Zobrazeno 1 - 10
of 1 714
pro vyhledávání: '"quark: sea"'
We present a light-front model calculation of the pion parton distribution functions (PDFs) and the pion electromagnetic form factor. The pion state is modeled in terms of light-front wave functions (LFWFs) for the $q\bar q$, $q\bar q q\bar q$, $q\ba
Externí odkaz:
http://arxiv.org/abs/2303.01789
Autor:
Dove, J., Kerns, B., Leung, C., McClellan, R. E., Miyasaka, S., Morton, D. H., Nagai, K., Prasad, S., Sanftl, F., Scott, M. B. C., Tadepalli, A. S., Aidala, C. A., Arrington, J., Ayuso, C., Barker, C. T., Brown, C. N., Chang, T. H., Chang, W. C., Chen, A., Christian, D. C., Dannowitz, B. P., Daugherity, M., Diefenthaler, M., Fassi, L. El, Geesaman, D. F., Gilman, R., Goto, Y., Guo, L., Guo, R., Hague, T. J., Holt, R. J., Isenhower, D., Kinney, E. R., Kitts, N. D., Klein, A., Kleinjan, D. W., Kudo, Y., Lin, P. -J., Liu, K., Liu, M. X., Lorenzon, W., Makins, N. C. R., de Medeiros, M. Mesquita, McGaughey, P. L., Miyachi, Y., Mooney, I., Nakahara, K., Nakano, K., Nara, S., Peng, J. C., Puckett, A. J., Ramson, B. J., Reimer, P. E., Rubin, J. G., Sawada, S., Sawada, T., Shibata, T. -A., Shiu, S. H., Su, D., Teo, M., Tice, B. G, Towell, R. S., Uemura, S., Watson, T. S., Wang, S. G., Wickes, A. B., Wu, J., Xi, Z., Ye, Z.
Publikováno v:
Phys. Rev. C 108, 035202 (2023)
Evidence for a flavor asymmetry between the $\bar u$ and $\bar d$ quark distributions in the proton has been found in deep-inelastic scattering and Drell-Yan experiments. The pronounced dependence of this flavor asymmetry on $x$ (fraction of nucleon
Externí odkaz:
http://arxiv.org/abs/2212.12160
Autor:
Dove, Jason
Surprisingly large flavor asymmetry of the light-quark sea in the proton was reported in deep-inelastic scattering and Drell-Yan experiments. The Bjorken-$x$ dependence of the $\bar{d}/\bar{u}$ ratio extracted from the Fermilab E866 experiment also r
Externí odkaz:
http://arxiv.org/abs/1908.00040
Akademický článek
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Akademický článek
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Autor:
Sufian, Raza Sabbir, Liu, Tianbo, de Téramond, Guy F., Dosch, Hans Günter, Brodsky, Stanley J., Deur, Alexandre, Islam, Mohammad T., Ma, Bo-Qiang
Publikováno v:
Phys. Rev. D 98, 114004 (2018)
We demonstrate that a nonzero strangeness contribution to the spacelike electromagnetic form factor of the nucleon is evidence for a strange-antistrange asymmetry in the nucleon's light-front wave function, thus implying different nonperturbative con
Externí odkaz:
http://arxiv.org/abs/1809.04975
Autor:
Chang, Wen-Chen, Peng, Jen-Chieh
Publikováno v:
Phys. Rev. D 92, 054020 (2015)
The HERMES collaboration recently reported a reevaluation of the strange-quark parton distribution, $S(x)$, based on kaon production in semi-inclusive deep-inelastic scattering. Two distinct results on $S(x)$ at the $x> 0.1$ region, one with a sizabl
Externí odkaz:
http://arxiv.org/abs/1410.7027
Autor:
Zavada, Petr
The real, interacting elementary particle always consits of a 'bare' particle and a cloud of virtual particles mediating a self-interaction and/or the bond inside a composite object. In this letter we discuss the question of spin content of the virtu
Externí odkaz:
http://arxiv.org/abs/1503.07924
Autor:
Dahiya, Harleen, Sharma, Neetika
The effects of nonperturbatively generated ``quark sea'' have been investigated to determine the flavor structure of the octet baryons. The chiral constituent quark model ($\chi$CQM), which is known to provide a satisfactory explanation of the proton
Externí odkaz:
http://arxiv.org/abs/1008.4645
Autor:
Sharma, Neetika, Dahiya, Harleen
Publikováno v:
Phys.Rev.D81:114003,2010
The effects of "quark sea" in determining the flavor structure of the octet baryons have been investigated in the chiral constituent quark model (\chiCQM). The \chiCQM is able to qualitatively generate the requisite amount of quark sea and is also kn
Externí odkaz:
http://arxiv.org/abs/1005.5655