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1.
Hard exclusive meson production in muon scattering at COMPASS / Sandacz, Andrzej (NCBJ, Warsaw) /COMPASS Collaboration
We report on measurements of hard exclusive muoproduction of ρ0, ω and π0 mesons on the proton at COMPASS using 160 GeV/c polarized μ+ and μ− beams scattering off a liquid hydrogen target. The extracted Spin Density Matrix Elements for vector mesons indicate a violation of s-channel helicity conservation for transitions of transversely polarized virtual photons to longitudinally polarized vector mesons, γT → VL, where V denotes ρ0 or ω meson. [...]
2022 - 7 p. - Published in : EPJ Web Conf. 270 (2022) 00006 Fulltext: PDF;
In : 10th International Workshop on QCD - Theory and Experiment (QCD@Work 2022), Lecce, Italy, 27 -30 June 2022, pp.00006
დეტალური ჩანაწერი - მსგავსი ჩანაწერები
2.
Transverse extension of partons in the proton probed by DVCS at COMPASS / Sandacz, Andrzej (NCBJ, Warsaw) /COMPASS
We present the first result on exclusive single-photon muoproduction on the proton in the range of intermediate values of the Bjorken variable xBj , which was recently published by COMPASS collaboration. The measurements were performed using 160GeV/c polarised μ + and μ − beams of the CERN SPS scattering off a liquid hydrogen target. [...]
2020 - 6 p. - Published in : J. Phys.: Conf. Ser. 1435 (2020) 012046 Fulltext: PDF;
In : 18th Workshop on High Energy Spin Physics, Dubna, Russia, 2 - 6 Sep 2019, pp.012046
დეტალური ჩანაწერი - მსგავსი ჩანაწერები
3.
Recent results from COMPASS on exclusive muoproduction / Sandacz, Andrzej (Warsaw, Inst. Nucl. Studies) /COMPASS
The 160 GeV polarised muon beam available at CERN, with positive or negative charge, makes COMPASS a unique place for GPD studies. The first GPD related COMPASS results come from exclusive vector meson production on transversely polarised protons and deuterons. [...]
2016 - 6 p. - Published in : J. Phys.: Conf. Ser. 678 (2016) 012045 Fulltext: PDF;
In : 16th Workshop on High Energy Spin Physics, Dubna, Russia, 08 - 12 Sep 2015, pp.012045
დეტალური ჩანაწერი - მსგავსი ჩანაწერები
4.
The GPD program at COMPASS / Sandacz, Andrzej (NCBJ, Swierk)
The 160 GeV polarised muon beam available at CERN, with positive or negative charge, makes COMPASS a unique place for GPD studies. [...]
CIPANP2015-SANDACZ ; arXiv:1509.07732 ; CIPANP2015-SANDACZ. - 2015. - 9 p.
Preprint - Preprint
დეტალური ჩანაწერი - მსგავსი ჩანაწერები
5.
Exclusive processes in leptoproduction at COMPASS / Sandacz, Andrzej (Warsaw, Inst. Nucl. Studies)
Selected topics on exclusive $\rho^{0}$ production from the COMPASS experiment are discussed. [...]
2009. - 9 p.
Fulltext
დეტალური ჩანაწერი - მსგავსი ჩანაწერები
6.
Diffractive vector meson production at COMPASS and plans for GPDs measurements / Sandacz, Andrzej (Warsaw, Inst. Nucl. Studies) /on behalf of the COMPASS collaboration
Preliminary results on the spin dependence of exclusive $\rho^{0}$ muoproduction at COMPASS are discussed. The $Q^{2}$ dependence of several spin density matrix elements and of $R = \sigma_{L}\sigma_{T}$ is presented. [...]
2006 - 3 p. - Published in : AIP Conf. Proc.: 842 (2006) , pp. 345-347 External link: Published version from AIP
In : 17th International Conference on Particles and Nuclei, Santa Fe, NM, USA, 23 - 30 Oct 2005, pp.345-347
დეტალური ჩანაწერი - მსგავსი ჩანაწერები
7.
Color Transparency at COMPASS via Exclusive Coherent Vector Meson Production / Moinester, Murray (Tel Aviv U.) ; Grajek, Oleg A. (Warsaw, Inst. Nucl. Studies) ; Piasetzky, Eli (Tel Aviv U.) ; Sandacz, Andrzej (Warsaw, Inst. Nucl. Studies)
We examine the potential of the COMPASS experiment at CERN to study color transparency via exclusive coherent vector meson production in hard muon-nucleus scattering. It is demonstrated that COMPASS has high sensitivity to test this important prediction of perturbative QCD..
hep-ex/0212061.- 2002 - 13 p. - Published in : Czechoslov. J. Phys. 53 (2003) B189-B200
Access to fulltext document: 0212061.fig6 - PS.GZ; 0212061.fig4 - PS.GZ; 0212061.fig2 - PS.GZ; 0212061.fig3 - PS.GZ; 0212061 - PDF; Preprint: PDF; External link: hep-ex/0212061 PDF
In : Advanced Study Institute on Symmetries and Spin, Prague, Czech Republic, 14 - 27 Jul 2002
დეტალური ჩანაწერი - მსგავსი ჩანაწერები
8.
Color Transparency at COMPASS - Feasibility Study / Sandacz, Andrzej (Soltan Inst., Swierk) ; Grajek, Oleg A. (Soltan Inst., Swierk) ; Moinester, Murray (Tel Aviv U.) ; Piasetzky, Eli (Tel Aviv U.)
We examine the potential of the COMPASS experiment at CERN to study color transparency via exclusive vector meson production in hard muon-nucleus scattering. [...]
hep-ex/0106076 ; TAUP-2671-2001 ; TAUP-2671. - 2001. - 26 p.
Access to fulltext document - Access to fulltext document - Access to fulltext document - Access to fulltext document - Access to fulltext document - Access to fulltext document - Access to fulltext document - Access to fulltext document - Access to fulltext document - Access to fulltext document
დეტალური ჩანაწერი - მსგავსი ჩანაწერები
9.
Exclusive meson production at COMPASS / Pochodzalla, Josef (Heidelberg, Max Planck Inst.) ; Mankiewicz, Lech (Munich, Tech. U.) ; Moinester, Murray (Tel Aviv U.) ; Piller, Gunther (Munich, Tech. U.) ; Sandacz, Andrzej (Soltan Inst., Swierk) ; Vanderhaeghen, Marc (Mainz U., Inst. Phys.)
We explore the feasibility to study exclusive meson production (EMP) in hard muon-proton scattering at the COMPASS experiment. These measurements constrain the off-forward parton distributions (OFPD's) of the proton, which are related to the quark orbital contribution to the proton spin..
hep-ph/9909534.- 1999 - 8 p. - Published in : , pp. 218-225 Access to fulltext document: PDF; Preprint: PDF; External link: hep-ph/9909534 PDF
In : 6th International Jlab Workshop on Exclusive and Semi-exclusive Processes at High Momentum Transfer, Newport News, VA, USA, 20 - 22 May 1999
დეტალური ჩანაწერი - მსგავსი ჩანაწერები

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