Quark Asymmetries and Intrinsic Charm in Nucleons
| dc.creator | Alwall, Johan | |
| dc.date | 2005-08-11 | |
| dc.date.accessioned | 2026-07-07T03:55:23Z | |
| dc.date.available | 2026-07-07T03:55:23Z | |
| dc.description | We have developed a physical model for the non-perturbative x-shape of parton density functions in the proton, based on Gaussian fluctuations in momenta, and quantum fluctuations of the proton into meson-baryon pairs. The model describes the proton structure function and gives a natural explanation of observed quark asymmetries, such as the difference between the anti-up and anti-down sea quark distributions and between the up and down valence distributions. We find an asymmetry in the momentum distribution of strange and anti-strange quarks in the nucleon, large enough to reduce the NuTeV anomaly to a level which does not give a significant indication of physics beyond the standard model. We also consider charmed fluctuations, and show that they can explain the excess at large x in the EMC F2c data. | |
| dc.description | 7 pages, 7 figures. Extended version of talk given at DIS 2005, Madison, USA, April 27-May 1, 2005 | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0508126 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0508126 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/44536 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Quark Asymmetries and Intrinsic Charm in Nucleons | |
| dc.type | text |