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Related papers: Nucleon Structure Functions from a Chiral Soliton

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We study nucleon structure functions within the bosonized Nambu--Jona--Lasinio model where the nucleon emerges as a chiral soliton. We discuss the model predictions on the Gottfried sum rule for electron--nucleon scattering. A comparison…

High Energy Physics - Phenomenology · Physics 2014-11-17 L. Gamberg , H. Reinhardt , H. Weigel

We study nucleon structure functions within the bosonized Nambu-Jona-Lasinio (NJL) model where the nucleon emerges as a chiral soliton. We discuss the model predictions on the Gottfried sum rule for electron-nucleon scattering. A comparison…

High Energy Physics - Phenomenology · Physics 2009-10-30 H. Weigel , L. Gamberg , H. Reinhardt

We study polarized-spin structure functions of the nucleon within the bosonized Nambu-Jona-Lasinio model where the nucleon emerges as a chiral soliton. We present the electromagnetic polarized structure functions, $g_{1}(x)$ and $g_{2}(x)$…

High Energy Physics - Phenomenology · Physics 2009-10-28 H. Weigel , L. Gamberg , H. Reinhardt

We study nucleon structure functions within the bosonized version of the Nambu-Jona-Lasinio (NJL) model in which the nucleon emerges as the soliton in the chiral field. Upon boosting to the infinite momentum frame and performing the…

High Energy Physics - Phenomenology · Physics 2009-10-31 H. Weigel , L. Gamberg , H. Reinhardt , O. Schroeder

The computation of nucleon structure functions within the Nambu-Jona-Lasinio chiral soliton model is outlined. After some technical remarks on the issue of regularization numerical results for the both unpolarized and polarized structure…

High Energy Physics - Phenomenology · Physics 2009-10-31 Herbert Weigel

We outline and review the computations of polarized and unpolarized nucleon structure functions within the bosonized Nambu-Jona-Lasinio chiral soliton model. We focus on a consistent regularization prescription for the Dirac sea…

High Energy Physics - Phenomenology · Physics 2021-01-12 Herbert Weigel , Ishmael Takyi

We study nucleon structure functions in the soliton picture of the bosonized Nambu-Jona-Lasinio model. We focus on their vacuum contributions and examine whether they are outweighed by their valence quark counterparts.

High Energy Physics - Phenomenology · Physics 2020-01-08 I. Takyi , H. Weigel

We present numerical simulations for unpolarized and polarized structure functions in a chiral soliton model. The soliton is constructed self-consistently from quark fields from which the structure functions are extracted. Central to the…

High Energy Physics - Phenomenology · Physics 2019-08-23 I. Takyi , H. Weigel

We study the frame dependence of nucleon structure functions obtained within a chiral soliton model for the nucleon. Employing light cone coordinates and introducing collective coordinates together with their conjugate momenta,…

High Energy Physics - Phenomenology · Physics 2009-10-30 L. Gamberg , H. Reinhardt , H. Weigel

This research summarizes work done by myself (Nucl.Phys.{\bf A641} (1998)461), or in collaboration with R. M. Davidson (Phys.Lett.{\bf B348}(1995)163) and H. Weigel and L. Gamberg (Nucl.Phys.{\bf B560}(1999)xx). I will discuss several…

High Energy Physics - Phenomenology · Physics 2007-05-23 E. Ruiz Arriola

We study the relevance of strange degrees of freedom for nucleon structure functions. For this purpose we employ the three flavor generalization of the collective quantization approach to the chiral soliton of the bosonized…

High Energy Physics - Phenomenology · Physics 2009-10-31 O. Schroeder , H. Reinhardt , H. Weigel

In this talk I review studies of hadron structure functions in bosonized chiral quark models. Such models require regularization and I show that the two--fold Pauli--Villars regularization scheme not only fully regularizes the effective…

High Energy Physics - Phenomenology · Physics 2017-08-23 H. Weigel

Nucleon structure functions, as measured in deep-inelastic lepton scattering, are studied within a covariant scalar diquark spectator model. Regarding the nucleon as an approximate two-body bound state of a quark and diquark, the…

High Energy Physics - Phenomenology · Physics 2015-06-25 K. Kusaka , G. Piller , A. W. Thomas , A. G. Williams

We calculate the chiral odd quark distributions and the corresponding structure functions $h_T(x,Q^2)$ and $h_L(x,Q^2)$ within the Nambu-Jona-Lasinio chiral soliton model for the nucleon. The $Q^2$ evolution of the twist-2 contributions is…

High Energy Physics - Phenomenology · Physics 2016-09-06 L. Gamberg , H. Reinhardt , H. Weigel

We start from an MIT-bag model calculation which provides information about the constituent quark distributions in the nucleon. The constituent quarks, however, are themselves considered as complex objects whose partonic substructure is…

High Energy Physics - Phenomenology · Physics 2009-09-25 J. Keppler , H. M. Hofmann

In these lectures the three flavor soliton approach for baryons is reviewed. Effects of flavor symmetry breaking in the baryon wave--functions on axial current matrix elements are discussed. A bosonized chiral quark model is considered to…

High Energy Physics - Phenomenology · Physics 2009-11-07 Herbert Weigel

We have used the notion of the constituent quark model of nucleon, where a constituent quark carries its own internal structure, and applied it to determine nuclear structure functions ratios. It is found that the description of…

Nuclear Theory · Physics 2007-05-23 Firooz Arash , Shahin Atashbar-Tehrani

The nucleon structure functions are studied with a special emphasis on diquark correlations inside the nucleon. Assuming a phenomenological diquark-quark model of the nucleon at the low energy hadronic scale, we calculate the leading twist…

High Energy Physics - Phenomenology · Physics 2015-06-25 K. Suzuki , T. Shigetani , H. Toki

We present a consistent regularization procedure for calculating hadron structure functions in a bosonized chiral quark model. We find that the Pauli-Villars regularization scheme is most suitable. We also summarize the phenomenology of…

High Energy Physics - Phenomenology · Physics 2017-08-23 Leonard Gamberg , Herbert Weigel

In this talk I review studies of hadron properties in bosonized chiral quark models for the quark flavor dynamics. Mesons are constructed from Bethe--Salpeter equations and baryons emerge as chiral solitons. Such models require…

High Energy Physics - Phenomenology · Physics 2008-11-26 H. Weigel
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