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We present the complete threshold enhanced predictions in QCD for the total cross section of gluino pair production at hadron colliders at next-to-next-to-leading order. Thanks to the computation of the required one-loop hard matching…

High Energy Physics - Phenomenology · Physics 2012-11-26 Ulrich Langenfeld , Sven-Olaf Moch , Torsten Pfoh

A model of $pp$ and $\bar{p}p$ elastic scattering developed previously to analyze ISR and SPS Collider data is extended to predict $pp$ elastic differential cross section at LHC at c.m. energy of 14 TeV and momentum transfer range $|t|=0$ -…

High Energy Physics - Phenomenology · Physics 2007-05-23 M. M. Islam

We discuss total cross-sections within the context of the QCD calculable mini-jet model, highlighting its successes and failures. In particular we show its description of $\gamma \gamma \to hadrons$ and compare it with OPAL and L3 data. We…

High Energy Physics - Phenomenology · Physics 2009-11-07 Rohini M. Godbole , A. Grau , G. Pancheri

Triggered by ongoing experimental analyses, we report on a study of the cross section ratio sigma(pp -> ttbb)/sigma(pp -> ttjj) at the next-to-leading order in QCD, focusing on both present and future collider energies: sqrt{s}= 7, 8, 13…

High Energy Physics - Phenomenology · Physics 2014-08-01 G. Bevilacqua , M. Worek

We present predictions on the total cross sections and on the ratio of the real part to the imaginary part of the elastic amplitude (rho parameter) for present and future pp and pbar p colliders, and on total cross sections for gamma p ->…

High Energy Physics - Phenomenology · Physics 2007-05-23 J. R. Cudell , V. V. Ezhela , P. Gauron , K. Kang , Yu. V. Kuyanov , S. B. Lugovsky , E. Martynov , B. Nicolescu , E. A. Razuvaev , N. P. Tkachenko

The analysis of the procedure of the determining the parameters of the hadron elastic scattering amplitude at high energy is presented. The exponential and non-exponential form of the scattering amplitude are taken into account. Especially,…

High Energy Physics - Experiment · Physics 2013-10-22 O. V. Selyugin

We show that the rising total cross section $\sigma(\gamma\gamma \to hadrons)$ recently observed by the L3 and OPAL Collaborations at LEP are fully consistent with the impact-picture for high-energy scattering. The impact picture is then…

High Energy Physics - Phenomenology · Physics 2009-12-15 C. Bourrely , J. Soffer , Tai Tsun Wu

To settle the question whether the growth with energy is universal for different hadronic total cross-sections, we present results from theoretical models for pion-proton, proton-proton and proton-antiproton total cross-sections. We show…

High Energy Physics - Phenomenology · Physics 2014-11-21 Agnes Grau , Giulia Pancheri , Olga Shekhovtsova , Yogendra N. Srivastava

Results from the large hadron collider (LHC) show that no available Monte Carlo simulation incorporates our pre-LHC knowledge of soft and hard diffraction in a way that could be reliably extrapolated to LHC energies. As a simulation is…

High Energy Physics - Phenomenology · Physics 2012-08-07 Konstantin Goulianos

A numerical program for the evaluation of the inclusive cross section for associated Higgs production with a massive weak gauge boson at hadron colliders is described, sigma(pp/pbar p -> HV), V=W,Z. The calculation is performed in the…

High Energy Physics - Phenomenology · Physics 2012-12-20 Oliver Brein , Robert V. Harlander , Tom J. E. Zirke

Inclusive single jet production in hadron collisions is considered. It is shown that the QCD parton model predicts a nonmonotonic dependence of the inclusive cross section on the fraction of the energy deposited in the jet registered, if it…

High Energy Physics - Phenomenology · Physics 2008-02-03 Victor T. Kim , Grigorii B. Pivovarov , James P. Vary

Recent results for the total and inelastic hadronic cross-sections from LHC experiments are compared with predictions from a single channel PDF driven eikonal mini-jet model and from an empirical model. The role of soft gluon resummation in…

High Energy Physics - Phenomenology · Physics 2017-09-20 Daniel A. Fagundes , Agnes Grau , Giulia Pancheri , Olga Shekhovtsova , Yogendra N. Srivastava

We calculate the probability of large rapidity gaps in high energy hadronic collisions using a model based on QCD mini-jets and soft gluon emission down into the infrared region. Comparing with other models we find a remarkable agreement…

High Energy Physics - Phenomenology · Physics 2009-01-16 R. M. Godbole , A. Grau , G. Pancheri , Y. N. Srivastava

We present our analysis on high energy hadron-hadron scattering in the framework of the holographic QCD. Combining the Brower-Polchinski-Strassler-Tan Pomeron exchange kernel and gravitational form factors of the involved hadrons which are…

High Energy Physics - Phenomenology · Physics 2020-04-07 Akira Watanabe , Mei Huang

We revisit scalar leptoquark pair-production at hadron colliders and significantly improve the level of precision of the cross section calculations. Apart from QCD contributions, we include lepton t-channel exchange diagrams that turn out…

High Energy Physics - Phenomenology · Physics 2020-07-01 Christoph Borschensky , Benjamin Fuks , Anna Kulesza , Daniel Schwartländer

Based on the statistical hadronization model, we obtain quantitative predictions for the relative abundances of hadron species in pp collisions at the LHC. By using the parameters of the model determined at sqrt s = 200 GeV, and…

High Energy Physics - Phenomenology · Physics 2011-01-28 F. Becattini , P. Castorina , A. Milov , H. Satz

We compare predictions for the W, Z, gg->H and t-tbar total cross sections at the Large Hadron Collider (LHC), for a centre-of-mass energy of 7 TeV, using the most recent publicly available next-to-leading order and next-to-next-to-leading…

High Energy Physics - Phenomenology · Physics 2011-09-16 G. Watt

The latest CTEQ6.6 parton distributions, obtained by global analysis of hard scattering data in the framework of general-mass perturbative QCD, are employed to study theoretical predictions and their uncertainties for significant processes…

High Energy Physics - Phenomenology · Physics 2008-11-26 P. M. Nadolsky , H. -L. Lai , Q. -H. Cao , J. Huston , J. Pumplin , D. Stump , W. -K. Tung , C. -P. Yuan

We show how to obtain the leading energy dependence of hadronic total cross sections, in the framework of the nonperturbative approach to soft high-energy scattering based on Wilson-loop correlation functions, if certain nontrivial…

High Energy Physics - Phenomenology · Physics 2014-03-20 Matteo Giordano , Enrico Meggiolaro

We present predictions on the total cross sections and on the ratio of the real part to the imaginary part of the elastic amplitude (rho parameter) for present and future pp and pbar p colliders, and on total cross sections for gamma p ->…

High Energy Physics - Phenomenology · Physics 2008-11-26 J. R. Cudell , V. V. Ezhela , P. Gauron , K. Kang , Yu. V. Kuyanov , S. B. Lugovsky , E. Martynov , B. Nicolescu , E. A. Razuvaev , N. P. Tkachenko