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The production of a pair of jets with large rapidity separation in hadron-hadron collisions, and of forward jets in deep inelastic scattering, can in principle be used to test the predictions of the BFKL equation. However in practice…

High Energy Physics - Phenomenology · Physics 2007-05-23 Lynne H. Orr , W. J. Stirling

We study high-energy jet production in the multi-Regge limit making use of the Monte Carlo event generator BFKLex which includes collinear improvements in the form of double-log contributions as presented in [1]. Making use of the anti-kt…

High Energy Physics - Phenomenology · Physics 2016-03-23 G. Chachamis , A. Sabio Vera

The agreement between calculations inspired by the resummation of energy logarithms, known as BFKL approach, and experimental data in the semi-hard sector of QCD has become manifest after a wealthy series of phenomenological analyses.…

High Energy Physics - Phenomenology · Physics 2021-09-09 Francesco Giovanni Celiberto

We complete the calculation of the next-to-leading kernel of the BFKL equation, by disentangling its energy-scale dependent part from the impact factor corrections in large-k dijet production. Using the irreducible part previously…

High Energy Physics - Phenomenology · Physics 2009-10-31 Marcello Ciafaloni , Gianni Camici

The production of supersymmetric stop-antistop pairs at the Large Hadron Collider (LHC) is studied including corrections from soft-gluon resummation up to next-to-next-to-leading logarithmic (NNLL) accuracy in the Mellin-space approach.…

High Energy Physics - Phenomenology · Physics 2016-05-31 Wim Beenakker , Christoph Borschensky , Raphael Heger , Michael Krämer , Anna Kulesza , Eric Laenen

We study the production of jets in hadronic collisions, by computing all contributions proportional to $\alpha_S^n\alpha^m$, with $n+m=2$ and $n+m=3$. These correspond to leading and next-to-leading order results, respectively, for…

High Energy Physics - Phenomenology · Physics 2017-05-24 Rikkert Frederix , Stefano Frixione , Valentin Hirschi , Davide Pagani , Hua-Sheng Shao , Marco Zaro

Jet angularities are a class of jet substructure observables where a continuous parameter is introduced in order to interpolate between different classic observables such as the jet mass and jet broadening. We consider jet angularities…

High Energy Physics - Phenomenology · Physics 2019-04-29 Zhong-Bo Kang , Kyle Lee , Xiaohui Liu , Felix Ringer

As a signal for the BFKL Pomeron in small-x deep inelastic $ep$ scattering, we calculate the azimuthal dependence of the inclusive cross section of forward jets relative to the outgoing electron. For not very large differences in rapidity…

High Energy Physics - Phenomenology · Physics 2014-11-17 J. Bartels , V. Del Duca , M. Wusthoff

The hadronic kt-spectrum inside a high energy jet is determined including corrections of relative magnitude O{\sqrt{\alpha_s}} with respect to the Modified Leading Logarithmic Approximation (MLLA), in the limiting spectrum approximation…

High Energy Physics - Phenomenology · Physics 2011-03-23 Redamy Perez Ramos , Francois Arleo , Bruno Machet

The process of jet-gap-jet (JGJ) production is briefly described. The JGJ scattering amplitude parametrisation is discussed. On the basis of full amplitude calculations, the parametrisation formulas for the leading logarithmic (LL) and…

High Energy Physics - Phenomenology · Physics 2017-12-11 M. Trzebinski , P. Swierska

We present a calculation of the full set of next-to-next-to-leading-order QED corrections to unpolarised M{\o}ller scattering. This encompasses photonic, leptonic, and non-perturbative hadronic corrections and includes electron mass effects…

High Energy Physics - Phenomenology · Physics 2022-02-28 Pulak Banerjee , Tim Engel , Nicolas Schalch , Adrian Signer , Yannick Ulrich

We present a calculation of pseudoscalar Higgs production in association with a jet at Next-to-Next-to Leading Order (NNLO) accuracy in QCD. We work in an effective field theory in which $m_t \rightarrow \infty$ resulting in effective…

High Energy Physics - Phenomenology · Physics 2024-05-06 Youngjin Kim , Ciaran Williams

We determine the jet vertex for Mueller-Navelet jets and forward jets in the small-cone approximation for two particular choices of jet algoritms: the kt algorithm and the cone algorithm. These choices are motivated by the extensive use of…

High Energy Physics - Phenomenology · Physics 2015-05-20 Dimitri Colferai , Alessandro Niccoli

We perform a detailed comparison of next-to-next-to-leading order (NNLO) QCD predictions for the W+jet and Z+jet processes with 7 TeV experimental data from ATLAS and CMS. We observe excellent agreement between theory and data for most…

High Energy Physics - Phenomenology · Physics 2016-06-27 Radja Boughezal , Xiaohui Liu , Frank Petriello

The production of a pair of jets with large rapidity separation in hadron-hadron collisions, and of forward jets in deep inelastic scattering, can in principle be used to test the predictions of the BFKL equation. However in practice…

High Energy Physics - Phenomenology · Physics 2007-05-23 L. H. Orr , W. J. Stirling

We study ratios of azimuthal-angle distributions in Mueller-Navelet jets after imposing a rapidity veto constraint: the minijet radiation activity is restricted to only allow final-state partons separated at least a distance in rapidity…

High Energy Physics - Phenomenology · Physics 2018-09-12 F. Caporale , F. G. Celiberto , G. Chachamis , D. Gordo Gómez , A. Sabio Vera

The total $\gamma^*\gamma^*$ cross-section is derived in the Leading Order QCD dipole picture of BFKL dynamics, and compared with the one from 2-gluon exchange. The Double Leading Logarithm approximation of the DGLAP cross-section is found…

High Energy Physics - Phenomenology · Physics 2014-11-17 M. Boonekamp , A. De Roeck , C. Royon , S. Wallon

Using the CGC effective theory together with the hybrid factorisation, we study forward dijet production in proton-nucleus collisions beyond leading order. In this paper, we compute the "real" next-to-leading order (NLO) corrections, i.e.…

High Energy Physics - Phenomenology · Physics 2021-03-17 Edmond Iancu , Yair Mulian

We calculate the cross section for $e^+ e^-$ annihilation into three jets for massive quarks at next-to-leading order in perturbative QCD, both on and off the $Z$ resonance. Our computation allows the implementation of any jet clustering…

High Energy Physics - Phenomenology · Physics 2009-10-30 Werner Bernreuther , Arnd Brandenburg , Peter Uwer

We discuss a recent study on high-energy jet production in the multi-Regge limit done with the use of the Monte Carlo event generator BFKLex which includes collinear improvements in the form of double-log contributions. We will show results…

High Energy Physics - Phenomenology · Physics 2016-10-06 G. Chachamis , A. Sabio Vera