Direct-Channel Resonances from Regge-Pole Exchange
Direct-Channel Resonances from Regge-Pole Exchange
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来自 Regge-Pole 交换的直接通道共振
DOI：
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发表时间：
1968
期刊：
影响因子：
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通讯作者：
C. Schmid
中科院分区：
文献类型：
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作者：
C. Schmid
我是P Regge。在直接通道中，对具有螺旋度翻转的nN电荷交换散射的振幅进行了分波分析。这在阿根图上产生了与显著的实验N* 共振相对应的共振圈。我们考虑具有螺旋翻转的nN电荷交换散射的p Regge振幅，BCEX ·通常的参数化和对高能数据的拟合，PL = 5.8 18.2 BeV/c，是：其中aCt）= 0.57 + 1.08t，E是n的实验室能量。选择E0 = 0.7BeV和~（t）= const.= 60.4mb，可以正确地拟合近前峰和次峰的相对高度。现在我们将这个表达式外推到PL = 1.7 BeV/c，并检查它是否大致符合dcr/dt。2特别要注意的是，在t ~ -0.6 Bev 2处的下降持续到该能量，并且近前锋的幅度
The p Regge. amplitude for nN charge exchange scattering with helicity flip is partial-wave analyzed in the direct channel. This produces resonance circles on the Argand diagram corresponding to the prominent experimental N* resonances. We consider the p Regge amplitude for nN charge exchange scattering with helicity flip, BCEX • The usual parametrization and fit to the high-energy data, PL = 5.8 18.2 BeV/c, is: l -ina 1 e sin na r(a) , (1) where aCt) = 0.57 + 1.08 t, and E is the laboratory energy of the n • Choosing EO = 0.7 BeV and ~(t) = const. = 60.4 mb one correctly fits the relative height of the near forward peak and the secondary peak. We now extrapolate this expression down to PL = 1.7 BeV/c and check that it roughly fits dcr/dt. 2 Note in particular that the dip at t ~ -0.6 Bev2 persists down to this energy and that the magnitudes of the near forward