Calculation of the nucleon<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>g</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>structure function using the meson cloud model in the light-cone frame

Zamani, F.; Saranchak, D.

doi:10.1103/physrevc.63.065202

Cited by 11 publications

(26 citation statements)

References 68 publications

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“…With the exception of set-1 of Ref. [6], which is in agreement with the HERMES (NNNLO) BSR calculation [29], our model calculations are more in line with the HERMES (LO) BSR calculation [29].…”

Section: Resultssupporting

confidence: 82%

“…However, for the polarized case the results were rather mixed. For some case the symmetrical model was more agreeable with observation [1,5,6]. Our objective here is to have a core quark distribution that can reproduce observation equally well, whether it is for the polarized structure function or the unpolarized structure function.…”

mentioning

confidence: 56%

“…The last six rows are the our results. Initially we assumed the total gluon polarization for set-1 and set-2 to be 2.5 [5,6]. For our latest work [1] for set-3 we also considered gluon polarization of 2.0 to acknowledge the possibility of small gluon polarization due to recent experimental results [21][22][23][24].…”

Section: Resultsmentioning

confidence: 99%

“…Details can be found in Refs. [1, 5,6]. Having the splitting function one can calculate the initial dressed polarized quark distributions.…”

Section: Meson Cloud Model In Light-cone Framementioning

confidence: 99%

“…

…”

mentioning

confidence: 99%

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Contribution of Vector Mesons and Spin-1 Diquark to the Nucleon Structure Functions

Zamani¹

2011

AIP Conference Proceedings

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In our previous works [1][2][3][4][5][6][7] we used both symmetrical (no diquark) core quark distribution and asymmetrical (diquark-quark) core quark distribution along with pseudoscalar mesons and vector mesons to calculate polarized [1,5,6] and unpolarized [2][3][4]7] nucleon structure functions. For the asymmetrical distribution we considered the superposition of spin-0, isospin-0 and spin-0, isospin-1 along with spin-0, isospin-0 and spin-1 isospin-1 states. It turned out that for unpolarized structure functions only the quark-diquark model was able to reproduce experimental results reasonably well [2][3][4]7]. Also, one needs the contribution of vector mesons to reproduce the observed Gottfried sum-rule violation [13]. However, for the polarized case the results were rather mixed. For some case the symmetrical model was more agreeable with observation [1,5,6]. Our objective here is to have a core quark distribution that can reproduce observation equally well, whether it is for the polarized structure function or the unpolarized structure function. To achieve this goal we have added the other two possible states to the diquark state. Namely, spin-1, isospin-0 and spin-1, isospin-1 and the contribution of both pseudoscalar mesons and vector mesons. The calculation is performed in the light-cone frame. The dressed nucleon is assumed to be a superposition of the bare nucleon plus virtual light-cone Fock states of baryon-meson pairs. For bare nucleon we consider both the case of diquark-quark model which is now the superposition of all four diquark states and the case which there is no quark clustering inside the nucleon. The initial distributions are evolved using DGLAP equations. The final results are compared with experimental results and other theoretical predictions.

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Section: Resultssupporting

confidence: 82%

mentioning

confidence: 56%

Section: Resultsmentioning

confidence: 99%

“…Details can be found in Refs. [1, 5,6]. Having the splitting function one can calculate the initial dressed polarized quark distributions.…”

Section: Meson Cloud Model In Light-cone Framementioning

confidence: 99%

“…

…”

mentioning

confidence: 99%

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Contribution of Vector Mesons and Spin-1 Diquark to the Nucleon Structure Functions

Zamani¹

2011

AIP Conference Proceedings

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Contribution of Spin-1 Diquark to the Nucleon Structure Functions

Zamani

2005

Nuclear Physics A

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Contribution of the pseudoscalar and vector mesons to the nucleon’sg1structure function

Zamani

2003

Phys. Rev. C

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This is the third part of a series of work that we have done in the context of the meson cloud model. In the first two parts [F. Zamani, Phys. Rev. C 58, 3641 (1998); F. Zamani and D. Saranchak, Phys. Rev. C 63, 065202 (2001)] we used pseudoscalar mesons to calculate unpolarized and polarized quark distribution functions along with the nucleon's F 2 and g 1 structure functions. Now we have added the vector mesons to the meson cloud to calculate the polarized quark distribution functions and g 1 structure function. The calculation is performed in the light-cone frame. The dressed nucleon is assumed to be a superposition of the bare nucleon plus virtual light-cone Fock states of baryon-meson pairs. For bare nucleon we consider both the case of diquark-quark clustering and the case where there is no quark clustering inside the nucleon. The initial distributions are evolved. The final results are compared with experimental results and other theoretical predictions.

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Calculation of the nucleong1structure function using the meson cloud model in the light-cone frame

Cited by 11 publications

References 68 publications

Contribution of Vector Mesons and Spin-1 Diquark to the Nucleon Structure Functions

Contribution of Vector Mesons and Spin-1 Diquark to the Nucleon Structure Functions

Contribution of Spin-1 Diquark to the Nucleon Structure Functions

Contribution of the pseudoscalar and vector mesons to the nucleon’sg1structure function

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