# ICHEP 2016 Chicago

3-10 August 2016
Chicago IL USA
US/Central timezone
There is a live webcast for this event.

## Charm production nearby threshold in pA-interactions at 70 GeV

Aug 6, 2016, 6:00 PM
2h
Riverwalk A/B

### Riverwalk A/B

Poster Quark and Lepton Flavor Physics

### Speaker

Dr Elena Kokoulina (On behalf of the SVD-2 Collaboration: JINR-IHEP-SINP MSU)

### Description

Summary results of the SERP-E-184 experiment at the U-70 accelerator (IHEP, Protvino) are presented. Interactions of 70 GeV proton beam with carbon, silicon and lead targets were studied to detect decays of charmed $D^0$, $\overline D^0$, $D^+$, $D^-$ mesons and $\Lambda _c^+$ baryon nearby their production threshold. The possible modification of the charm properties (the width and/or the mass) nearby phase boundary is expected. Measurements of lifetimes and masses show a good agreement with PDG data. The inclusive cross sections of a charm creation and their A-dependencies are obtained. The yields of these particles are compared to the theoretical predictions and to data of other experiments. The measured total open charm production cross section ($\sigma _{tot} (c\overline c$) = 7.1 ± 2.3(stat) ± 1.4(syst) μb/nucleon) at the collision c.m. energy $\sqrt s$ = 11.8 GeV is well above QCD model predictions. It is shown the contributions of different kinds of charmed particles to the total cross section for open charm production in proton-nucleus interactions vary with energy.

### Primary author

Dr Elena Kokoulina (On behalf of the SVD-2 Collaboration: JINR-IHEP-SINP MSU)