arXiv 1208.42882012-08-21hep-ph

质子-质子碰撞中介子对的排他性产生

Exclusive meson pair production in proton-proton collisions

Piotr Lebiedowicz, Antoni Szczurek

备注：: 4 pp., 4 figures, talk presented by PL at MESON2012 - 12th International Workshop on Meson Production, Properties and Interaction, Krakow, Poland, 31 May - 5 June 2012
发表信息：: EPJ Web of Conferences 37, 06001 (2012)
DOI：: 10.1051/epjconf/20123706001

摘要：

本文研究了构成共振态（如$ϕ$，$f_{2}(1270)$，$f_{0}(1500)$，$f_{2}'(1525)$，$χ_{c0}$）不可约背景的高能四体$pp \to pp π^{+} π^{-}$，$pp K^{+}K^{-}$反应中介子对的唯一产生.我们考虑中心衍射的贡献介导的Pomeron和Reggeon交换和新的衍射机制的π介子/K介子发射的质子线。我们包括由于质子-质子相互作用和π/K介子再散射的吸收效应。给出了RHIC、Tevatron和LHC对撞机的总截面、π/K介子快度和横动量的微分分布以及两π/K介子不变质量的预测。最后，我们考虑了标量$χ_{c0}$介子通过$χ_{c0} \to π^{+} π^{-}$，$K^{+} K^{-}$衰变的唯一产生的测量。

英文摘要：

We present a study of the exclusive production of meson pairs in the four-body $pp \to pp π^{+} π^{-}$, $pp K^{+}K^{-}$ reactions at high energies which constitute an irreducible background to resonance states (e.g. $ϕ$, $f_{2}(1270)$, $f_{0}(1500)$, $f_{2}'(1525)$, $χ_{c0}$). We consider central diffractive contribution mediated by Pomeron and Reggeon exchanges and new diffractive mechanism of emission of pions/kaons from the proton lines. We include absorption effects due to proton-proton interaction and pion/kaon rescattering. Predictions for the total cross section and differential distributions in pion/kaon rapidity and transverse momentum as well as two-pion/kaon invariant mass are presented for the RHIC, Tevatron and LHC colliders. Finally we consider a measurement of exclusive production of a scalar $χ_{c0}$ meson via $χ_{c0} \to π^{+} π^{-}$, $K^{+} K^{-}$ decay.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

摘要：

英文摘要：

相关论文