Conveners
Baryon formfactors
- Alexander Milstein (Budker Institute of Nuclear Physics)
Dr
Kai Zhu
(Institute of High Energy Physics)
28/02/2019, 15:50
Baryon Form Factors and proton radius
Invited Oral
In this talk, I shall present some recent progresses at BESIII for the studies of baryon form factors, including the measuement of Lambda electromagnetic form factors, the
proton electromagnetic form factor in e+e-->p pbar in energy region 2.0 - 3.08 GeV. These results will be followed by a short discussion about how does that improve our
knowledge of the baryon form factors and the...
Prof.
Evgeny Solodov
(BINP)
28/02/2019, 16:30
Baryon Form Factors and proton radius
Invited Oral
A study of hadron production at the nucleon-antinucleon threshold has been
performed with the CMD-3 detector at the VEPP-2000 $e^+e^-$ collider.
A very fast rise with about 1 MeV width has been observed in the $e^+e^- \to p\bar p$ cross section.
A sharp drop in the $e^+e^- \to 3(\pi^+\pi^-)$ cross section has been confirmed and found
to have a less than 2 MeV width,
in agreement with...
Dr
Seongbae Yang
(Korea University)
28/02/2019, 16:50
Spectroscopy of light and heavy quarks
Invited Oral
Although 10 years have passed since the last beam time of Belle, baryon spectroscopy analysis using 980 $\rm fb^{-1}$ data sample collected by the KEKB $e^{+}e^{-}$ collider near $\Upsilon$ resonances is still active. Over the last few years, we have discovered new excited $\Omega$ and $\Xi$ baryons. In the charmed baryon region, we observed a doubly Cabbibo-suppressed decay of...
Dr
Jan Friedrich
(TU München)
28/02/2019, 17:10
Baryon Form Factors and proton radius
Invited Oral
CERN provides the large variety of high-energy beams for nuclear and particle physics research. One is the beam line M2 which is optimized to deliver an intense muon beam, but also hadron beams of both polarities. They are brought to an overground hall, which is used since many years almost exclusively by the COMPASS collaboration, with a broad experimental physics program on Quantum...
Prof.
Alexander Dorokhov
(JINR)
28/02/2019, 17:30
Baryon Form Factors and proton radius
Invited Oral
Brief review of the proton radius problem is given. In the framework of the quasipotential method in quantum electrodynamics we calculate the contribution of light pseudoscalar (PS) and axial-vector (AV) mesons to the interaction operator of a muon and a proton in muonic hydrogen atom. The coupling of mesons with the muon is via two-photon intermediate state. The parametrization of the...
Prof.
Andrzej Kupsc
(Uppsala University)
28/02/2019, 17:50
Baryon Form Factors and proton radius
Invited Oral
The well-defined and simple, initial state makes a baryon-antibaryon
pair production at an electron-positron collider a perfect system to
test discrete symmetries in the baryon sector and to study baryon
properties. In particular the production yields are much enhanced
at the vector resonances such as J/psi and psi'. The spin
orientations of the baryon and antibaryon are correlated...
Dr
Alexey Zhevlakov
(TSU)
28/02/2019, 18:10
Baryon Form Factors and proton radius
Invited Oral
Here will be present an improved estimate of the CPV coupling constants of the and 0 mesons to two pions using upper limits from data on the neutron electric dipole moment (nEDM). Using a phenomenological Lagrangian approach based on nonderivative couplings of the pseudoscalar mesons with nucleons, we include the full momentum dependence of the eta-pi-pi or eta-prime-pi-pi couplings in a...
