Refine
Year of publication
Language
- English (57)
Has Fulltext
- yes (57)
Is part of the Bibliography
- no (57)
Keywords
- LHC (4)
- Kollisionen schwerer Ionen (3)
- heavy ion collisions (3)
- ALICE (2)
- High Energy Physics - Phenomenology (2)
- Nuclear Theory (2)
- quark-gluon-plasma (2)
- 900 GeV (1)
- ALICE experiment (1)
- Comparison with QCD (1)
Institute
The ALICE experiment has measured low-mass dimuon production in pp collisions at √s=7 TeV in the dimuon rapidity region 2.5<y<4. The observed dimuon mass spectrum is described as a superposition of resonance decays (η,ρ,ω,η′,ϕ) into muons and semi-leptonic decays of charmed mesons. The measured production cross sections for ω and ϕ are σω(1<pt<5 GeV/c,2.5<y<4)=5.28±0.54(stat)±0.49(syst) mb and σϕ(1<pt<5 GeV/c,2.5<y<4)=0.940±0.084(stat)±0.076(syst) mb. The differential cross sections d2σ/dydpt are extracted as a function of pt for ω and ϕ. The ratio between the ρ and ω cross section is obtained. Results for the ϕ are compared with other measurements at the same energy and with predictions by models.