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北美退伍军人节(Veterans Day),12 日无更新
arXiv 1005.2797nucl-thhep-phnucl-ex
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用Regge加手征夸克方法研究质子产生$η$

$η$ production off the proton in a Regge-plus-chiral quark approach

Jun He, B. Saghai

摘要:

手征组分夸克模型的方法,体现s-和u-通道的交换,补充与Reggeized处理的t-通道。获得的模型允许数据$π^- p \to ηn$和$γp \to ηp$得到满意的描述。对于后者的反应,最近公布的数据CLAS和CBELSA/TAPS合作在系统总能量范围$1.6 \lesssim W \lesssim 2.8$ GeV的,由于列入Reggeized轨迹,而不是简单的$ρ$和$ω$极点,很好地再现。在所考虑的过程中,“失踪”的共振的贡献被认为是可以忽略不计的。

英文摘要:

A chiral constituent quark model approach, embodying s- and u-channel exchanges,complemented with a Reggeized treatment for t-channel is presented. A model is obtained allowing data for $π^- p \to ηn$ and $γp \to ηp$ to be describe satisfactorily. For the latter reaction, recently released data by CLAS and CBELSA/TAPS Collaborations in the system total energy range $1.6 \lesssim W \lesssim 2.8$ GeV are well reproduced due to the inclusion of Reggeized trajectories instead of simple $ρ$ and $ω$ poles. Contribution from "missing" resonances is found to be negligible in the considered processes.

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。

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