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The relativistic amplitudes of pion photoproduction are evaluated by dispersion relations at t=const. The imaginary parts of the amplitudes are taken from the MAID model covering the absorption spectrum up to center-of-mass energies W = 2.2…

Nuclear Theory · Physics 2009-11-11 B. Pasquini , D. Drechsel , L. Tiator

The method for evaluation of inclusive electron scattering observables in the resonance region from the experimental data is presented. The computer codes in the web page allow user to evaluate inclusive electron scattering, virtual…

High Energy Physics - Experiment · Physics 2019-10-02 A. A. Golubenko , V. V. Chesnokov , B. S. Ishkhanov , V. I. Mokeev

We describe the transverse momentum spectra of $\pi^\pm$, $K^\pm$, $p$, and $\bar{p}$ produced in proton-proton ($pp$) collisions at different collision energies by using a Tsallis-Pareto-type function, and obtain the yield ratios,…

High Energy Physics - Phenomenology · Physics 2019-03-13 Xing-Wei He , Hua-Rong Wei , Fu-Hu Liu

We consider the class of inclusive hadron collider processes in which one or more energetic jets are produced, possibly accompanied by colourless particles. We provide a general formulation of a slicing scheme for this class of processes,…

High Energy Physics - Phenomenology · Physics 2024-05-15 Luca Buonocore , Massimiliano Grazzini , Jürg Haag , Luca Rottoli , Chiara Savoini

In Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV, we report on a geometrical scaling in the transverse momentum ($p_{\rm T}$) spectra of inclusive charged hadrons at 0-5$\%$, 5-10$\%$, 10-20$\%$, 20-30$\%$, 30-40$\%$, 40-50$\%$,…

Nuclear Theory · Physics 2016-05-13 W. C. Zhang

A large set of cross sections for semi-inclusive electroproduction of charged pions ($\pi^\pm$) from both proton and deuteron targets was measured. The data are in the deep-inelastic scattering region with invariant mass squared $W^2$ > 4…

The reactions ee->ee+pi0+X and ee->ee+K0s+X are studied using data collected at LEP with the L3 detector at centre-of-mass energies between 189 and 202 GeV. Inclusive differential cross sections are measured as a function of the particle…

High Energy Physics - Experiment · Physics 2012-08-27 L3 Collaboration

We present a comprehensive overview of theory-data comparisons for inclusive jet production. Theory predictions are derived for recent parton distribution functions and compared with jet data from different hadron-induced processes at…

High Energy Physics - Phenomenology · Physics 2011-09-08 M. Wobisch , D. Britzger , T. Kluge , K. Rabbertz , F. Stober

Coherence phenomena, the increase with energy of coherence length and the non-universality of parton structure of the effective Pomeron are explained. New hard phenomena directly calculable in QCD such as diffractive electroproduction of…

High Energy Physics - Phenomenology · Physics 2008-11-26 Halina Abramowicz , Leonid Frankfurt , Mark Strikman

It is demonstrated that the strong power-like scaling violation in the transverse momentum distribution of inclusive hadron production, observed by CDF Collaboration in $\bar{p}p$ collisions at Tevatron is caused by contribution of weak…

High Energy Physics - Phenomenology · Physics 2017-08-23 B. L. Ioffe

The production of strange particles (kaons, hyperons) and hypernuclei in light charged particle induced reactions in the energy range of a few GeV (2-15 GeV) has become a topic of active research in several facilities (e.g., HypHI and PANDA…

Nuclear Theory · Physics 2018-11-06 J. Hirtz , J. -C. David , A. Boudard , J. Cugnon , S. Leray , I. Leya , D. Mancusi

Semi-inclusive processes are very promising to investigate $XYZ$ hadrons at the next generation of electron-hadron facilities, because they generally boast higher cross sections. We extend our formalism of exclusive photoproduction to…

High Energy Physics - Phenomenology · Physics 2022-11-08 JPAC Collaboration , D. Winney , A. Pilloni , V. Mathieu , A. N. Hiller Blin , M. Albaladejo , W. A. Smith , A. Szczepaniak

High transverse momentum pi0-mesons have been measured with the H1 detector at HERA in deep-inelastic ep scattering events at low Bjorken-x, down to x <~ 4.10^{-5}. The measurement is performed in a region of small angles with respect to…

High Energy Physics - Experiment · Physics 2010-03-25 C. Adloff

In an explicitly covariant light-front formalism, we analyze transition form factors between pseudoscalar and scalar mesons. Application is performed in case of the $B \to f_0(980)$ transition in the full available transfer momentum range…

High Energy Physics - Phenomenology · Physics 2007-05-23 O. M. A Leitner , B. El-Bennich , B. Loiseau , J. P. Dedonder

A scaling law analysis of the world data on inclusive large-pT hadron production in hadronic collisions is carried out. A significant deviation from leading-twist perturbative QCD predictions at next-to-leading order is reported. The…

High Energy Physics - Phenomenology · Physics 2014-11-20 Francois Arleo , Stanley J. Brodsky , Dae Sung Hwang , Anne M. Sickles

Inclusive production processes will be important for the first observations of $XYZ$ states at new generation electron-hadron colliders, as they generally benefit from larger cross sections than their exclusive counterparts. We make…

A phenomenological model which has had some success in explaining polarization phenomena and left-right asymmetry in inclusive proton-proton scattering is considered for reactions involving photons. In particular, the reactions (a) $ \gamma…

High Energy Physics - Phenomenology · Physics 2007-05-23 Virendra Gupta , C. J. Solano , H. S. Mani

This paper seeks to demonstrate that many of the existing mass-measurement variables proposed for hadron colliders (mT, mEff, mT2, missing pT, hT, rootsHatMin, etc.) are far more closely related to each other than is widely appreciated, and…

High Energy Physics - Phenomenology · Physics 2013-05-29 A. J. Barr , T. J. Khoo , P. Konar , K. Kong , C. G. Lester , K. T. Matchev , M. Park

In the heavy-quark limit, the hadronic matrix elements entering nonleptonic $B$-meson decays into two light mesons can be calculated from first principles including ``nonfactorizable'' strong-interaction corrections. The $B\to\pi K,\pi\pi$…

High Energy Physics - Phenomenology · Physics 2010-05-28 M. Beneke , G. Buchalla , M. Neubert , C. T. Sachrajda

This work presents the results of a revised analysis of the low-energy (pion laboratory kinetic energy T(sub pi) < 100 MeV) pi+ p data using recently obtained electromagnetic corrections. The measurements are analyzed assuming extended…

High Energy Physics - Phenomenology · Physics 2007-10-18 A. Gashi , E. Matsinos , G. C. Oades , G. Rasche , W. S. Woolcock