This paper gives the 2010 self-consistent set of values of the basic constants and conversion factors of physics and chemistry recommended by the Committee on Data for Science and Technology (CODATA) for international use. The 2010 adjustment takes into account the data considered in the 2006 adjustment as well as the data that became available from 1 January 2007, after the closing date of that adjustment, until 31 December 2010, the closing date of the new adjustment. Further, it describes in detail the adjustment of the values of the constants, including the selection of the final set of input data based on the results of least-squares analyses. The 2010 set replaces the previously recommended 2006 CODATA set and may also be found on the World Wide Web at physics.nist.gov/constants.

/pdf/codata-recommended-values-of-the-fundamental-physical-4bsdant71c.pdf

CODATA Recommended Values of the Fundamental Physical Constants: 2006

We present the achievements of the last years of the experimental and theoretical groups working on hadronic cross section measurements at the low energy e+e- colliders in Beijing, Frascati, Ithaca, Novosibirsk, Stanford and Tsukuba and on tau decays. We sketch the prospects in these fields for the years to come. We emphasise the status and the precision of the Monte Carlo generators used to analyse the hadronic cross section measurements obtained as well with energy scans as with radiative return, to determine luminosities and tau decays. The radiative corrections fully or approximately implemented in the various codes and the contribution of the vacuum polarisation are discussed.

/pdf/quest-for-precision-in-hadronic-cross-sections-at-low-energy-55lj6wbfja.pdf

Quest for precision in hadronic cross sections at low energy: Monte Carlo tools vs. experimental data

The spectroscopy of light and heavy mesons is reviewed with emphasis on glueballs, hybrids, and tetraquarks.

Glueballs, Hybrids, Multiquarks. Experimental facts versus QCD inspired concepts

Hadronic Vacuum Polarization

We have measured the cross section σ(e+e–→π+π–γ) with the KLOE detector at DAΦNE, at an energy W=M
 φ
 =102 GeV From the dependence of the cross section on $m(\pi^+\pi^{-})=\sqrt{W^2-2WE_\gamma}$
 , where E
 γ
 is the energy of the photon radiated from the initial state, we extract σ(e+e–→π+π–) for the mass range 035<m2(π+π–)<095 GeV2 From our result we extract the pion form factor and the hadronic contribution to the muon anomaly, a
 μ
 

Determination of σ(e+e–→ π+ π–) from radiative processes at DAΦNE

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Determination of σ(e+e–→ π+ π–) from radiative processes at DAΦNE