$\pi^{0}$ and $\eta$ measurement with photon conversions in ALICE in proton-proton collisions at $\sqrt{s}$ = 7 TeV

We present a measurement of the Pi0 transverse momentum spectrum and of the Eta/Pi0 ratio in proton-proton collisions at sqrt(s) = 7 TeV at the CERN LHC. In this analysis the reconstruction of Pi0 and Eta mesons has been done via photon conversions in the central tracking system of ALICE. Therefore,...

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Detalles Bibliográficos
Autor principal: Koch, Kathrin
Lenguaje:eng
Publicado: 2011
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1016/j.nuclphysa.2011.02.059
http://cds.cern.ch/record/1335546
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author Koch, Kathrin
author_facet Koch, Kathrin
author_sort Koch, Kathrin
collection CERN
description We present a measurement of the Pi0 transverse momentum spectrum and of the Eta/Pi0 ratio in proton-proton collisions at sqrt(s) = 7 TeV at the CERN LHC. In this analysis the reconstruction of Pi0 and Eta mesons has been done via photon conversions in the central tracking system of ALICE. Therefore, this method is completely independent from the electromagnetic calorimeters. It makes the Pi0 (Eta) measurement possible down to pt = 0.4 (0.6) GeV/c with a very good resolution and a very small background. For 100 Mio. pp collisions the pt reach is 7 GeV/c. The results are compared to NLO pQCD calculations.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2011
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spelling cern-13355462021-05-03T20:01:00Zdoi:10.1016/j.nuclphysa.2011.02.059http://cds.cern.ch/record/1335546engKoch, Kathrin$\pi^{0}$ and $\eta$ measurement with photon conversions in ALICE in proton-proton collisions at $\sqrt{s}$ = 7 TeVParticle Physics - ExperimentWe present a measurement of the Pi0 transverse momentum spectrum and of the Eta/Pi0 ratio in proton-proton collisions at sqrt(s) = 7 TeV at the CERN LHC. In this analysis the reconstruction of Pi0 and Eta mesons has been done via photon conversions in the central tracking system of ALICE. Therefore, this method is completely independent from the electromagnetic calorimeters. It makes the Pi0 (Eta) measurement possible down to pt = 0.4 (0.6) GeV/c with a very good resolution and a very small background. For 100 Mio. pp collisions the pt reach is 7 GeV/c. The results are compared to NLO pQCD calculations.We present a measurement of the π 0 transverse momentum spectrum and of the η / π 0 ratio in proton-proton collisions at s = 7   TeV at the CERN LHC. In this analysis the reconstruction of π 0 and η mesons has been done via photon conversions in the central tracking system of ALICE. Therefore, this method is completely independent from the electromagnetic calorimeters. It makes the π 0 ( η ) measurement possible down to p t = 0.4   ( 0.6 )   GeV/c with a very good resolution and a very small background. For 10 8 pp collisions the p t reach is 7 GeV/c. The results are compared to NLO pQCD calculations.We present a measurement of the Pi0 transverse momentum spectrum and of the Eta/Pi0 ratio in proton-proton collisions at sqrt(s) = 7 TeV at the CERN LHC. In this analysis the reconstruction of Pi0 and Eta mesons has been done via photon conversions in the central tracking system of ALICE. Therefore, this method is completely independent from the electromagnetic calorimeters. It makes the Pi0 (Eta) measurement possible down to pt = 0.4 (0.6) GeV/c with a very good resolution and a very small background. For 100 Mio. pp collisions the pt reach is 7 GeV/c. The results are compared to NLO pQCD calculations.arXiv:1103.2217oai:cds.cern.ch:13355462011-03-14
spellingShingle Particle Physics - Experiment
Koch, Kathrin
$\pi^{0}$ and $\eta$ measurement with photon conversions in ALICE in proton-proton collisions at $\sqrt{s}$ = 7 TeV
title $\pi^{0}$ and $\eta$ measurement with photon conversions in ALICE in proton-proton collisions at $\sqrt{s}$ = 7 TeV
title_full $\pi^{0}$ and $\eta$ measurement with photon conversions in ALICE in proton-proton collisions at $\sqrt{s}$ = 7 TeV
title_fullStr $\pi^{0}$ and $\eta$ measurement with photon conversions in ALICE in proton-proton collisions at $\sqrt{s}$ = 7 TeV
title_full_unstemmed $\pi^{0}$ and $\eta$ measurement with photon conversions in ALICE in proton-proton collisions at $\sqrt{s}$ = 7 TeV
title_short $\pi^{0}$ and $\eta$ measurement with photon conversions in ALICE in proton-proton collisions at $\sqrt{s}$ = 7 TeV
title_sort $\pi^{0}$ and $\eta$ measurement with photon conversions in alice in proton-proton collisions at $\sqrt{s}$ = 7 tev
topic Particle Physics - Experiment
url https://dx.doi.org/10.1016/j.nuclphysa.2011.02.059
http://cds.cern.ch/record/1335546
work_keys_str_mv AT kochkathrin pi0andetameasurementwithphotonconversionsinaliceinprotonprotoncollisionsatsqrts7tev

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