"Table 15b" of "Ground and excited charmonium state production in p+p collisions at sqrt(s)=200 GeV"

メタデータ

公開日
2023-01-01
DOI
  • 10.17182/hepdata.141377.v1/t6
  • 10.17182/hepdata.141377.v1/t5
公開者
HEPData
データ作成者 (e-Rad)
  • PHENIX Collaboration

説明

We report on charmonium measurements [$J/\psi$ (1S), $\psi^{\prime}$ (2S), and $\chi_c$ (1P)] in $p$+$p$ collisions at $\sqrt{s}$ = 200 GeV. We find that the fraction of $J/\psi$ coming from the feed-down decay of $\psi^{\prime}$ and $\chi_c$ in the midrapidity region ($|\eta|$ < 0.35) is 9.6 $\pm$ 2.4% and 32 $\pm$ 9%, respectively. We also report new, higher statistics $p_T$ and rapidity dependencies of the $J/\psi$ yield via dielectron decay in the same midrapidity range and at forward rapidity (1.2 < $|\eta|$ < 2.4) via dimuon decay. These results are compared with measurements from other experiments and discussed in the context of current charmonium production models.

$J/\psi$ counts obtained from the dimuon decay analysis of four different data sets, determined using the fit function. The S and N following 2006 and 2008 indicate the data sets for the south and north forward arms.

関連論文

もっと見る

詳細情報 詳細情報について

ページトップへ