Precise determination of the spin structure function<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>g</mml:mi><mml:mn>1</mml:mn></mml:msub></mml:math>of the proton, deuteron, and neutron

Airapetian, A.; Акопов, Н.; Akopov, Z.; Andrus, A.; Aschenauer, E. C.; Augustyniak, W.; Avakian, R.; Avetissian, A.; Avetissian, E.; Belostotski, S.; Bianchi, N.; Blok, H.P.; Böttcher, H.; Borissov, A.; Borysenko, A.; Brüll, A.; Bryzgalov, V.; Capiluppi, M.; Capitani, G. P.; Ciullo, G.; Contalbrigo, M.; Dalpiaz, P.; Deconinck, W.; Лео, Р. Де; Demey, M.; Nardo, L. De; Sanctis, E. De; Devitsin, E.; Diefenthaler, M.; Nezza, P. Di; Dreschler, J.; Düren, M.; Ehrenfried, M.; Elalaoui-Moulay, A.; Elbakian, G.; Ellinghaus, F.; Elschenbroich, U.; Fabbri, R.; Fantoni, A.; Felawka, L.; Frullani, S.; Funel, A.; Gabbert, D.; Gärber, Y.; Gapienko, G.; Гапиенко, В. А.; Garibaldi, F.; Garrow, K.; Gavrilov, G.; Gharibyan, V.; Giordano, F.; Grebeniouk, O.; Gregor, I. M.; Güler, H.; Gute, A.; Hadjidakis, C.; Hartig, M.; Hasch, D.; Hasegawa, T.; Hesselink, W.H.A.; Hillenbrand, A.; Hoek, M.; Holler, Y.; Hommez, B.; Hristova, I.; Iarygin, G.; Ivanilov, A.; Izotov, A.; Jackson, H. E.; Jgoun, A.; Kaiser, R.; Keri, T.; Kinney, E.; Kisselev, A.; Kobayashi, T.; Kopytin, M.; Коротков, В. А.; Kozlov, V.; Krauß, Bernhard; Kravchenko, P.; Krivokhijine, V. G.; Lagamba, L.; Lapikás, L.; Lenisa, P.; Liebing, P.; Linden-Levy, L. A.; Lorenzon, W.; Lu, J.; Lü, Shaozhe; Q., B.; Maiheu, B.; Makins, N.; Mao, Y.; Mariański, B.; Marukyan, H.; Masoli, F.; Mexner, V.; Meyners, N.; Michler, T.; Mikloukho, O.; Miller, C. A.; Miyachi, Y.; Muccifora, V.; Murray, M.; Нагайцев, А.; Nappi, E.; Naryshkin, Y.; Negodaev, M.; Nowak, W.-D.; Ohsuga, H.; Osborne, A.M.; Pérez-Benito, R.; Pickert, N.; Raithel, Martin; Reggiani, D.; Reimer, P. E.; Reischl, A.; Reolon, A. R.; Riedl, C.; Rith, Klaus; Rosner, G.; Rostomyan, A.; Rubáček, L.; Rubin, J.; Ryckbosch, D.; Salomatin, Y.; Sanjiev, I.; Savin, I.; Schäfer, Andreas; Schnell, G.; Schüler, K. P.; Seele, J.; Seitz, B.; Shearer, C.; Shibata, T. A.; Shutov, V.; Sinram, K.; Stancari, M.; Statera, M.; Steffens, E.; Steijger, J. J. M.; Stenzel, H.; Stewart, J.; Stinzing, F.; Stößlein, U.; Streit, J.; Tait, P.; Tanaka, Hiroki; Taroian, S.; Tchuiko, B.; Terkulov, A.; Trzciński, A.; Tytgat, M.; Vandenbroucke, A.; Nat, P. B. van der; Steenhoven, G. van der; Haarlem, Y. Van; Veretennikov, D.; Vikhrov, V.; Vogel, Christian; Wang, S.; Weiskopf, C.; Ye, Y.; Ye, Z.; Yen, S.; Zihlmann, B.; Żuprański, P.

doi:10.1103/physrevd.75.012007

Cited by 380 publications

(297 citation statements)

References 120 publications

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“…As the heavy baryon formalism is valid only for the small pion mass, we restrict the data points at pion masses less than 500MeV. Then it turns out that the chiral log term gives a strong m π dependence for small m π region and the extrapolated value is eventually comparable with the latest experimental value of deep-inelastic scattering reported by HERMES [7]. With this extrapolation, we obtain the quark spin contribution in the nucleon asÃ right panel of Fig.2.…”

Section: Lattice Simulation Results and Chiral Extrapolationsupporting

confidence: 49%

Moments of generalized parton distributions and quark angular momentum of the nucleon

Ohtani¹,

Broemmel²,

Goeckeler³

et al. 2008

Proceedings of the XXV International Symposium on Lattice Field Theory — PoS(LATTICE 2007)

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The internal structure of hadrons is important for a variety of topics, including the hadron form factors, proton spin and spin asymmetry in polarized proton scattering. For a systematic study generalized parton distributions (GPDs) encode important information on hadron structure in the entire impact parameter space. We report on a computation of nucleon GPDs based on simulations with two dynamical non-perturbatively improved Wilson quarks with pion masses down to 350MeV. We present results for the total angular momentum of quarks with chiral extrapolation based on covariant baryon chiral perturbation theory.

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Section: Lattice Simulation Results and Chiral Extrapolationsupporting

confidence: 49%

Moments of generalized parton distributions and quark angular momentum of the nucleon

Ohtani¹,

Broemmel²,

Goeckeler³

et al. 2008

Proceedings of the XXV International Symposium on Lattice Field Theory — PoS(LATTICE 2007)

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show abstract

“…In practice, however, determining the first moment requires an extrapolation of the experimental data to small values of x, where uncertainties are less under control. There is some tension between the two most recent analyses from HERMES [6,7], which rely on different techniques; the former favors a negative value for ∆s while the latter finds a result consistent with zero, within somewhat larger uncertainties.…”

Section: Introductionmentioning

confidence: 95%

Strange quark content of the nucleon

Babich¹,

Brower²,

Clark³

et al. 2009

Proceedings of the XXVI International Symposium on Lattice Field Theory — PoS(LATTICE 2008)

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We discuss the calculation of disconnected diagrams needed for determining the strange quark content of the nucleon on the lattice. We present results for the strange scalar form factor and the related parameter f T s , which enters into the cross-section for the scattering of dark matter off nuclei in supersymmetric extensions of the standard model. In addition, we present results for the strange contribution to the nucleon's axial and electromagnetic form factors. The calculations were performed with two dynamical flavors of Wilson fermions on a 24 3 × 64 anisotropic lattice with a s ≈ 3a t ≈ 0.11 fm and M π ≈ 400 MeV.

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“…Initially it provided critical information on the relative distribution of momentum between valence and sea quarks and the gluons. As the experimental capabilities have grown so have our ambitions and over the past decade semi-inclusive deep-inelastic scattering (SIDIS) has helped (along with Drell-Yan) to expand our knowledge of quark flavor structure [2][3][4][5][6][7][8][9][10]. With several new experimental facilities with 100% duty factor under construction, SIDIS will become even more important.…”

Section: Introductionmentioning

confidence: 99%

Calculating dihadron fragmentation functions in the Nambu–Jona-Lasinio–jet model

2012

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The Nambu-Jona-Lasinio-jet model provides a framework for calculating fragmentation functions without the introduction of ad hoc parameters. We develop the Nambu-Jona-Lasinio-jet model to investigate dihadron fragmentation functions (DFFs) of the form D h 1 ,h 2 q (z1, z2). Here we studied DFFs for q → {π + π − }, {π + K − } and {K + K − } with q = u, d, s. The driving terms, which represent the probability of one of the hadrons being emitted in the first emission step of the quark-jet hadronization picture, dominate the solutions of the DFFs where either z1 or z2 is large, and z1 (z2) is the light-cone momentum fraction of the emitted hadron, h1 (h2). The higher order terms, which represent the probability of neither of the hadrons being emitted in the first emission step of the quark-jet, become more significant as z1 (z2) is lowered. Finally, we present a sample result for QCD evolution of DFFs, that significantly modify the model solutions when evolved to typical experimental scale of 4 GeV 2 .

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Precise determination of the spin structure functiong1of the proton, deuteron, and neutron

Cited by 380 publications

References 120 publications

Moments of generalized parton distributions and quark angular momentum of the nucleon

Moments of generalized parton distributions and quark angular momentum of the nucleon

Strange quark content of the nucleon

Calculating dihadron fragmentation functions in the Nambu–Jona-Lasinio–jet model

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