QM 2011 - XXII International Conference on Ultrarelativistic Nucleus-Nucleus Collisions

May 22 – 28, 2011
Centre Bonlieu
Europe/Zurich timezone

Study of central production in pp-collisions at √s=7 TeV with the ALICE experiment

Not scheduled
Théâtre National (Centre Bonlieu)

France
Board: 65

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)

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