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Search: WFRF:(Lebiedowicz P.) > (2011)

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1.
  • Lebiedowicz, P., et al. (author)
  • Exclusive production of chi(c)(0(+)) meson and its measurement in the pi(+)pi(-) channel
  • 2011
  • In: Nuclear physics B, Proceedings supplements. - : Elsevier BV. - 0920-5632 .- 1873-3832. ; 219-220, s. 284-287
  • Journal article (peer-reviewed)abstract
    • We report on the results of a theoretical study of the central exclusive production of scalar chi(c)(0(+)) meson via chi(c0) -> pi(+)pi(-) decay in high-energy hadron collisions at the RHIC, Tevatron and LHC. The corresponding amplitude for exclusive double-diffractive chi(c0) meson production was obtained within the k(t)-factorization approach including virtualities of active gluons and the cross section is calculated with unintegrated gluon distribution functions (UGDFs) known from the literature. The four-body pp -> pp pi(+)pi(-) reaction constitutes an irreducible background to the exclusive chi(c0) meson production. We include the absorption effects due to proton-proton interaction and pion-pion rescattering. Several differential distributions for pp((p) over bar) -> pp((p) over bar)chi(c0) process, including the absorptive corrections, were calculated. The influence of kinematical cuts on the signal-to-background ratio is investigated.
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2.
  • Lebiedowicz, P., et al. (author)
  • Measurement of exclusive production of scalar chi(c0) meson in proton-(anti)proton collisions via chi(c0) -> pi(+)pi(-) decay
  • 2011
  • In: Physics Letters B. - : Elsevier BV. - 0370-2693 .- 1873-2445. ; 701:4, s. 434-444
  • Journal article (peer-reviewed)abstract
    • We consider a measurement of exclusive production of scalar chi(c)(0(++)) meson in the proton-proton collisions at LHC and RHIC and in the proton-antiproton collisions at the Tevatron via chi(c0) -> pi(+)pi(-) decay. The corresponding amplitude for exclusive double-diffractive chi(c0) meson production was obtained within the k(t)-factorization approach including virtualities of active gluons and the corresponding cross section is calculated with unintegrated gluon distribution functions (UGDFs) known from the literature. The four-body pp -> pp pi(+)pi(-) reaction constitutes an irreducible background to the exclusive chi(c0) meson production. We include absorption effects due to proton-proton interaction and pion-pion rescattering. We calculate several differential distributions for pp((p) over bar) -> pp((p) over bar)chi(c0) process including the absorptive corrections. The influence of kinematical cuts on the signal-to-background ratio is investigated. Corresponding experimental consequences are discussed.
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  • Result 1-2 of 2
Type of publication
journal article (2)
Type of content
peer-reviewed (2)
Author/Editor
Szczurek, A. (2)
Lebiedowicz, P. (2)
Pasechnik, Roman (1)
Pasechnik, R. (1)
University
Uppsala University (2)
Lund University (2)
Language
English (2)
Research subject (UKÄ/SCB)
Natural sciences (2)
Year
2011 (2)Undo refine

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