首页> 外文期刊>Nuclear Physics, A: Journal Devoted to the Experimental Study of the Fundamental Constituents of Matter and Their Actions >Abundant strange sea quarks in the nucleon and flavor asymmetry of the light sea quarks in the octet baryon at small x
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Abundant strange sea quarks in the nucleon and flavor asymmetry of the light sea quarks in the octet baryon at small x

机译:小x处八重子重子中核仁的丰富奇异海夸克和轻海夸克的风味不对称。

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摘要

By regularizing the sum rules from the current anti-commutation relation on the null plane, we first explain the relation between the high-energy behavior of the total cross section of pseudo-scalar-nucleon scattering and the small-x limit of the structure function F2 in lepton-nucleon scattering. Then, by assuming that the ratio of the total cross section of pion-nucleon scattering to that of kaon-nucleon scattering in the high-energy region is kept within the high-energy limit, we show that, in the very-small-x region in the nucleon, the strange sea quark becomes more abundant than the up and the down sea quarks. Further, we find that the regularization-independent finite sum rules that originate from the spontaneous chiral symmetry breaking of the vacuum take similar values as those where the sea quarks take symmetric values in the very-small-x region. We apply the method to the sea quarks of the octet baryon and give many similar sum rules as in the nucleon case; we also give the asymmetry of the sea quarks in the very-small-x region.
机译:通过对零平面上当前反换向关系的和规则进行正则化,我们首先解释伪标量-核子散射总截面的高能行为与结构函数的小x极限之间的关系F2在轻子-核子散射中。然后,通过假设高能区中π-核子散射的总截面与kaon-核子散射的总截面之比保持在高能限内,我们表明,在非常小的x中在核子区域,奇怪的海夸克变得比上下海夸克更丰富。此外,我们发现源于真空的自发手性对称性破坏的与正则化无关的有限和规则的取值与海夸克在非常小的x区域取对称值的取值相似。我们将该方法应用于八位重子的海夸克,并给出了许多与核子情况相似的求和规则;我们还给出了非常小的x区域中海夸克的不对称性。

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