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### Phenomenology of pp->pp eta reaction close to threshold

Deloff, Andrzej
arXiv.org, Sep 22, 2003

• Several versions

### Measurement of prompt J/ ψ and beauty hadron production cross sections at mid-rapidity in pp collisions at $\sqrt{s}=7$ TeV

Journal of High Energy Physics, 2012, Vol.2012(11), pp.1-31 [Peer Reviewed Journal]

• Several versions

### Underlying Event measurements in pp collisions at $\sqrt {s} = 0.9$ and 7 TeV with the ALICE experiment at the LHC

Journal of High Energy Physics, 2012, Vol.2012(7), pp.1-43 [Peer Reviewed Journal]
Springer Science & Business Media B.V.
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### Phenomenology of pp->pp eta reaction close to threshold

Deloff, Andrzej
Hyper Article en Ligne (CCSd), Hyper Article en Ligne Open Access (CCSd)
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Title: Phenomenology of pp->pp eta reaction close to threshold
Author: Deloff, Andrzej
Subject: Physics ; Nuclear Theory ; Nuclear Reactions ; Physics
Description: The recent high statistics measurement of the pp - pp eta reaction at an excess energy Q=15.5 MeV has been analysed by means of partial wave decomposition of the cross section. Guided by the dominance of the final state 1S0 pp interaction (FSI), we keep only terms involving the FSI enhancement factor. The measured p-p and p-eta effective mass spectra can be well reproduced by lifting the standard on-shell approximation in the enhancement factor and by allowing for a linear energy dependence in the leading3P0-1S0,s partial wave amplitude. Higher partial waves seem to play only a marginal role.