[PDF] Top 20 Highlights from Compass in hadron spectroscopy

... Abstract. Since Quantum Choromdynamics allows for gluon self-coupling, quarks and gluons cannot be ob- served as free particles, but only their bound states, the hadrons. This so-called confinement phenomenon is ... See full document

... The COMPASS fixed-target experiment is a facility to study QCD, covering a large range in momen- tum transfer from larger than 1 GeV 2 / c 2 down to smaller than 10 −3 GeV 2 / c 2 ...of hadron ... See full document

... The COMPASS experiment at the CERN-SPS studies the spectrum and the structure of hadrons by scattering high energy hadrons and polarised muons off various fixed ...the hadron programme comprise ... See full document

... The Compass experiment is a multi-purpose fixed-target spectrometer located at CERN’s Prevessin- ...secondary hadron and tertiary muon beams by the Super Proton Synchrotron. Compass is a two-stage ... See full document

... the COMPASS setup for meson spec- troscopy was studied in a short pilot run in 2004, where a 190 GeV /c π − beam was shot onto a fixed lead ...experience from this run the spectrometer was upgraded in order ... See full document

... [9] M. Aghasyan et al. (COMPASS Collaboration), Phys. Rev. D 98, 092003 (2018) [10] C. Adolph et al. (COMPASS Collaboration), Phys. Rev. D95, 032004 (2017) [11] C. Adolph et al. (COMPASS ... See full document

... The development of Quantum Chromodynamics (QCD) brought up new features which had been never treated in any field theory before. Besides the interaction of quark and gluon fields, the self- coupling of gluons has to be ... See full document

... secondary hadron and tertiary muon beams from the CERN 450 GeV super proton synchrotron ...in hadron physics, with high-precision and high-rate capable tracking, particle identification and ... See full document

... the COMPASS experiment at CERN is to study the structure and dynamics of ...The spectroscopy of light mesons is performed with negative (mostly π − ) and positive (p, π + ) hadron beams with a ... See full document

... light hadron and charmonium spectroscopy, as well as charmonium decays ...recent highlights from the BESIII, thereby, illustrating the potential of the BESIII ... See full document

... The Common Muon and Proton Apparatus for Structure and Spectroscopy (COMPASS) is a fixed- target experiment located at CERN’s Super Proton Synchrotron (SPS). It is aimed to study the struc- ture and dynamics ... See full document

... Hadron spectroscopy provides another laboratory in which to explore the dynamics of strongly in- teracting quarks and gluons confined into ...baryon spectroscopy, the focus lies on multi- strange ... See full document

... tricky from a theoretical point of view because the strength of the residual interaction is usually model dependent and one can generate spurious states if this interaction is not under ... See full document

... Q 2 1 , Q 2 2 < 60 GeV 2 . This measurement of the TFF at large Q 2 1 and Q 2 2 allows the predictions of models inspired by perturbative QCD (pQCD) to be distinguished from those of the vector dominance model ... See full document

... form of the LF effective potential, corresponding to a quadratic dilaton modification of AdS space to include confinement. We obtain an effective one-dimensional quantum field theory which retains the fundamental ... See full document

... contribution from the low-energy region, where the s-dependence can be parameterized with a finite number of partial waves, and the high-energy region, where the amplitude is determined through ...removed ... See full document

... exotic hadron states? Try to solve these problems and explore new features of the exotic hadrons, BESIII continue to work on the measurements of them and some features ...light hadron(s) and hidden/open ... See full document

... obtained from fitting U distri- butions and signal efficiencies obtained from signal Monte Carlo, the absolute branching fractions are ...results from PDG2012 [16] and CLEO-c results [54] are also ... See full document

... The PANDA experiment will also have another big advantage. In p p ¯ annihilation it is possible to produce all final states that have q q ¯ quantum numbers, unlike e ` e ´ interactions where only 1 ´´ final states can be ... See full document

... The two ensembles differ only in their physical volume with all other parameters fixed, with the bigger one of the two boxes having a linear spatial extent of L = 5.5 fm, which to the best of our knowledge is the biggest ... See full document