Jul 16 – 22, 2009
Kraków, Poland
Europe/Warsaw timezone

Determination of Strange Sea Distributions from $\bm{\nu N}$ Deep Inelastic Scattering

Not scheduled
Auditorium Maximum (Kraków, Poland)

Auditorium Maximum

Kraków, Poland

The Auditorium Maximum of the Jagiellonian University 33 Krupnicza Street 31-123 Kraków
Poster session

Speaker

Prof. Roberto Petti (University of South Carolina, USA)

Description

We present an analysis of the nucleon strange sea extracted from a global Parton Distribution Function fit including the neutrino and anti- neutrino dimuon data by the CCFR and NuTeV collaborations, the inclusive charged lepton-nucleon Deep Inelastic Scattering and Drell-Yan data. The (anti-)neutrino induced dimuon analysis is constrained by the semi- leptonic charmed-hadron branching ratio $B_\mu=(8.8\pm0.5)\%$, determined from the inclusive charmed hadron measurements performed by the FNAL-E531 and CHORUS neutrino emulsion experiments. Our analysis yields a strange sea suppression factor $\kappa(20~{\rm GeV}^2)= 0.62\pm0.04({\rm exp.})\pm0.03({\rm QCD})$, the most precise value available, an $x$-distribution of total strange sea that is slightly softer than the non-strange sea, and an asymmetry between strange and anti-strange quark distributions consistent with zero (integrated over $x$ it is equal to $S^-(20~{\rm GeV}^2)=0.0013\pm 0.0009({\rm exp.}) \pm 0.0002({\rm QCD})$}).

Primary authors

Prof. Roberto Petti (University of South Carolina, USA) Dr Sergey Alekhin (IHEP, Russia) Dr Sergey Kulagin (INR, Russia)

Presentation materials

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