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2005 | 3 | 3 | 433-455
Tytuł artykułu

Contribution of superstring Z′ boson on the polarization effects in proton proton collisions

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
In this work we investigate the single- and the double-spin asymmetries at the collisions of polarized protons pp → (γ *, Z 0, Z′) + X within the scope of QCD, the electroweak interaction and superstring E 6 theory. The helicity amplitude method is used. Analytical expressions for the single- and the double-spin asymmetries are obtained and their dependence on the transverse momentum of the lepton pair is investigated at the three different values of invariant masses of the lepton pair. The pure contribution coming from the superstring Z′ boson on the single- and double- spin asymmetries has been extracted. The results obtained allow investigation of the spin structure of the proton.
Wydawca

Czasopismo
Rocznik
Tom
3
Numer
3
Strony
433-455
Opis fizyczny
Daty
wydano
2005-09-01
online
2005-09-01
Twórcy
  • Faculty of Physics, Baku State University, Z. Khalilov st.23, AZ-1148, Baku, Azerbaijan
autor
  • Faculty of Physics, Baku State University, Z. Khalilov st.23, AZ-1148, Baku, Azerbaijan, ahmadovazar@yahoo.com
Bibliografia
  • [1] EMC Collab.: J. Ashman et al.: “A measurement of the spin asymmetry and determination of the structure function g 1 in deep inelastic muon-proton scattering”, Phys. Lett. B, Vol. 206, (1988), pp. 364–370. http://dx.doi.org/10.1016/0370-2693(88)91523-7[Crossref]
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  • [12] H.-Y. Cheng, H.H. Liu and C.-Y. Wu: “Polarized parton distribution functions reexamined”, Phys. Rev. D, Vol. 53, (1996), pp. 2380–2389. http://dx.doi.org/10.1103/PhysRevD.53.2380[Crossref]
  • [13] M. Gluck, E. Reya, M. Stratmann and W. Vogelsang: “Next-to-leading-order radiative parton model analysis of polarized deep inelastic lepton-nucleon scattering”, Phys. Rev. D, Vol. 53, (1996), pp. 4775–4786. http://dx.doi.org/10.1103/PhysRevD.53.4775[Crossref]
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_BF02475649
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