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  • : PHENIX has measured the electron-positron pair mass spectrum from 0 to 8 GeV/c(2) in p-p collisions at root s = 200 GeV. The contributions from light meson decays to e( )e(-) pairs have been determined based on measurements of hadron production cross sections by PHENIX. Within the systematic uncertainty of similar to 20% they account for all e( )e(-) pairs in the mass region below similar to 1 GeV/c(2). The e( )e(-) pair yield remaining after subtracting these contributions is dominated by semileptonic decays of charmed hadrons correlated through flavor conservation. Using the spectral shape predicted by PYTHIA, we estimate the charm production cross section to be 544 /- 39(stat) /- 142(syst) /- 200(model) pb. which is consistent with QCD calculations and measurements of single leptons by PHENIX.
  • : PHENIX has measured the electron-positron pair mass spectrum from 0 to 8 GeV/c(2) in p-p collisions at root s = 200 GeV. The contributions from light meson decays to e( )e(-) pairs have been determined based on measurements of hadron production cross sections by PHENIX. Within the systematic uncertainty of similar to 20% they account for all e( )e(-) pairs in the mass region below similar to 1 GeV/c(2). The e( )e(-) pair yield remaining after subtracting these contributions is dominated by semileptonic decays of charmed hadrons correlated through flavor conservation. Using the spectral shape predicted by PYTHIA, we estimate the charm production cross section to be 544 /- 39(stat) /- 142(syst) /- 200(model) pb. which is consistent with QCD calculations and measurements of single leptons by PHENIX. (en)
Title
  • Dilepton mass spectra in p plus p collisions at root s=200 GeV
  • Dilepton mass spectra in p plus p collisions at root s=200 GeV (en)
skos:prefLabel
  • Dilepton mass spectra in p plus p collisions at root s=200 GeV
  • Dilepton mass spectra in p plus p collisions at root s=200 GeV (en)
skos:notation
  • RIV/00216208:11320/09:00206781!RIV10-MSM-11320___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(LA08015)
http://linked.open...iv/cisloPeriodika
  • 4-5
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 310604
http://linked.open...ai/riv/idVysledku
  • RIV/00216208:11320/09:00206781
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • Dilepton; spectra; collisions; s=200; GeV (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • NL - Nizozemsko
http://linked.open...ontrolniKodProRIV
  • [BA8B5C469475]
http://linked.open...i/riv/nazevZdroje
  • Physics Letters. B
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 670
http://linked.open...iv/tvurceVysledku
  • Adare, A.
  • Finger, Miroslav
  • Finger, Jr., Michael
  • Slunecka, Miloslav
http://linked.open...ain/vavai/riv/wos
  • 000262895800013
issn
  • 0370-2693
number of pages
http://localhost/t...ganizacniJednotka
  • 11320
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