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Observations of the transversity parton distribution based on an analysis of pion-pair production in deep inelastic scattering off transversely polarized targets are presented. This extraction relies on the knowledge of dihadron…

High Energy Physics - Phenomenology · Physics 2011-06-30 A. Courtoy , Alessandro Bacchetta , Marco Radici

We present an extraction of the valence transversity parton distributions based on an analysis of pion-pair production in deep-inelastic scattering off transversely polarized targets. Recently released data for proton and deuteron targets…

High Energy Physics - Phenomenology · Physics 2015-06-12 Alessandro Bacchetta , A. Courtoy , Marco Radici

We present the first extraction of the transversity distribution in the framework of collinear factorization based on the global analysis of pion-pair production in deep-inelastic scattering off transversely polarized targets and in…

High Energy Physics - Phenomenology · Physics 2018-05-23 Marco Radici , Alessandro Bacchetta

We present the first extraction of the transversity distribution based on the global analysis of pion-pair production in deep-inelastic scattering and in proton-proton collisions with one transversely polarized proton. The extraction relies…

High Energy Physics - Phenomenology · Physics 2018-10-02 Marco Radici

We present an updated extraction of the transversity parton distribution based on the analysis of pion-pair production in deep-inelastic scattering off transversely polarized targets in collinear factorization. Data for proton and deuteron…

High Energy Physics - Phenomenology · Physics 2015-03-23 Marco Radici , A. Courtoy , Alessandro Bacchetta , Marco Guagnelli

We present preliminary results for an updated extraction of the transversity parton distribution based on the analysis of pion-pair production in deep-inelastic scattering off transversely polarized targets in collinear factorization. Data…

High Energy Physics - Phenomenology · Physics 2015-06-23 Marco Radici , A. Courtoy , Alessandro Bacchetta

We have updated our extraction of the transversity parton distribution based on the analysis of pion-pair production in deep-inelastic scattering off transversely polarized targets in collinear factorization. The most recent COMPASS data…

High Energy Physics - Phenomenology · Physics 2015-10-13 Marco Radici

The transversity was recently extracted from data on the production of hadron pairs in semi-inclusive deep-inelastic scattering. This analysis can be conveniently performed in the framework of collinear factorization where the elementary…

High Energy Physics - Phenomenology · Physics 2017-09-04 Marco Radici

We summarize the latest achievements about the extraction of the transversity parton distribution and proton tensor charge based on an analysis of pion-pair production in deep-inelastic scattering off transversely polarized targets.…

High Energy Physics - Phenomenology · Physics 2015-06-17 Marco Radici , Alessandro Bacchetta , A. Courtoy

We report on the extraction of dihadron fragmentation functions (DiFF) from the semiinclusive production of two hadron pairs in back-to-back jets in e+e- annihilation. A nonzero asymmetry in the correlation of azimuthal orientations of…

High Energy Physics - Phenomenology · Physics 2012-06-11 A. Courtoy , Alessandro Bacchetta , Marco Radici

In these proceedings, we propose an extraction of the valence transversity parton distributions. Based on an analysis of pion-pair production in deep-inelastic scattering off transversely polarized targets, this extraction of transversity…

High Energy Physics - Phenomenology · Physics 2013-06-28 A. Courtoy , Alessandro Bacchetta , Marco Radici

The observation of the quark transversity distribution requires another soft object sensitive to the quark's transverse spin. Dihadron fragmentation functions represent a convenient tool to analyze partonic spin, which can influence the…

High Energy Physics - Phenomenology · Physics 2017-08-23 Alessandro Bacchetta , Marco Radici

A short review of problems with parton distribution functions in nucleons, non-polarized and polarized, is given. The main part is devoted to the transversity distribution its possible measurement and its first experimental probe via spin…

High Energy Physics - Phenomenology · Physics 2009-11-07 A. V. Efremov

Transversity distribution is one of the three fundamental parton distributions that completely describe polarized spin 1/2 nucleon. Its chiral odd nature prevented for many years its experimental exploration, however presently we have…

High Energy Physics - Phenomenology · Physics 2013-04-03 Alexei Prokudin

A model for dihadron fragmentation functions is briefly outlined, that describes the fragmentation of a quark in two unpolarized hadrons. The parameters are tuned to the output of the PYTHIA event generator for two-hadron semi-inclusive…

High Energy Physics - Phenomenology · Physics 2008-11-26 Marco Radici

We perform a comprehensive study within quantum chromodynamics (QCD) of dihadron observables in electron-positron annihilation, semi-inclusive deep-inelastic scattering, and proton-proton collisions, including recent cross section data from…

High Energy Physics - Phenomenology · Physics 2024-03-01 C. Cocuzza , A. Metz , D. Pitonyak , A. Prokudin , N. Sato , R. Seidl

We consider the azimuthal correlations of charged hadron pairs with large total transverse momentum and small relative momentum, produced in proton-proton collisions with one transversely polarized proton. One of these correlations directly…

High Energy Physics - Phenomenology · Physics 2016-08-10 Marco Radici , Alessandro M. Ricci , Alessandro Bacchetta , Asmita Mukherjee

The transversity distribution was recently extracted from deep-inelastic scattering processes producing hadron pairs in the final state. Together with a specific chiral-odd di-hadron fragmentation function, it is involved in the elementary…

High Energy Physics - Phenomenology · Physics 2016-11-11 Marco Radici

We discuss in detail the option to access the transversity distribution function $h_1(x)$ by utilizing the analyzing power of interference fragmentation functions in two-pion production inside the same current jet. The transverse…

High Energy Physics - Phenomenology · Physics 2009-11-07 M. Radici , R. Jakob , A. Bianconi

We present a point-by-point determination of the valence transversity distributions from two different types of processes: single-hadron production and dihadron production, both in semi-inclusive deep inelastic scattering and e+e-…

High Energy Physics - Phenomenology · Physics 2015-06-23 Anna Martin , Franco Bradamante , Vincenzo Barone
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