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Related papers: Unpolarized Dihadron Fragmentation Functions in No…

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We investigate the unpolarized pion and kaon fragmentation functions using the nonlocal chiral-quark model. In this model the interactions between the quarks and pseudoscalar mesons is manifested nonlocally. In addition, the explicit flavor…

High Energy Physics - Phenomenology · Physics 2015-06-15 Dong Jing Yang , Fu Jiun Jiang , Chung Wen Kao , Seung il Nam

We estimate the unpolarized dihadron fragmentation functions (uDiFFs) within the framework of the single-cascade jet algorithm. We first obtain the elementary fragmentation functions generating the single hadron fragmentation functions by…

High Energy Physics - Phenomenology · Physics 2020-01-01 Dong Jing Yang , Chung Wen Kao , Seung-il Nam

In this talk we present our recent studies for the unpolarized fragmentation functions for the pion and kaon, employing the nonlocal chiral quark model, which manifests the nonlocal interaction between the quarks and pseudoscalar mesons, in…

High Energy Physics - Phenomenology · Physics 2015-05-30 Seung-il Nam , Chung-Wen Kao , Byung-Geel Yu

We study the dihadron fragmentation functions (DiFF) of longitudinally polarized quarks into pion pairs. The quark-jet framework is used to model the sequential hadronization of a polarized quark into hadrons, where the polarization…

High Energy Physics - Phenomenology · Physics 2017-10-20 Hrayr H. Matevosyan , Aram Kotzinian , Anthony W. Thomas

Dihadron Fragmentation Functions (DFF) provide a vast amount of information on the intricate details of the parton hadronization process. Moreover, they provide a unique access to the "clean" extraction of nucleon transversity parton…

High Energy Physics - Phenomenology · Physics 2013-12-04 Hrayr H. Matevosyan , Anthony W. Thomas , Wolfgang Bentz

The NJL-jet model provides a framework for calculating fragmentation functions without the introduction of ad hoc parameters. We develop the NJL-jet model to investigate dihadron fragmentation functions (DFFs) of the form $D^{h_1…

High Energy Physics - Phenomenology · Physics 2012-07-25 Andrew Casey , Hrayr H. Matevosyan , Anthony W. Thomas

We study the unpolarized fragmentation functions and parton distribution functions of the pion employing the nonlocal chiral quark model. This model manifests the nonlocal interactions between the quarks and pseudoscalar mesons in the…

High Energy Physics - Phenomenology · Physics 2015-06-03 Seung-il Nam , Chung-Wen Kao

We present results for dihadron fragmentation functions from the NJL-jet model evolved from the model scale to a typical experimental scale of $4 \mathrm{GeV}^2$. The numerical method used in this evolution is discussed in detail. The…

High Energy Physics - Phenomenology · Physics 2013-05-30 Andrew Casey , Ian C. Cloët , Hrayr H. Matevosyan , Anthony W. Thomas

Using the model of Nambu and Jona-Lasinio to provide a microscopic description of both the structure of the nucleon and of the quark to hadron elementary fragmentation functions, we investigate the transverse momentum dependence of the…

High Energy Physics - Phenomenology · Physics 2012-01-20 Hrayr H. Matevosyan , Wolfgang Bentz , Ian C. Cloët , Anthony W. Thomas

Within the most recent extension of the quark-jet hadronization framework, we explore the transverse-polarization-dependent dihadron fragmentation functions (DiFFs) $H_1^\sphericalangle$ and $H_1^\perp$ of a quark into $\pi^+\pi^-$ pairs.…

High Energy Physics - Phenomenology · Physics 2018-01-29 Hrayr H. Matevosyan , Aram Kotzinian , Anthony W. Thomas

We investigate the unpolarized pion and kaon fragmentation functions, employing the nonlocal chiral-quark model, which manifests the nonlocal interactions between the quarks and pseudoscalar mesons, considering the explicit…

High Energy Physics - Phenomenology · Physics 2015-06-04 Seung-il Nam , Chung-Wen Kao

The NJL-jet model provides a sound framework for calculating the fragmentation func- tions in an effective chiral quark theory, where the momentum and isospin sum rules are satisfied without the introduction of ad hoc parameters [1].…

Nuclear Theory · Physics 2011-04-06 Hrayr H. Matevosyan , Anthony W. Thomas , Wolfgang Bentz

We study the azimuthal modulations of dihadron fragmentation functions (DiFFs) of a transversely polarised quark using an NJL-jet based model that incorporates the Collins effect for single hadron emission. The DiFFs are extracted as Monte…

High Energy Physics - Phenomenology · Physics 2014-03-11 Hrayr H. Matevosyan , Aram Kotzinian , Anthony W. Thomas

The Nambu--Jona-Lasinio (NJL) - Jet model provides a sound framework for calculating the fragmentation functions in an effective chiral quark theory, where the momentum and isospin sum rules are satisfied without the introduction of ad hoc…

High Energy Physics - Phenomenology · Physics 2011-04-06 Hrayr H. Matevosyan , Anthony W. Thomas , Wolfgang Bentz

The recently developed Nambu-Jona-Lasinio (NJL) - Jet model is used as an effective chiral quark theory to calculate the quark fragmentation functions to pions, kaons, nucleons, and antinucleons. The effects of the vector mesons rho, K* and…

High Energy Physics - Phenomenology · Physics 2011-06-13 Hrayr H. Matevosyan , Anthony W. Thomas , Wolfgang Bentz

We investigate the parton-distribution functions (PDFs) for the positively charged pion and kaon at a low-renormalization scale ~ 1 GeV. To this end, we employ the gauge-invariant effective chiral action from the nonlocal chiral-quark…

High Energy Physics - Phenomenology · Physics 2013-05-30 Seung-il Nam

Dihadron Fragmentation Functions (DFF) provide a vast amount of information on the intricate details of the parton hadronization process. Moreover, they provide a unique access to the "clean" extraction of nucleon transversity parton…

High Energy Physics - Phenomenology · Physics 2014-05-22 Hrayr H. Matevosyan , Anthony W. Thomas , Wolfgang Bentz

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

We present the parton distribution functions (PDFs) for un- polarised, longitudinally polarized and transversely polarized quarks in a proton using the light-front quark diquark model. We also present the scale evolution of PDFs and…

High Energy Physics - Phenomenology · Physics 2018-01-08 Tanmay Maji , Dipankar Chakrabarti

Using repeated Laplace transform, We find an analytical solution for DGLAP evolution equations for extracting the pion, kaon and proton Fragmentation Functions (FFs) at NLO approximation. We also study the symmetry breaking of the sea…

High Energy Physics - Phenomenology · Physics 2025-12-12 M. Zareei , F. Taghavi-Shahri , S. Atashbar Tehrani , M. Sarbishei
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