Published 2016 | Version v1
Journal article Metadata-only

Higher-twist effects in the B → π transition form factor from QCD light-cone sum rules

Creators

  • 1. Universitaet Siegen (Germany). Fakultaet IV, Department Physik, Theoretische Physik 1 Walter-Flex-Strasse 3 57068 Siegen

Description

I report on the progress in calculating new higher-twist corrections to the QCD light-cone sum rule for the B → π transition form factor. First, the expansion of the massive heavy-quark propagator in the external gluonic field near the light-cone was extended to include new terms containing the gluon-field strength derivatives. The resulting analytical expressions for the twist-5 and twist-6 contributions to the correlation function were obtained in a factorized approximation, expressed via the product of the quark-condensate density and the lower-twist pion distribution amplitudes. The numerical analysis of new higher-twist effects is in progress.

Additional details

Identifiers

URL
http://www.dpg-verhandlungen.de;

Publishing Information

Journal Title
Verhandlungen der Deutschen Physikalischen Gesellschaft
Journal Issue
Hamburg 2016 issue
Series
Also available as printed version: Verhandlungen der Deutschen Physikalischen Gesellschaft v. 51(2)
Journal Page Range
[1 p.]
ISSN
0420-0195
CODEN
VDPEAZ

Conference

Title
DPG-Fruehjahrstagung 2016 (Spring meeting) of the section matter and cosmos (SMuK) together with the divisions gravity and relativity, radiation and medical physics, particle physics, theoretical and mathematical physics, and the working group philosophy of physics
Original Conference Title
DPG-Fruehjahrstagung 2016 der Sektion Materie und Kosmos (SMuK) gemeinsam mit den Fachverbaenden Gravitation und Relativitaetstheorie, Strahlen- und Medizinphysik, Teilchenphysik, Theoretische und Mathematische Grundlagen der Physik sowie der Arbeitsgruppe Philosophie der Physik
Dates
29 Feb - 4 Mar 2016
Place
Hamburg (Germany)

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
48010192
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ANALYTIC FUNCTIONS; B MESONS; B QUARKS; CORRECTIONS; CORRELATION FUNCTIONS; DISTRIBUTION FUNCTIONS; FACTORIZATION; FLAVOR MODEL; FORM FACTORS; LIGHT CONE; PARTICLE STRUCTURE; PERTURBATION THEORY; PROPAGATOR; QUANTUM CHROMODYNAMICS; QUARK CONDENSATION; REST MASS; SERIES EXPANSION; SUM RULES; VECTOR FIELDS; WEAK PARTICLE DECAY
Descriptors DEC
BEAUTY MESONS; BEAUTY PARTICLES; BOSONS; COMPOSITE MODELS; DECAY; DIMENSIONLESS NUMBERS; ELEMENTARY PARTICLES; EQUATIONS; FERMIONS; FIELD THEORIES; FUNCTIONS; HADRONS; MASS; MATHEMATICAL MODELS; MESONS; PARTICLE DECAY; PARTICLE MODELS; PARTICLE PROPERTIES; PSEUDOSCALAR MESONS; QUANTUM FIELD THEORY; QUARK MODEL; QUARKS; SPACE-TIME

Optional Information

Notes
Session: T 32.5 Mo 17:45; No further information available