Study of baryonic resonances and ρ meson production in the reaction pp → ppπ+π- at 3.5 GeV with HADES

被引：1
|
作者：
Belounnas, Amel [1 ]
机构：
[1] Univ Paris Saclay, Univ Paris Sud, CNRS IN2P3, Inst Phys Nucl, F-91406 Orsay, France
来源：
MESON 2018 - 15TH INTERNATIONAL WORKSHOP ON MESON PHYSICS | 2019年 / 199卷
关键词：
D O I：
10.1051/epjconf/201919902012
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
We report on measurements of baryon resonance and p meson production in the exclusive pp -> pp pi(+)pi(-) channel at a beam kinetic energy of 3.5 GeV measured with the HADES experimental setup. The differential distributions are compared to Monte Carlo simulations based on a resonance model assuming an incoherent sum of contributions of various baryonic resonances with masses below 2 GeV and using inputs from one pion production measured in the same experiment. A very good description of the two pion production is achieved allowing for an estimate of the contribution of one and double baryon-resonance excitation. Using appropriate kinematical cuts the rho meson signal could also be extracted.
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