $x$. Starting from $pp$ collisions, the modification caused by the nuclear medium is…

High Energy Physics - Phenomenology · Physics 2021-03-03 L. S. Moriggi , G. M. Peccini , M. V. T. Machado

The azimuthal collimation of di-hadrons with large rapidity separations in high multiplicity p+p collisions at the LHC is described in the Color Glass Condensate (CGC) effective theory [1] by N_c^2 suppressed multi-ladder QCD diagrams that…

High Energy Physics - Phenomenology · Physics 2013-05-30 Kevin Dusling , Raju Venugopalan

We present a complete systematically theoretical study of multifragmentation for asymmetric colliding nuclei for heavy-ion reactions in the energy range between 50 MeV/nucleon and 600 MeV/nucleon by using soft and hard equations of state.…

Nuclear Theory · Physics 2010-11-19 Varinderjit Kaur , Suneel Kumar

Particle correlations are very actively studied in heavy-ion collisions at ultra-relativistic energies. Here, an attempt is made at determining a proper reference for such studies, by taking properly into account the multiparticle…

Nuclear Theory · Physics 2008-11-26 Nicolas Borghini

The initial stages of relativistic heavy ion collisions are studied numerically in the framework of a 2+1 dimensional classical Yang-Mills theory. We calculate the energy and number densities and momentum spectra of the produced gluons. The…

High Energy Physics - Phenomenology · Physics 2009-11-10 T. Lappi

We calculate the classical gluon field of a fast projectile passing through a dense medium. We show that this allows us to calculate both the initial state gluon production in proton-nucleus collisions and the final state gluon radiation…

High Energy Physics - Phenomenology · Physics 2008-11-26 Yacine Mehtar-Tani

The nucleon energy-energy correlator (NEEC) was proposed in 2209.02080 as a new way of studying nucleon intrinsic dynamics. In this work, we present a detailed derivation of the factorization theorem that enables the measurement of the…

High Energy Physics - Phenomenology · Physics 2023-03-06 Haotian Cao , Xiaohui Liu , Hua Xing Zhu

We show that gluon saturation gives rise to a strong modification of the scaling in both the nuclear mass number $A$ and the virtuality $Q^2$ of the vector meson production cross-section in exclusive deep-inelastic scattering off nuclei. We…

Nuclear Theory · Physics 2018-05-29 Heikki Mäntysaari , Raju Venugopalan

Correlation measurements indicate that excess two particle correlations extend over causally disconnected rapidity ranges. Although, this enhancement is broad in relative rapidity $\eta=\eta_1 - \eta_2$, it is focused in a narrow region in…

Nuclear Theory · Physics 2009-11-03 George Moschelli , Sean Gavin

We discuss the inclusive dilepton cross section for proton (quark)-nucleus collisions at high energies in the very forward rapidity region. Starting from the calculation in the quasi-classical approximation, we include low-x evolution…

High Energy Physics - Phenomenology · Physics 2009-11-10 R. Baier , A. H. Mueller , D. Schiff

We present an analytical calculation of the covariance of the energy-momentum tensor associated to the gluon field produced in ultra-relativistic heavy ion collisions at early times, the Glasma. This object involves the two-point and…

High Energy Physics - Phenomenology · Physics 2019-05-14 Javier L. Albacete , Pablo Guerrero-Rodríguez , Cyrille Marquet