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The transverse momentum distribution of the diffractive final state provides an interesting test of models of diffractive deep-inelastic scattering at HERA. We present a comparison of several colour-singlet exchange models with thrust…

High Energy Physics - Phenomenology · Physics 2007-05-23 J. C. Williams

We study a twist decomposition of diffractive structure functions in the diffractive deep inelastic scattering (DDIS) at HERA. At low Q2 and at large energy the data exhibit a strong excess, up to about 100%, above the twist 2 NLO DGLAP…

High Energy Physics - Phenomenology · Physics 2013-05-30 L. Motyka , M. Sadzikowski , W. Slominski

Unintegrated gluon distributions sensitive to the transverse spatial distribution of gluons in the proton are extracted from data on exclusive and diffractive final states at HERA in the dipole approach. These unintegrated gluon…

High Energy Physics - Phenomenology · Physics 2015-03-17 Prithwish Tribedy , Raju Venugopalan

This paper provides estimation and inference methods for a conditional average treatment effects (CATE) characterized by a high-dimensional parameter in both homogeneous cross-sectional and unit-heterogeneous dynamic panel data settings. In…

Machine Learning · Statistics 2022-12-13 Vira Semenova , Matt Goldman , Victor Chernozhukov , Matt Taddy

Different theoretical methods used for the description of diffractive processes in small-x deep inelastic scattering are reviewed. The semiclassical approach, where a partonic fluctuation of the incoming virtual photon scatters off a…

High Energy Physics - Phenomenology · Physics 2009-02-20 A. Hebecker

Deep-inelastic ep scattering data, taken with the H1 and ZEUS detectors at HERA, are used to study the means and distributions of the event shape variables thrust, jet broadening, jet mass, C-parameter and two kinds of differential two-jet…

High Energy Physics - Experiment · Physics 2007-05-23 K. Rabbertz , U. Wollmer

With the growing demand for renewable energy, countries are accelerating the construction of photovoltaic (PV) power stations. However, accurately forecasting power data for newly constructed PV stations is extremely challenging due to…

Computational Engineering, Finance, and Science · Computer Science 2025-07-18 Hang Fan , Weican Liu , Zuhan Zhang , Ying Lu , Wencai Run , Dunnan Liu

In this paper we present a comprehensive study of inclusive hadron production in DIS at low $x$. Properties of the hadron spectrum are different in different kinematic regions formed by three relevant momentum scales: photon virtuality…

High Energy Physics - Phenomenology · Physics 2013-05-30 Kirill Tuchin , Dajing Wu

A sample covariance matrix $\boldsymbol{S}$ of completely observed data is the key statistic in a large variety of multivariate statistical procedures, such as structured covariance/precision matrix estimation, principal component analysis,…

Methodology · Statistics 2021-04-20 Seongoh Park , Xinlei Wang , Johan Lim

We compute cross sections for incoherent and coherent diffractive J/$\Psi$ and $\Psi(2S)$ production in ultraperipheral heavy ion collisions. The dipole models used in these calculations are obtained by fitting the HERA deep inelastic…

High Energy Physics - Phenomenology · Physics 2014-06-12 T. Lappi , H. Mäntysaari

The final step of most large-scale structure analyses involves the comparison of power spectra or correlation functions to theoretical models. It is clear that the theoretical models have parameter dependence, but frequently the…

Cosmology and Nongalactic Astrophysics · Physics 2016-01-13 Martin White , Nikhil Padmanabhan

We describe the most recent data on the diffractive structure functions from the H1 and ZEUS Collaborations at HERA using four models. First, a Pomeron Structure Function (PSF) model, in which the Pomeron is considered as an object with…

High Energy Physics - Phenomenology · Physics 2010-03-25 C. Royon , L. Schoeffel , S. Sapeta , R. Peschanski , E. Sauvan

A measurement is presented of single- and double-differential dijet cross sections in diffractive deep-inelastic $ep$ scattering at HERA using data collected by the H1 experiment corresponding to an integrated luminosity of 290 pb^{-1}. The…

High Energy Physics - Experiment · Physics 2014-12-04 H1 Collaboration

We propose a unified approach which describes both structure functions in the small-$x$ region and diffractive production in $\gamma^*p$-interactions. It is shown that the model, based on reggeon calculus and a quark-parton picture of the…

High Energy Physics - Phenomenology · Physics 2009-10-31 A. Capella , E. G. Ferreiro , A. B. Kaidalov , C. A. Salgado

High-energy nucleon total cross sections are related to low-x DIS structure functions by using the additive quark model.

High Energy Physics - Phenomenology · Physics 2016-11-23 Francesco Giovanni Celiberto , Laszlo Jenkovszky , Volodymyr Myronenko

The small-$x$ evolution of protons is determined from numerical solutions of the JIMWLK equations, starting from an initial condition at moderate $x$ for a finite size proton. The resulting dipole amplitude is used to calculate the total…

High Energy Physics - Phenomenology · Physics 2018-08-22 Heikki Mäntysaari , Björn Schenke

The Bialas-Bzdak model of elastic proton-proton scattering assumes a purely imaginary forward scattering amplitude, which consequently vanishes at the diffractive minima. We extended the model to arbitrarily large real parts in a way that…

High Energy Physics - Phenomenology · Physics 2015-05-07 F. Nemes , T. Csörgő , M. Csanád

We calculate for the first time cross sections for single and central diffractive as well as exclusive diffractive production of dilepton pairs in proton-proton collisions. Several differential distributions are shown. The inclusive…

High Energy Physics - Phenomenology · Physics 2011-08-04 Gabriela Kubasiak , Antoni Szczurek

Structure function data together with other measurements from fixed-target deep inelastic scattering and hadron-hadron collider experiments which contribute to our knowledge of the parton density functions are reviewed. The inclusive…

High Energy Physics - Phenomenology · Physics 2008-11-26 Zhiqing Zhang

Deep-inelastic ep scattering data taken with the H1 detector at HERA and corresponding to an integrated luminosity of 106 pb^{-1} are used to study the differential distributions of event shape variables. These include thrust, jet…

High Energy Physics - Experiment · Physics 2012-08-27 H1 Collaboration