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10 research outcomes, page 1 of 1
  • publication . Article . Other literature type . Preprint . 2018
    Open Access English
    Authors:
    Ondřej Šubrt; Ana Sofia Nunes; Jan Friedrich; Márcia Quaresma; Aram Kotzinian; Andrzej Rychter; Antonín Květoň; Annika Thiel; Boris Grube; Jan Matousek; ...
    Publisher: HAL CCSD
    Project: NSF | A Program of Medium Energ... (1506416), EC | HADRONPHYSICS3 (283286), NSF | Extensible Computational ... (1415459)

    We present a new amplitude analysis of the $\eta\pi$ $D$-wave in $\pi^- p\to \eta\pi^- p$ measured by COMPASS. Employing an analytical model based on the principles of the relativistic $S$-matrix, we find two resonances that can be identified with the $a_2(1320)$ and th...

  • publication . Preprint . Article . Other literature type . 2015
    Open Access English
    Authors:
    Philipp Jörg; Ana Sofia Nunes; Jan Friedrich; Márcia Quaresma; Aram Kotzinian; Andrzej Rychter; Boris Grube; Jan Matousek; Bakur Parsamyan; Adam Szabelski; ...
    Project: FCT | CERN/FP/116376/2010 (116376), FCT | CERN/FP/109323/2009 (109323), EC | HADRONPHYSICS3 (283286), FCT | CERN/FP/123600/2011 (123600)

    A search for the exclusive production of the $Z_c^{\pm}(3900)$ hadron by virtual photons has been performed in the channel $Z_c^{\pm}(3900)\rightarrow J/\psi \pi^{\pm}$. The data cover the range from 7 GeV to 19 GeV in the centre-of-mass energy of the photon-nucleon sys...

  • publication . Article . Other literature type . Preprint . 2018
    Open Access English
    Authors:
    Ondřej Šubrt; Ana Sofia Nunes; Alexandr Chumakov; Wen-Chen Chang; Andrzej Rychter; Antonín Květoň; Annika Thiel; Boris Grube; Jan Matousek; Bakur Parsamyan; ...
    Publisher: HAL CCSD
    Project: EC | HADRONPHYSICS3 (283286), NSF | A Program of Medium Energ... (1506416)

    Comment: 12 pages, 6 figures

  • publication . Article . 2015
    Open Access
    Authors:
    Zmeskal Johann; Sergio Bertolucci; O. Vazquez Doce; Alessandro Scordo; Matthias Laubenstein; catalina curceanu; Angelo Bassi;
    Publisher: IOP Publishing
    Project: EC | HADRONPHYSICS2 (227431), EC | HADRONPHYSICS3 (283286)

    Many experiments investigated the possible violation of the Pauli Exclusion Principle (PEP) since its discovery in 1925. The VIP(Violation of the Pauli Principle) experiment tested the PEP by measuring the probability for an external electron to be captured and undergo ...

  • publication . Article . Other literature type . Preprint . 2017
    Open Access English
    Authors:
    Philipp Jörg; Ondřej Šubrt; Ana Sofia Nunes; Jan Friedrich; Márcia Quaresma; Aram Kotzinian; Michael Pesek; Andrzej Rychter; Annika Thiel; Boris Grube; ...
    Publisher: Uppsala universitet, Kärnfysik
    Project: EC | HADRONPHYSICS3 (283286)

    The Sivers function describes the correlation between the transverse spin of a nucleon and the transverse motion of its partons. It was extracted from measurements of the azimuthal asymmetry of hadrons produced in semi-inclusive deep inelastic scattering of leptons off ...

  • publication . Other literature type . Article . Preprint . Conference object . 2019
    Open Access English
    Authors:
    Alexandr Chumakov; Ana Sofia Nunes; Ondřej Šubrt; Andrzej Rychter; Antonín Květoň; Annika Thiel; Boris Grube; Jan Matousek; Markéta Pešková; Bakur Parsamyan; ...
    Publisher: RWTH Aachen University
    Project: EC | HADRONPHYSICS3 (283286), NSF | A Program of Medium Energ... (1506416)

    The transverse spin asymmetries measured in semi-inclusive leptoproduction of hadrons, when weighted with the hadron transverse momentum $P_T$, allow for the extraction of important transverse-momentum-dependent distribution functions. In particular, the weighted Sivers...

  • publication . Preprint . Article . Other literature type . 2015
    Open Access English
    Authors:
    Philipp Jörg; Ana Sofia Nunes; Jan Friedrich; Márcia Quaresma; Aram Kotzinian; Andrzej Rychter; Boris Grube; Jan Matousek; Bakur Parsamyan; Alexander Olshevskiy; ...
    Project: FCT | CERN/FP/109323/2009 (109323), FCT | CERN/FP/116376/2010 (116376), EC | HADRONPHYSICS3 (283286), FCT | CERN/FP/123600/2011 (123600)

    Measurements of the Collins and Sivers asymmetries for charged pions and charged and neutral kaons produced in semi-inclusive deep-inelastic scattering of high energy muons off transversely polarised protons are presented. The results were obtained using all the availab...

  • publication . Article . 2015
    Open Access English
    Authors:
    Zmeskal Johann; Angelo Bassi; Sergio Bertolucci; O. Vazquez Doce; Alessandro Scordo; Matthias Laubenstein; catalina curceanu; Andreas Pichler;
    Project: EC | HADRONPHYSICS2 (227431), EC | HADRONPHYSICS3 (283286)

    In the last decades huge theoretical effort was devoted to the development of consistent theoretical models, aiming to solve the so-called "measurement problem". Among these, the Dynamical Reduction Models possess the unique characteristic to be experimentally testable,...

  • publication . Article . Other literature type . Preprint . 2015
    Open Access English
    Authors:
    Philipp Jörg; Ana Sofia Nunes; Jan Friedrich; Márcia Quaresma; Aram Kotzinian; Michael Pesek; Andrzej Rychter; Boris Grube; Jan Matousek; Wen-Chen Chang; ...
    Publisher: Uppsala universitet, Kärnfysik
    Project: EC | HADRONPHYSICS3 (283286), FCT | CERN/FP/109323/2009 (109323), FCT | CERN/FP/116376/2010 (116376), FCT | CERN/FP/123600/2011 (123600)

    In the fragmentation of a transversely polarized quark several left-right asymmetries are possible for the hadrons in the jet. When only one unpolarized hadron is selected, it exhibits an azimuthal modulation known as Collins effect. When a pair of oppositely charged ha...

  • publication . Preprint . Article . Other literature type . 2015
    Open Access English
    Authors:
    Philipp Jörg; Ana Sofia Nunes; Jan Friedrich; Márcia Quaresma; Andrzej Rychter; Boris Grube; Jan Matousek; Bakur Parsamyan; Adam Szabelski; Vladimir Tskhay; ...
    Project: FCT | CERN/FP/116376/2010 (116376), EC | HADRONPHYSICS3 (283286), FCT | CERN/FP/109323/2009 (109323), FCT | CERN/FP/123600/2011 (123600)

    The main characteristics of the COMPASS experimental setup for physics with hadron beams are described. This setup was designed to perform exclusive measurements of processes with several charged and/or neutral particles in the final state. Making use of a large part of...

10 research outcomes, page 1 of 1
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