122 citations · 1.8k across the 74 of their papers we have counts for
11 papers · 1 filter
Phenomenology of Relativistic Reaction Amplitudes within the Isobar Approximation
JPAC Collaboration, A. Jackura, C. Fernández-Ramírez +7
Further progress in hadron spectroscopy necessitates the phenomenological description of three particle reactions. We consider the isobar approximation, where the connected part of…
Determination of the pole position of the lightest hybrid meson candidate
JPAC Collaboration, A. Rodas, A. Pilloni +9
Mapping states with explicit gluonic degrees of freedom in the light sector is a challenge, and has led to controversies in the past. In particular, the experiments have reported t…
Pole position of the from -decay
JPAC Collaboration, M. Mikhasenko, A. Pilloni +8
We perform an analysis of the three-pion system with quantum numbers produced in the weak decay of leptons. The interaction is known to be dominated by the axia…
Measurement of -weighted Sivers asymmetries in leptoproduction of hadrons
M. G. Alexeev, G. D. Alexeev, A. Amoroso +209
The transverse spin asymmetries measured in semi-inclusive leptoproduction of hadrons, when weighted with the hadron transverse momentum , allow for the extraction of importan…
Letter of Intent: A New QCD facility at the M2 beam line of the CERN SPS (COMPASS++/AMBER)
B. Adams, C. A. Aidala, R. Akhunzyanov +263
A New QCD facility at the M2 beam line of the CERN SPS COMPASS++/AMBER
What is the right formalism to search for resonances? II. The pentaquark chain
JPAC Collaboration, A. Pilloni, J. Nys +8
We discuss the differences between several partial-wave analysis formalisms used in the construction of three-body decay amplitudes involving fermions. Specifically, we consider th…
Khuri-Treiman equations for scattering
JPAC Collaboration, M. Albaladejo, N. Sherrill +7
The Khuri-Treiman formalism models the partial-wave expansion of a scattering amplitude as a sum of three individual truncated series, capturing the low-energy dynamics of the dire…
Light isovector resonances in at 190 GeV/
M. Aghasyan, M. G. Alexeev, G. D. Alexeev +221
We have performed the most comprehensive resonance-model fit of states using the results of our previously published partial-wave analysis (PWA) of a large data set of…
Transverse Extension of Partons in the Proton probed by Deeply Virtual Compton Scattering
R. Akhunzyanov, M. G. Alexeev, G. D. Alexeev +223
We report on the first measurement of exclusive single-photon muoproduction on the proton by COMPASS using 160 GeV/ polarized and beams of the CERN SPS impinging on…
K over K multiplicity ratio for kaons produced in DIS with a large fraction of the virtual-photon energy
R. Akhunzyanov, M. G. Alexeev, G. D. Alexeev +207
The K over K multiplicity ratio is measured in deep-inelastic scattering, for the first time for kaons carrying a large fraction of the virtual-photon energy. The d…
First measurement of transverse-spin-dependent azimuthal asymmetries in the Drell-Yan process
Bakur Parsamyan
The COMPASS experiment at CERN, as part of its programme addresses the exploration of the transverse spin structure of the nucleon by measuring spin (in)dependent azimuthal asymmet…