20190118 08:13 
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20171201 07:57 
Recent Results on LightMeson Spectroscopy from COMPASS
/ Wallner, Stefan (Munich, Tech. U.)
/COMPASS Collaboration
The main goal of the spectroscopy program at COMPASS is to explore the lightmeson spectrum below about $2\,\text{GeV}/c^2$ in diffractive production. Our flagship channel is the decay into three charged pions: $p + \pi^\to \pi^\pi^\pi^+ + p_\text{recoil}$, for which COMPASS has acquired the so far world's largest dataset of roughly $50\,\text{M}$ exclusive events using an $190\,\text{GeV}/c$ $\pi^$ beam. [...]
arXiv:1711.09782.
SISSA, 20171127  7 p.
 Published in : PoS Hadron2017 (2018) 032
Fulltext: PDF; Preprint: PDF; External link: PoS server
In : XVII International Conference on Hadron Spectroscopy and Structure, Salamanca, Spain, 25  29 Sep 2017, pp.032

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20170225 07:55 
The $t$dependence of the pure DVCS cross section at COMPASS
/ Joerg, Philipp (Freiburg U.)
/COMPASS Collaboration
The key reactions to study the Generalised Parton Distributions are Deeply Virtual Compton Scattering (DVCS) and Deeply Virtual Meson Production (DVMP). At COMPASS, these processes are investigated using a high intensity muon beam with a momentum of 160\,GeV/c and a 2.5\,mlong liquid hydrogen target. [...]
arXiv:1702.06315.
SISSA, 20161010  7 p.
 Published in : PoS: DIS2016 (2016) , pp. 235
Fulltext: PDF; Preprint: PDF; External links: PoS server; 00007 COMPASS results for the tslope parameter (\textbf{left}) and the extracted transverse size of the partonic distribution of the nucleon (\textbf{right}), compared with previous HERA measurements.; 00003 Exclusivity variables: The whole Monte Carlo estimate is shown in red while in grey only the $\pi^0$ contamination is shown. The variables $\Delta \varphi$, $\Delta p_{\bot}$ and $M_X^2$ are defined in equation \ref{eq_phi}\ref{eq_m} while $\Delta z_{A}$ encodes a reverse vertex pointing. The blue dotted lines indicate the applied cuts.; 00006 COMPASS results for the tslope parameter (\textbf{left}) and the extracted transverse size of the partonic distribution of the nucleon (\textbf{right}), compared with previous HERA measurements.; 00001 Exclusivity variables: The whole Monte Carlo estimate is shown in red while in grey only the $\pi^0$ contamination is shown. The variables $\Delta \varphi$, $\Delta p_{\bot}$ and $M_X^2$ are defined in equation \ref{eq_phi}\ref{eq_m} while $\Delta z_{A}$ encodes a reverse vertex pointing. The blue dotted lines indicate the applied cuts.; 00002 Exclusivity variables: The whole Monte Carlo estimate is shown in red while in grey only the $\pi^0$ contamination is shown. The variables $\Delta \varphi$, $\Delta p_{\bot}$ and $M_X^2$ are defined in equation \ref{eq_phi}\ref{eq_m} while $\Delta z_{A}$ encodes a reverse vertex pointing. The blue dotted lines indicate the applied cuts.; 00000 Exclusivity variables: The whole Monte Carlo estimate is shown in red while in grey only the $\pi^0$ contamination is shown. The variables $\Delta \varphi$, $\Delta p_{\bot}$ and $M_X^2$ are defined in equation \ref{eq_phi}\ref{eq_m} while $\Delta z_{A}$ encodes a reverse vertex pointing. The blue dotted lines indicate the applied cuts.; 00005 The $t$differential DVCS cross section as a function of $t$; 00004 Acceptance correction factors as a function of $t$, $Q^2$ and $\nu$.; Fulltext
In : 24th International Workshop on Deep Inelastic Scattering and related subjects, Hamburg, Germany, 11  15 Apr 2016, pp.235

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20160929 01:12 
Photons interacting with Hadrons at COMPASS
/ Friedrich, Jan Michael (Technische Universitaet Muenchen (DE))
/COMPASS NA58 Collaboration
COMPASS is a multipurpose experiment operated at CERN for investigations of the strong interaction from low to medium energy scales. At low energies, photonpion interactions provide input for understanding the effective dynamics of strongly bound states of quarks and gluons, most prominently the recent measurement of the polarisability of the charged pion. [...]
COMPASSPROC2016001.
Geneva : CERN, 2015  8.
Fulltext: PDF;

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20160928 07:58 
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