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Energetic quarks and gluons lose energy as they traverse the hot and dense medium created in high-energy heavy-ion collisions at the BNL Relativistic Heavy Ion Collider (RHIC) and the CERN Large Hadron Collider (LHC). The nuclear…

Nuclear Theory · Physics 2025-04-24 Thomas Marshall , Philip Suh , Gang Wang , Huan Zhong Huang

We investigate the effect of energy loss of jets in high energy heavy ion collisions by using a full three-dimensional space-time evolution of a fluid combined with (mini-)jets that are explicitly evolved in space-time. In order to fit the…

High Energy Physics - Phenomenology · Physics 2009-11-07 Tetsufumi Hirano , Yasushi Nara

Recognized as important interstellar constituents, polycyclic aromatic hydrocarbons (PAHs) have been intensively studied in astrochemistry and their spectroscopy, thermodynamics, dynamics, and fragmentations are now amply documented. There…

Chemical Physics · Physics 2017-06-13 Georges Trinquier , Aude Simon , Mathias Rapacioli , Florent Xavier Gadéa

The primary epoch of planetary accretion concludes with giant impacts - highly energetic collisions between proto-planets that can play a key role in shaping a planet's inventory of volatile elements. Previous work has shown that single…

Earth and Planetary Astrophysics · Physics 2025-05-14 Matthew J. Roche , Simon J. Lock , Jingyao Dou , Philip J. Carter , Jacob A. Kegerreis , Zoë M. Leinhardt

Partons, produced in the early stages of heavy-ion collisions, lose energy while propagating through the collision medium. This energy loss can be studied by comparing particle yields in different systems (pp, p--Pb, Pb--Pb). In addition,…

High Energy Physics - Experiment · Physics 2019-08-13 Redmer Alexander Bertens

Studies of the production of heavy-flavour baryons are of prominent importance to investigate hadronization mechanisms at the LHC, in particular through the study of the evolution of the baryon-over-meson production ratio. Measurements…

High Energy Physics - Experiment · Physics 2022-09-21 Jianhui Zhu

By using a Coulomb potential modified by the interaction between the magnetic moments of the electron and proton, we have calculated the energy levels of a hydrogen atom. We have obtained fine structure, hyperfine structure and the Lamb…

General Physics · Physics 2015-10-20 Voicu Dolocan

Jets in the vacuum correspond to multi-parton configurations that form via a branching process sensitive to the soft and collinear divergences of QCD. In heavy-ion collisions, energy loss processes that are stimulated via interactions with…

High Energy Physics - Phenomenology · Physics 2020-09-30 Yacine Mehtar-Tani , Daniel Pablos , Konrad Tywoniuk

We argue that measurements of forward neutrons from nuclear breakup in inclusive high energy photon-nucleus ($\gamma A$) scattering provide a novel way to study small-$x$ dynamics of QCD in heavy-ion ultraperipheral collisions (UPCs). Using…

High Energy Physics - Phenomenology · Physics 2024-07-03 M. Alvioli , V. Guzey , M. Strikman

We confront the hypothesis of chemical freeze-out in ultra-relativistic heavy-ion collisions with the hypothesis of large modifications of hadron masses in nuclear medium. We find that the thermal-model predictions for the ratios of…

Nuclear Theory · Physics 2009-10-31 W. Florkowski , W. Broniowski

Anion and cation emission following water dissociation was studied for 6.6-keV $^{16}$O$^{+}$ + H$_{2}$O collisions. Absolute cross sections for the emission of all positively and negatively charged fragments, differential in both energy…

The transition from a once-dense Martian atmosphere to the thin one observed today implies a substantial loss of carbon, either through atmospheric escape or surface deposition. Accurately modeling this carbon escape necessitates accounting…

Earth and Planetary Astrophysics · Physics 2025-10-01 Cheikh T. Bop , Marko Gacesa

Charged-particle spectra associated with direct photon ($\gamma_{dir} $) and $\pi^0$ are measured in $p$+$p$ and Au+Au collisions at center-of-mass energy $\sqrt{s_{_{NN}}}=200$ GeV with the STAR detector at RHIC. A hower-shape analysis is…

Nuclear Experiment · Physics 2014-11-20 The STAR Collaboration , B. I. Abelev

Results for the cross sections of the exclusive 16O(e,e'pn)14N and 16O(gamma,pn)14N knockout reactions are presented and discussed in different kinematics. In comparison with earlier work, a complete treatment of the center-of-mass (CM)…

Nuclear Theory · Physics 2008-11-26 Carlotta Giusti , Franco Davide Pacati , Michael Schwamb , Sigfrido Boffi

Wildfire smoke is a health hazard as it contains a mixture of carcinogenic volatile compounds and fine particulate matter. In particular, exposure to polycyclic aromatic hydrocarbons (PAHs) is a major concern, since these compounds have…

While experimental observations, such as the mass hierarchy effect, are attributed and analyzed within radiative models, their interpretation crucially depends on collisional energy loss contribution, which is often neglected in such…

High Energy Physics - Phenomenology · Physics 2022-07-20 Bojana Ilic , Magdalena Djordjevic

We present a model for the hydrogenation states of Polycyclic Aromatic Hydrocarbons (PAHs) in the diffuse interstellar medium. First, we study the abundance of hydrogenation and charge states of PAHs due to photo-ionization,…

Astrophysics · Physics 2007-05-23 My Ha Vuong , Bernard H. Foing

It is shown that the M$^{2+}$ ion yield in the double photoionization of the aromatic hydrocarbons, pyrene and coronene, can be expressed as a superposition of a contribution from a resonance involving carbon atoms on the perimeter and…

Chemical Physics · Physics 2020-01-23 David L. Huber , Ralf Wehlitz

In the past decade the observation of cross section modification for leading hadrons, heavy flavor and two particle correlations in heavy ion collisions has provided important insights into the dynamics of parton propagation in dense…

High Energy Physics - Phenomenology · Physics 2015-06-23 Ivan Vitev

We investigate the effect of chemical freeze-out on identified particle spectra at 200AGeV Au-Au Collisions at RHIC, by utilizing a full three-dimensional hydrodynamical calculation. The hydrodynamical code SPheRIO we employed is based on…