2015
DOI: 10.1103/physrevd.91.094002
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Determination of strange sea quark distributions from fixed-target and collider data

Abstract: We present an improved determination of the strange sea distribution in the nucleon with constraints coming from the recent charm production data in neutrino-nucleon deep-inelastic scattering by the NOMAD and CHORUS experiments and from charged current inclusive deep-inelastic scattering at HERA. We demonstrate that the results are consistent with the data from the ATLAS and the CMS experiments on the associated production of W AE -bosons with c-quarks. We also discuss issues related to the recent strange sea … Show more

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Cited by 61 publications
(63 citation statements)
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“…More immediately, perhaps, further constraints may be possible through measurement of associated charm and weak boson production in pp scattering at the LHC [85]. The theoretical framework utilized here can also be extended to systematically explore the effects of kaon loops within the chiral theory on strange quark polarization, including contributions from both octet and decuplet hyperons, which will be discussed in a separate publication [65].…”
Section: Discussionmentioning
confidence: 99%
“…More immediately, perhaps, further constraints may be possible through measurement of associated charm and weak boson production in pp scattering at the LHC [85]. The theoretical framework utilized here can also be extended to systematically explore the effects of kaon loops within the chiral theory on strange quark polarization, including contributions from both octet and decuplet hyperons, which will be discussed in a separate publication [65].…”
Section: Discussionmentioning
confidence: 99%
“…This covers a wide kinematic range, because a hard scale provided by the mass of heavy quarks allows applicability of pQCD even at low transverse momentum p T ∼ Λ QCD ; -W ± + c final states probe the strange-quark content of the proton, since the LO production mechanism is gs → W ± c [83].…”
Section: Heavy-quark Production In Pp Collisionsmentioning
confidence: 99%
“…This is in fact what seems to be happening when comparing the strange quark extracted from LHC data on W +c productions, where one observes a ratio k = 2s/(ū+d) ≈ 1 compared to k ≈ 0.4 obtained in fits utilizing only di-muon data; see [40] for a more detailed discussion and for an alternative interpretation of this mismatch. Indications of issues with strange quarks also come from semi-inclusive DIS kaon cross sections from the HERMES collaboration [41], that…”
Section: Pos(dis2015)001mentioning
confidence: 91%