Conveners
Muon g-2
- Marc Knecht (CNRS - CPT Marseille)
Dr
Andreas Nyffeler
(Institute of Nuclear Physics, University of Mainz, Germany)
17/06/2015, 08:00
Oral presentation
The anomalous magnetic moment of the muon is sensitive to loop
contributions from all sectors of the Standard Model and, potentially,
to virtual particles of New Physics. In fact, since many years there
is an intriguing discrepancy of 3-4 standard deviations between
experiment and theory. However, the hadronic uncertainties from vacuum
polarization and light-by-light scattering dominate...
Mr
Benedikt Kloss
(Institute for Nuclear Physics Mainz)
17/06/2015, 08:25
Oral presentation
Precise hadronic cross section measurements are an important input for the standard model prediction of $(g-2)_\mu$.
Especially, the most important hadronic cross section as input for $(g-2)\mu$, $\sigma_{\pi\pi} = \sigma(e^+e^-\rightarrow \pi^+\pi^-)$, has been measured over decades with ever increasing accuracy at accelerators in Novosibirsk, Orsay, and Frascati. More recently, the two...
Dr
Eugeny Solodov
(BINP)
17/06/2015, 08:45
Oral presentation
The BABAR Collaboration has an intensive program studying hadronic cross sections at
low-energy e+e- annihilations, accessible via initial-state radiation.
These measurements allow significant improvements in the precision of the
predicted value of the muon anomalous magnetic moment. We report here the results of
recent studies on a number of final states, as e+e- -> K+K-, e+e- -> K_S...
Dr
Giuseppe Mandaglio
(Dipartimento di Fisica e di Scienze della Terra)
17/06/2015, 09:05
Oral presentation
The KLOE experiment was the first to exploit Initial State Radiation
(ISR) processes to obtain the $e^+e^-\rightarrow\pi^+\pi^-(\gamma)$ cross section below 1 GeV.
Three measurements have been published with small angle photon in the initial state: normalized using luminosity from Bhabha in 2005 and 2008 and using $\pi\pi\gamma / \mu\mu\gamma$ ratio in 2014. An independent measurement...
Dr
Vassili Kazanin
(BINP)
17/06/2015, 09:25
Oral presentation
Since 2010 two detectors, CMD-3 and SND, have been collecting
statistics at the electron-positron collider VEPP-2000. Until first
technical stop in 2013, the integrated luminosity exceeded 60 pb$^{-1}$
for each detector in the wide c.m. energy range from
0.32 up to 2 GeV. The current status of analysis as well as
recent results are reported.
Dr
Graziano Venanzoni
(LNF-INFN)
17/06/2015, 10:15
Oral presentation
I will present a novel approach (see http://arxiv.org/abs/1504.02228 [1] Phys.
Lett. B46 (2015) 325-329), to determine the leading hadronic corrections to the muon
g-2. It consists in a measurement of the effective electromagnetic
coupling in the space-like region extracted from Bhabha scattering
data. This method can result in an alternative determination
potentially competitive with the...
Mr
Pablo Sanchez Puertas
(Johannes Gutenberg University, Mainz)
17/06/2015, 10:40
Oral presentation
Padé Approximants have been used to describe the light pseudoscalars transition form factors (TFFs) in the space-like region.
Once the low energy parameters are determined from a fit to data, they provide a systematic and model-independent tool for describing the TFFs.
We discuss their generalization to the bivariate case, which allows a systematic description for the double-virtual TFF....
Dr
Maurice Benayoun
(LPNHE Paris 6/Paris 7)
17/06/2015, 11:05
Oral presentation
The Hidden Local Symmetry (HLS) Model provides a framework
able to encompass several physical processes and give a unfied description of these
in an energy range extending up to the $\phi$ mass. However, in order
to account precisely for experimental data, it should be supplied with several
symmetry breaking schemes. Among these, an energy dependent mixing mechanism
of the vector...
