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arXiv 1109.0176nucl-exhep-exnucl-th
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质子-质子和质子-中子碰撞中包容性K ~+产生的比较

Comparison of inclusive K+ production in proton-proton and proton-neutron collisions

Yu. Valdau, V. Koptev, S. Barsov, M. Buescher, A. Dzyuba, M. Hartmann, A. Kacharava, I. Keshelashvili, A. Khoukaz, S. Mikirtychiants, M. Nekipelov, A. Polyanski… 展开作者

Yu. Valdau, V. Koptev, S. Barsov, M. Buescher, A. Dzyuba, M. Hartmann, A. Kacharava, I. Keshelashvili, A. Khoukaz, S. Mikirtychiants, M. Nekipelov, A. Polyanskiy, F. Rathmann, H. Stroeher, Yu. N. Uzikov, C. Wilkin

摘要:

利用COSY-Juelich的ANKE谱仪,在1.826,1.920,2.020和2.650 GeV四个束流能量下,测量了质子-质子和质子-氘核碰撞中小角度产生的K+的动量谱。在对费米运动和阴影进行修正后,数据表明,在阈值附近的K+产生在pp-比pn诱导的反应更强。然而,在pn情况下,这种差异的大部分可以由未观察到的K 0产生来弥补。

英文摘要:

The momentum spectra of K+ produced at small angles in proton-proton and proton-deuteron collisions have been measured at four beam energies, 1.826, 1.920, 2.020, and 2.650 GeV, using the ANKE spectrometer at COSY-Juelich. After making corrections for Fermi motion and shadowing, the data indicate that K+ production near threshold is stronger in pp- than in pn-induced reactions. However, most of this difference could be made up by the unobserved K0 production in the pn case.

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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