Double Spin Asymmetries for Large-pT Hadron Production in Semi-Inclusive DIS

نویسنده

  • Yuji Koike
چکیده

We study the twist-2 double-spin asymmetries for the 2-jets and large-pT hadron (π, Λ etc) production in semi-inclusive deep inelastic scattering to O(αs) in perturbative QCD. After deriving the complete set of the polarized cross section which is differential with respect to the transverse momentum, we discuss characteristic features of the azymuthal spin asymmetries, using existing parton densities and fragmentation functions at COMPASS and EIC energies.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Single Transverse Spin Asymmetries for Semi-inclusive Pion Production in DIS

We present a phenomenological approach to the description of single transverse spin asymmetries (STSA) in inclusive hadron production. It generalizes the pQCD formalism for high energies and large pT inclusive hadron production processes, AB → C X, by incorporating quark intrinsic motion in the spin dependent quark distribution and fragmentation functions. We concentrate here on spin and k⊥ eff...

متن کامل

Zhao, Y.x. Et Al. (2015) Double Spin Asymmetries of Inclusive Hadron Electroproduction from a Transversely Polarized 3he Target. Physical Review C, Double Spin Asymmetries of Inclusive Hadron Electroproductions from a Transversely Polarized 3 He Target

There may be differences between this version and the published version. You are advised to consult the publisher's version if you wish to cite from it. 2 We report the measurement of beam-target double-spin asymmetries (ALT) in the inclusive production of identified hadrons, e + 3 He ↑ → h + X, using a longitudinally polarized 5.9 GeV electron beam and a transversely polarized 3 He target. Had...

متن کامل

Semi-inclusive Hadron-hadron Transverse Spin Asymmetries and Their Implication for Polarized Dis

We discuss 1 a possible explanation of the 25 year old mystery of the large transverse spin asymmetries found in many semi-inclusive hadron-hadron reactions. We obtain the first reliable information about the transverse polarized quark densities ∆T q(x) and we find surprising implications for the usual, longitudinal, polarized DIS. The plan of the presentation is as follows: 1) A brief reminder...

متن کامل

Flavor asymmetry of polarized antiquark distributions and semi-inclusive DIS

The 1/Nc–expansion of QCD suggests large flavor asymmetries of the polarized antiquark distributions in the nucleon. This is confirmed by model calculations in the large–Nc limit (chiral quark–soliton model), which give sizable results for ∆ū(x)−∆d̄(x) and ∆ū(x)+∆d̄(x)−2∆s̄(x). We compute the contributions of these flavor asymmetries to the spin asymmetries in hadron production in semi-inclusive d...

متن کامل

Hermes and the Spin of the Proton

HERMES is a second generation experiment to study the spin structure of the nucleon, in which measurements of the spin dependent properties of semi-inclusive deep-inelastic lepton scattering are emphasized. Data have been accumulated for semi-inclusive pion, kaon, and proton double-spin asymmetries, as well as for high-pT hadron pairs, and singlespin azimuthal asymmetries for pion electroproduc...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2003