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We establish robust relations between Transverse Momentum Dependent distributions (TMDs) and collinear distributions. We define weighted integrals of TMDs that we call Transverse Momentum Moments (TMMs) and prove that TMMs are equal to…

High Energy Physics - Phenomenology · Physics 2025-01-27 Oscar del Rio , Alexei Prokudin , Ignazio Scimemi , Alexey Vladimirov

The strength of transverse flow is examined as a function of transverse momentum $p_t$ using a simple, transversely moving thermal model and a more realistic, relativistic transport model (ART). It is shown that the $p_t$ dependence reveals…

Nuclear Theory · Physics 2009-09-25 Bao-An Li , C. M. Ko , G. Q. Li

Since the start of the LHC heavy ion program, a multitude of rather different high transverse momentum (P_T) observables has become available to study the physics of the interaction of hard partons with a QCD medium. Similarly, multiple…

High Energy Physics - Phenomenology · Physics 2014-08-29 Thorsten Renk

A modification to the contransverse mass (MCT) technique for measuring the masses of pair-produced semi-invisibly decaying heavy particles is proposed in which MCT is corrected for non-zero boosts of the centre-of-momentum (CoM) frame of…

High Energy Physics - Phenomenology · Physics 2010-03-19 Giacomo Polesello , Daniel R. Tovey

We provide a concise overview on transverse momentum dependent (TMD) parton distribution functions, their application to topical issues in high-energy physics phenomenology, and their theoretical connections with QCD resummation, evolution…

We study the scaled transverse momentum spectra over a wide parameter space of state-of-the-art hydrodynamic simulation models in order to learn what information can be obtained from the shape of identified-particle spectra -- previously…

The effective cross section of double parton scattering in high-energy hadron collisions has been measured in proton--proton collisions, with significant variation among final-state observables, contrary to the idea of a universal value.…

High Energy Physics - Phenomenology · Physics 2026-05-14 Joao Vitor C. Lovato , Edgar Huayra , Emmanuel G. de Oliveira

We extend the range of possible applications of MT2 type analyses to decay chains with multiple invisible particles, as well as to asymmetric event topologies with different parent and/or different children particles. We advocate two…

High Energy Physics - Phenomenology · Physics 2015-06-12 Rakhi Mahbubani , Konstantin T. Matchev , Myeonghun Park

A new iteration method is proposed for analyzing both the multiplicities and the transverse momentum spectra measured only within a small rapidity interval and with low momentum limit without any inconsistency or ad hoc assumptions and…

Nuclear Theory · Physics 2016-01-26 Suk Choi , Kang Seog Lee

Measurements of inclusive observables, such as particle multiplicities and momentum spectra, have already delivered important information on soft-inclusive ("minimum-bias") physics at the Large Hadron Collider. In order to gain a more…

High Energy Physics - Phenomenology · Physics 2015-03-18 Kenneth Wraight , Peter Skands

Transverse momentum spectra of identified particles produced in heavy-ion collisions at the Large Hadron Collider are described with relativistic fluid dynamics. We perform a systematic comparison of experimental data for pions, kaons and…

High Energy Physics - Phenomenology · Physics 2020-06-18 D. Devetak , A. Dubla , S. Floerchinger , E. Grossi , S. Masciocchi , A. Mazeliauskas , I. Selyuzhenkov

Most traversability estimation techniques divide off-road terrain into traversable (e.g., pavement, gravel, and grass) and non-traversable (e.g., boulders, vegetation, and ditches) regions and then inform subsequent planners to produce…

Robotics · Computer Science 2024-09-27 Chenhui Pan , Aniket Datar , Anuj Pokhrel , Matthew Choulas , Mohammad Nazeri , Xuesu Xiao

This handbook provides a comprehensive review of transverse-momentum-dependent parton distribution functions and fragmentation functions, commonly referred to as transverse momentum distributions (TMDs). TMDs describe the distribution of…

At the Tevatron the transverse mass is used to separate on mass shell from off mass shell W production; and the rate of off mass shell W production gives a measure of the W width. We look at alternative variables to see if the separation of…

High Energy Physics - Phenomenology · Physics 2009-10-28 David J. Summers

We survey the current phenomenological status of semi-inclusive deep inelastic scattering at moderate hard scales and in the limit of very large transverse momentum. As the transverse momentum becomes comparable to or larger than the…

High Energy Physics - Phenomenology · Physics 2018-12-19 J. O. Gonzalez-Hernandez , T. C. Rogers , N. Sato , B. Wang

This paper describes an innovative way to optimize a multivariate classifier, in particular a Support Vector Machine algorithm, on a problem characterized by a biased training sample. This is possible thanks to the feedback of a…

High Energy Physics - Experiment · Physics 2014-07-02 Federico Sforza , Vittorio Lippi

In this work, the relative Underlying Event (UE) transverse multiplicity activity classifier ($R_{\rm {T}}$) is used to study the strange and multi-strange hadron production in proton-proton collisions. Our study with $R_{\rm {T}}$ would…

High Energy Physics - Phenomenology · Physics 2020-10-12 Prabhakar Palni , Arvind Khuntia , Paolo Bartalini

We study the transverse momentum distribution of hadrons within jets, where the transverse momentum is defined with respect to the standard jet axis. We consider the case where the jet substructure measurement is performed for an inclusive…

High Energy Physics - Phenomenology · Physics 2017-11-16 Zhong-Bo Kang , Xiaohui Liu , Felix Ringer , Hongxi Xing

We report the predictions of different Monte Carlo event generators including HIJING, Pythia, and QGSJETII in comparison with the experimental data measured by the CMS Collaboration at CERN in proton-proton ($pp$) collisions at…

High Energy Physics - Phenomenology · Physics 2022-04-25 Pei-Pin Yang , Muhammad Ajaz , Muhammad Waqas , Fu-Hu Liu , Mais K. Suleymanov

Given a reference model that includes all the available variables, projection predictive inference replaces its posterior with a constrained projection including only a subset of all variables. We extend projection predictive inference to…

Computation · Statistics 2021-09-13 Alejandro Catalina , Paul Bürkner , Aki Vehtari