Skewed and Flexible Skewed Distributions: A Modern Look at the Distribution of BMI
نویسندگان
چکیده
منابع مشابه
Skewed Parton Distributions ∗
Applications of perturbative QCD to deeply virtual Compton scattering and hard exclusive electroproduction processes require a generalization of usual parton distributions for the case when long-distance information is accumulated in nonforward matrix elements of quark and gluon light-cone operators. We describe two types of nonperturbative functions parametrizing such matrix elements: double d...
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Skewed symmetric distributions have attracted a great deal of attention in the last few years. One of them, the skewed t distribution suffers from limited applicability because of the lack of finite moments. This note proposes an alternative to the skewed t distribution, which we refer to as skewed truncated t distribution. It is defined by the pdf f(z) = 2g(x)G(Ax), where g(.) and G(.) are tak...
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We show that the diffractive structure function is perturbatively calculable in the domain where the diffractive mass is small but still outside the resonance region. In this domain, which can be characterized by Λ 2 /Q 2 ≪ 1−β ≪ Λ 2 /Q 2 , the structure function represents a new observable, which is highly sensitive to the small-x skewed gluon distribution. Our leading order calculation and th...
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The b-u skewed parton distributions (SPDs) are discussed. The SPDs allow an un-ambigous superposition of overlap and resonsance contributions and their zeroth order moments represent the B → π transition form factors. The values of the form factors at maximum recoil are found to be F + (0) = F 0 (0) = 0.22 ± 0.05 in agreement with measurements of the B → ππ branching ratio. The branching ratios...
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ژورنال
عنوان ژورنال: American Journal of Undergraduate Research
سال: 2017
ISSN: 1536-4585,2375-8732
DOI: 10.33697/ajur.2017.013