Medium-induced collinear radiation via soft collinear effective theory
نویسندگان
چکیده
منابع مشابه
Soft - Collinear - Effective - Theory
We analyze the charmless two-body B → V P decays in the soft-collinear-effective-theory (SCET), where V (P ) denotes a light vector (pseudoscalar) meson. Using the current experimental data, we find two solutions in χ fit for the 16 non-perturbative inputs responsible for the 87 B → PP and B → V P decay channels in SU(3) symmetry. Chirally enhanced penguins can only change several charming peng...
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In this talk I review soft collinear effective theory. After a discussion of the formalism and properties of the effective field theory, I turn to phenomenology. I present results on colorsuppressed B → D decays, and on the Υ radiative decay spectrum.
متن کاملNotes on the Soft-Collinear Effective Theory
Contents 1 Introduction to SCET 4 1. 1 Introduction to SCET These notes provide reading material on the Soft-Collinear Effective Theory (SCET) for Chrisitian's SCET Lectures in TASI 2013. They also served as lecture notes for Iain's 2013 EFT course taught at MIT. The notes assume some familiarity with various basic effective field theory (EFT) concepts, including power counting with operator di...
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In general, to understand hadronic uncertainties we need a separation of short p ∼ Q and long p ∼ ΛQCD distance fluctuations. For processes in QCD with momentum transfers Q ≫ ΛQCD, the short distance part is calculable in terms of Wilson coefficients or hard scattering functions. The long distance contributions can be arranged into universal non-perturbative matrix elements which can be extract...
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The factorization of soft and ultrasoft gluons from collinear particles is shown at the level of operators in an effective field theory. Exclusive hadronic factorization and inclusive partonic factorization follow as special cases. The leading order Lagrangian is derived using power counting and gauge invariance in the effective theory. Several species of gluons are required, and softer gluons ...
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ژورنال
عنوان ژورنال: Journal of Physics G: Nuclear and Particle Physics
سال: 2011
ISSN: 0954-3899,1361-6471
DOI: 10.1088/0954-3899/38/12/124162