Speaker
Xianguo Lu
(Physikalisches Institut-Ruprecht-Karls-Universitaet Heidelberg)
Description
The ALICE experiment consists of a central barrel covering the pseudo-rapidity range $-0.9<\eta<0.9$ and of additional detectors which can be used to define pseudo-rapidity gaps on both sides (\mbox{$-3.7<\eta<-0.9$} and \mbox{$0.9<\eta<5.1$}). The low $p_{T}$ threshold of the central barrel gives ALICE a unique opportunity to study the low mass sector of central diffractive production at the LHC.
ALICE has collected proton-proton collision data at $\sqrt{s}=7$ TeV from March to November 2010. I will report on the analysis of events with a double-gap signature based on this data sample of about $4\times 10^8 $ minimum bias events. An enhancement of $f_0(980)$ and $f_2(1270)$ is seen in these double-gap events as compared to no-gap events.
Primary author
Xianguo Lu
(Physikalisches Institut-Ruprecht-Karls-Universitaet Heidelberg)
