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We predict cross sections in deep inelastic scattering (DIS) for the production of two jets---one along the proton beam direction created by initial state radiation (ISR) and another created by final state radiation after the hard…

High Energy Physics - Phenomenology · Physics 2013-09-12 Daekyoung Kang , Christopher Lee , Iain W. Stewart

We demonstrate how to resum phase space logarithms in the Sterman-Weinberg (SW) dijet decay rate within the context of Soft Collinear Effective theory (SCET). An operator basis corresponding to two and three jet events is defined in SCET…

High Energy Physics - Phenomenology · Physics 2008-11-26 Michael Trott

The distributions of two-jet event shapes contain information on hadronization in QCD. Near the two-jet limit, these distributions can be described by convolutions of nonperturbative event shape functions with the same distributions…

High Energy Physics - Phenomenology · Physics 2008-11-26 Christopher Lee , George Sterman

We calculate the two-loop soft function for $pp \to jj$, $e^+e^- \to 4j$ or $e p \to 3j$ when the $N$-jettiness observable is measured. The result presented here makes up the necessary piece for realizing the full next-to-next-to-leading…

High Energy Physics - Phenomenology · Physics 2019-06-26 Shan Jin , Xiaohui Liu

In this paper, we explore the use of jet substructure as a way of probing phenomena which break the isotropic behavior of jets, such as jet propagation through an anisotropically flowing quark-gluon plasma or spin correlations. We introduce…

High Energy Physics - Phenomenology · Physics 2024-12-18 Weiyao Ke , John Terry , Ivan Vitev

We provide a quantum field theory based description of the nonperturbative effects from hadronization for soft drop groomed jet mass distributions using the soft-collinear effective theory and the coherent branching formalism. There are two…

High Energy Physics - Phenomenology · Physics 2025-07-04 André H. Hoang , Sonny Mantry , Aditya Pathak , Iain W. Stewart

We calculate the structure functions for unpolarized deep inelastic scattering of baryons using an AdS/QCD soft wall model that considers a dressed mass for the bulk fermionic fields. Considering the regime of large Bjorken parameter x, we…

High Energy Physics - Phenomenology · Physics 2015-05-30 Nelson R. F. Braga , Alfredo Vega

We study the structure of the flat space wavefunctional in scalar field theories with nonlinearly realized symmetries. These symmetries imply soft theorems that are satisfied by wavefunction coefficients in the limit where one of the…

High Energy Physics - Theory · Physics 2023-03-29 Noah Bittermann , Austin Joyce

A global fit for $\alpha_s(m_Z)$ is performed on available $e^+e^-$ data for the heavy jet mass distribution. The state-of-the-art theory prediction includes $\mathcal{O}(\alpha_s^3)$ fixed-order results, N$^3$LL$^\prime$ dijet resummation,…

High Energy Physics - Phenomenology · Physics 2026-05-05 Miguel A. Benitez , Arindam Bhattacharya , Andre H. Hoang , Vicent Mateu , Matthew D. Schwartz , Iain W. Stewart , Xiaoyuan Zhang

We compute the 1-jettiness soft function for the decay of a heavy quark into a light quark jet plus colorless particles at three-loop order in soft-collinear effective theory. The 1-jettiness measurement fixes the total small light-cone…

High Energy Physics - Phenomenology · Physics 2020-03-17 Robin Brüser , Ze Long Liu , Maximilian Stahlhofen

The production of hard photons in hadronic collisions is studied using Soft-Collinear Effective Theory (SCET). This is the first application of SCET to a physical, observable cross section involving energetic partons in more than two…

High Energy Physics - Phenomenology · Physics 2012-02-10 Thomas Becher , Matthew D. Schwartz

Soft theorems in gauge theory and gravity encode the universal properties of scattering amplitudes as the zero frequency limit of one or more external states is approached. When the participating particles are treated in the massless limit,…

High Energy Physics - Theory · Physics 2021-07-15 Nikhil Kalyanapuram

Jet vetoes play an important role in many analyses at the LHC. Traditionally, jet vetoes have been imposed using a restriction on the transverse momentum $p_{Tj}$ of jets. Alternatively, one can also consider jet observables for which…

High Energy Physics - Phenomenology · Physics 2020-03-20 Shireen Gangal , Jonathan R. Gaunt , Maximilian Stahlhofen , Frank J. Tackmann

There has recently been much interest in analytical computations of jet mass distributions with and without vetos on additional jet activity [1-6]. An important issue affecting such calculations, particularly at next-to-leading logarithmic…

High Energy Physics - Phenomenology · Physics 2012-03-16 Kamel Khelifa-Kerfa

We have calculated inclusive two-jet production in low $Q^2$ $ep$ collisions at O($\alpha\alpha_s^2$) superimposing direct and resolved contributions. The results are compared with recent experimental data from the ZEUS collaboration at…

High Energy Physics - Phenomenology · Physics 2016-09-01 M. Klasen , G. Kramer

LHC measurements involve cuts on several observables, but resummed calculations are mostly restricted to single variables. We show how the resummation of a class of double-differential measurements can be achieved through an extension of…

High Energy Physics - Phenomenology · Physics 2015-06-23 Massimiliano Procura , Wouter J. Waalewijn , Lisa Zeune

In this Letter we report the first calculation of all ${\cal O}(\alpha_s)$ medium-induced branching processes to any order in opacity. Our splitting functions results are presented as iterative solutions to matrix equations with initial…

High Energy Physics - Phenomenology · Physics 2019-06-19 Matthew D. Sievert , Ivan Vitev , Boram Yoon

Using the colour dipole picture of Deep Inelastic Scattering (DIS) and the Colour Glass Condensate effective theory, we study semi-inclusive jet production in DIS at small $x$ in the limit where the photon virtuality $Q^2$ is much larger…

High Energy Physics - Phenomenology · Physics 2025-02-24 Paul Caucal , Edmond Iancu , A. H. Mueller , Feng Yuan

We propose a new definition of a transverse-momentum-dependent (TMD) wave function with simpler soft subtraction for $k_T$ factorization of hard exclusive processes. The un-subtracted wave function involves two pieces of non-light-like…

High Energy Physics - Phenomenology · Physics 2015-06-03 Hsiang-nan Li , Yu-Ming Wang

We study the (exclusive) kT jet algorithm using effective field theory techniques. Regularizing the virtualities and rapidities of graphs in the soft-collinear effective theory (SCET), we are able to write the next-to-leading-order dijet…

High Energy Physics - Phenomenology · Physics 2012-04-20 William Man-Yin Cheung , Simon M. Freedman
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