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A leading-twist factorization formula is derived for the longitudinal structure function in the x -->1 limit of deeply inelastic scattering. This is achieved by defining a new jet function which is gauge independent and probes the…

High Energy Physics - Phenomenology · Physics 2007-05-23 R. Akhoury , M. G. Sotiropoulos

Electroweak Sudakov corrections of the form alpha^n log^m s/M_{W,Z}^2 are summed using renormalization group evolution in soft-collinear effective theory (SCET). Results are given for the scalar, vector and tensor form-factors for fermion…

High Energy Physics - Phenomenology · Physics 2008-11-26 Jui-yu Chiu , Frank Golf , Randall Kelley , Aneesh V. Manohar

This talk discusses the effective field theory view of deep inelastic scattering. In such an approach, the standard factorization formula of a hard coefficient multiplied by a parton distribution function arises from matching of QCD onto an…

High Energy Physics - Phenomenology · Physics 2014-11-21 Gil Paz

We compute the $e^+ e^-$ C-parameter distribution using the Soft-Collinear Effective Theory with a resummation to N${}^3$LL$^\prime$ accuracy of the most singular partonic terms. This includes the known fixed-order QCD results up to ${\cal…

High Energy Physics - Phenomenology · Physics 2015-05-27 André H. Hoang , Daniel W. Kolodrubetz , Vicent Mateu , Iain W. Stewart

We compute cross sections for two-jet production in deep inelastic scattering (DIS), with one jet from initial state radiation (ISR) and the other from final state radiation, with a summation of large logarithms up to…

High Energy Physics - Phenomenology · Physics 2013-08-22 Daekyoung Kang , Christopher Lee , Iain W. Stewart

We present the first complete NLO prediction with full jet algorithm implementation for the single inclusive jet production in $pA$ collisions within the CGC effective theory. Our prediction is fully differential over the final state…

High Energy Physics - Phenomenology · Physics 2022-12-06 Hao-yu Liu , Kexin Xie , Zhongbo Kang , Xiaohui Liu

The combination of collinear factorization with effective field theory originally developed for soft interactions of heavy quarks provides the foundations of the theory of exclusive and semi-inclusive B decays. In this article I summarize…

High Energy Physics - Phenomenology · Physics 2015-01-30 M. Beneke

We consider the longitudinal momentum distribution of hadrons inside jets in proton-proton collisions. At partonic threshold large double logarithmic corrections arise which need to be resummed to all orders. We develop a factorization…

High Energy Physics - Phenomenology · Physics 2020-03-18 Tom Kaufmann , Xiaohui Liu , Asmita Mukherjee , Felix Ringer , Werner Vogelsang

Using effective theories for jets and heavy quarks it is possible to prove that the double differential top-antitop invariant mass distribution for the process $e^+e^-\to t\bar t$ in the resonance region for c.m. energies $Q$ much larger…

High Energy Physics - Phenomenology · Physics 2009-02-16 Sean Fleming , Andre H. Hoang , Sonny Mantry , Iain W. Stewart

We use a direct QCD approach to carry out the next-to-next-to-leading logarithmic (NNLL) resummation for observables groomed with the modified mass-drop tagger (Soft Drop $\beta=0$). We focus on observables which are additive given an…

High Energy Physics - Phenomenology · Physics 2023-10-30 Mrinal Dasgupta , Basem Kamal El-Menoufi , Jack Helliwell

In factorization formulae for cross sections of scattering processes, final-state jets are described by jet functions, which are a crucial ingredient in the resummation of large logarithms. We present an approach to calculate generic…

High Energy Physics - Phenomenology · Physics 2020-12-02 Avanish Basdew-Sharma , Franz Herzog , Solange Schrijnder van Velzen , Wouter J. Waalewijn

We discuss how to construct a simple and easy-to-use helicity operator basis in Soft-Collinear Effective Theory (SCET), for which the hard Wilson coefficients from matching QCD onto SCET are directly given in terms of the color-ordered QCD…

High Energy Physics - Phenomenology · Physics 2012-11-13 Iain W. Stewart , Frank J. Tackmann , Wouter J. Waalewijn

We analyze the transverse momentum broadening in the absence of radiation of an energetic parton propagating through quark-gluon plasma via Soft Collinear Effective Theory (SCET). We show that the probability for picking up transverse…

High Energy Physics - Phenomenology · Physics 2011-07-28 Francesco D'Eramo , Hong Liu , Krishna Rajagopal

Gauge invariance in soft-collinear effective theory (SCET) is discussed in regular (covariant) and singular (light-cone) gauges. It is argued that SCET, as it stands, is not capable to define in a gauge invariant way certain…

High Energy Physics - Phenomenology · Physics 2011-01-04 Ahmad Idilbi , Ignazio Scimemi

We present predictions of two event shape distributions, the light hemisphere mass and the narrow jet broadening, to next-to-leading logarithmic order. We apply the coherent branching formalism to resum the leading O(alphas^n L^{2n-1}) and…

High Energy Physics - Phenomenology · Physics 2010-02-03 S. J. Burby , E. W. N. Glover

The Wilson Coefficients for all 4-parton operators which arise in matching QCD to Soft-Collinear Effective Theory (SCET) are computed at 1-loop. Any dijet observable calculated in SCET beyond leading order will require these results. The…

High Energy Physics - Phenomenology · Physics 2012-04-18 Randall Kelley , Matthew D. Schwartz

We present a comprehensive theoretical study of spin correlations in $\Lambda\bar{\Lambda}$ production from $e^+e^-$ annihilation, providing the theoretical predictions for the Belle II experiment. Using soft-collinear effective theory, we…

High Energy Physics - Phenomenology · Physics 2025-11-18 Shi-Jia Lin , Ming-Jun Liu , Ding Yu Shao , Shu-Yi Wei

Jet substructure has emerged as a critical tool for LHC searches, but studies so far have relied heavily on shower Monte Carlo simulations, which formally approximate QCD at leading-log level. We demonstrate that systematic higher-order QCD…

High Energy Physics - Phenomenology · Physics 2012-09-18 Ilya Feige , Matthew D. Schwartz , Iain W. Stewart , Jesse Thaler

We examine the endpoint region of inclusive deep inelastic scattering at next-to-leading power (NLP). Using a soft-collinear effective theory approach with no explicit soft or collinear modes, we discuss the factorization of the cross…

High Energy Physics - Phenomenology · Physics 2023-04-24 Michael Luke , Jyotirmoy Roy , Aris Spourdalakis

We derive a factorization formula for boosted double resonant top-antitop pair production in $e^+e^-$ annihilation with a semileptonic top quark decay in the phase space region where the $b$-jet invariant mass is small. The decaying top…

High Energy Physics - Phenomenology · Physics 2026-02-11 Andre H. Hoang , Christoph Regner
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