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Double deeply virtual Compton scattering (DDVCS) is the process where an electron scatters off a nucleon and produces a lepton pair. The main advantage of this process in contrast with deeply virtual and timelike Compton scatterings (DVCS…

High Energy Physics - Phenomenology · Physics 2023-04-11 K. Deja , V. Martinez-Fernandez , B. Pire , P. Sznajder , J. Wagner

We evaluate the kinematic distributions in phase space of 4-parton final-state subprocesses produced by double parton scattering, and we contrast these with the final-state distributions that originate from conventional single parton…

High Energy Physics - Phenomenology · Physics 2010-05-28 Edmond L. Berger , C. B. Jackson , Gabe Shaughnessy

We present a new framework for computing resummed and matched distributions in processes with many hard QCD jets. The intricate color structure of soft gluon emission at large angles renders resummed calculations highly non-trivial in this…

High Energy Physics - Phenomenology · Physics 2015-02-19 Erik Gerwick , Stefan Hoeche , Simone Marzani , Steffen Schumann

We demonstrate that at sufficiently high energies where the eikonal regime is established for hadronic interactions, the double scattering subprocess can be clearly identified and isolated in quasi-elastic deuteron electro-disintegration…

Nuclear Theory · Physics 2024-02-22 Werner U Boeglin , Misak M Sargsian

We present a new parton-shower algorithm. Borrowing from the basic ideas of dipole cascades, the evolution variable is judiciously chosen as the transverse momentum in the soft limit. This leads to a very simple analytic structure of the…

High Energy Physics - Phenomenology · Physics 2015-10-28 Stefan Höche , Stefan Prestel

We explore the physics of the parton-hadron duality in the nucleon structure functions appearing in lepton-nucleon scattering. We stress that the duality allows one to extract the higher-twist matrix elements from data in the resonance…

High Energy Physics - Phenomenology · Physics 2009-10-28 Xiangdong Ji , Peter Unrau

We derive an evolution equation describing the high energy behavior of the cross section for the single diffractive dissociation in deep inelastic scattering on a hadron or a nucleus. The evolution equation resums multiple BFKL pomeron…

High Energy Physics - Phenomenology · Physics 2009-10-31 Yuri V. Kovchegov , Eugene Levin

This paper is the second in a two-part exposition on {\it surface-directed spinodal decomposition} (SDSD), i.e., the interplay of kinetics of wetting and phase separation at a surface which is wetted by one of the components of a binary…

Statistical Mechanics · Physics 2020-08-25 Prasenjit Das , Prabhat K. Jaiswal , Sanjay Puri

We investigate the energy evolution of the azimuthal spin asymmetries in semi-inclusive hadron production in deep inelastic scattering (SIDIS) and Drell-Yan lepton pair production in pp collisions. The scale dependence is evaluated by…

High Energy Physics - Phenomenology · Physics 2013-08-14 Peng Sun , Feng Yuan

We extend our previous studies of double-parton scattering (DPS) to simultaneous production of $c \bar c$ and $b \bar b$ and production of two pairs of $b \bar b$. The calculation is performed within factorized ansatz. Each parton…

High Energy Physics - Phenomenology · Physics 2018-05-23 Rafal Maciula , Antoni Szczurek

One possible evolutionary scenario of the dense gluon system produced in an ultrarelativistic heavy ion collision is the bottom-up thermalization scenario, which describes the dynamics of the system shortly after the collision via the decay…

High Energy Physics - Phenomenology · Physics 2015-09-09 Vladimir Khachatryan , Mickey Chiu , Thomas K. Hemmick

A determinantal point process (DPP) is an ensemble of random nonnegative-integer-valued Radon measures, whose correlation functions are all given by determinants specified by an integral kernel called the correlation kernel. First we show…

Probability · Mathematics 2020-03-11 Makoto Katori

Dilepton and photon production in heavy-ion collisions at SPS energies is studied in the relativistic transport model that incorporates self-consistently the change of hadron masses in dense matter. It is found that the dilepton spectra in…

Nuclear Theory · Physics 2007-05-23 G. Q. Li , G. E. Brown , C. Gale , C. M. Ko

Double parton scattering events are directly sensitive to the correlations between two partons inside a proton and can answer fundamental questions on the connections between the proton constituents. In this chapter, the different types of…

High Energy Physics - Phenomenology · Physics 2018-01-11 Tomas Kasemets , Sergio Scopetta

When the initial state evolution of a parton shower is organized according to the standard "backward evolution'' prescription, ratios of parton distribution functions appear in the splitting probabilities. The shower thus organized evolves…

High Energy Physics - Phenomenology · Physics 2015-06-18 Zoltan Nagy , Davison E. Soper

Double deeply virtual Compton scattering (DDVCS) is the process where an electron scatters off a nucleon and produces a lepton pair. The main advantage of this process in contrast with deeply virtual and timelike Compton scatterings (DVCS…

High Energy Physics - Phenomenology · Physics 2023-05-09 K. Deja , V. Martinez-Fernandez , B. Pire , P. Sznajder , J. Wagner

We consider the double parton scattering (DPS) initiated by direct photons in $\gamma p$ and $\gamma A$ collisions. We extend the previously known results for photoproduction to the case of electroproduction with nonzero photon virtuality…

High Energy Physics - Phenomenology · Physics 2025-03-19 B. Blok , R. Segev

Using the Drell-Yan process in hadron-nucleus collisions and deeply inelastic lepton-nucleus scattering (DIS) as examples, I show that the transverse momentum broadening can be expressed in terms of four-parton correlation functions. I…

High Energy Physics - Phenomenology · Physics 2007-05-23 Xiaofeng Guo

We present a model for dihadron fragmentation functions, describing the fragmentation of a quark into two unpolarized hadrons. We tune the parameters of our model to the output of the PYTHIA event generator for two-hadron semi-inclusive…

High Energy Physics - Phenomenology · Physics 2008-11-26 Alessandro Bacchetta , Marco Radici

It is proposed that soft particle production in hadronic collisions is dominated by multiple gluon exchanges between partons from the colliding hadrons, followed by radiation of hadronic clusters from the coloured partons distributed…

High Energy Physics - Phenomenology · Physics 2009-11-10 A. Bialas , M. Jezabek