PQCD study of the [Formula Presented] and [Formula Presented] controversy in inclusive [Formula Presented] decays

Chia Hung V. Chang; We Fu Chang

doi:10.1103/PhysRevD.58.094019

PQCD study of the [Formula Presented] and [Formula Presented] controversy in inclusive [Formula Presented] decays

Chia Hung V. Chang
, We Fu Chang

Research output: Contribution to journal › Article › peer-review

Abstract

We calculate the semileptonic branching fraction and charm yield from inclusive (Formula presented) decays using the formalism of perturbative QCD. For nonleptonic decays, we employ the modified factorization theorem, in which Wilson coefficients evolve with the characteristic scales of the decay modes. It is found that the decay rate of the single-charm mode (Formula presented) is enhanced, and a lower (Formula presented) is obtained without increasing (Formula presented) This conclusion differs from the usual one, where the (Formula presented) mode is increased. Our result for the (Formula presented) meson lifetime is also consistent with the data.

Original language	English
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	58
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevD.58.094019
Publication status	Published - 1998 Sept 30
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)

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10.1103/PhysRevD.58.094019

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title = "PQCD study of the [Formula Presented] and [Formula Presented] controversy in inclusive [Formula Presented] decays",

abstract = "We calculate the semileptonic branching fraction and charm yield from inclusive (Formula presented) decays using the formalism of perturbative QCD. For nonleptonic decays, we employ the modified factorization theorem, in which Wilson coefficients evolve with the characteristic scales of the decay modes. It is found that the decay rate of the single-charm mode (Formula presented) is enhanced, and a lower (Formula presented) is obtained without increasing (Formula presented) This conclusion differs from the usual one, where the (Formula presented) mode is increased. Our result for the (Formula presented) meson lifetime is also consistent with the data.",

author = "Chang, \{Chia Hung V.\} and Chang, \{We Fu\}",

year = "1998",

month = sep,

day = "30",

doi = "10.1103/PhysRevD.58.094019",

language = "English",

volume = "58",

journal = "Physical Review D - Particles, Fields, Gravitation and Cosmology",

issn = "1550-7998",

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T1 - PQCD study of the [Formula Presented] and [Formula Presented] controversy in inclusive [Formula Presented] decays

AU - Chang, Chia Hung V.

AU - Chang, We Fu

PY - 1998/9/30

Y1 - 1998/9/30

N2 - We calculate the semileptonic branching fraction and charm yield from inclusive (Formula presented) decays using the formalism of perturbative QCD. For nonleptonic decays, we employ the modified factorization theorem, in which Wilson coefficients evolve with the characteristic scales of the decay modes. It is found that the decay rate of the single-charm mode (Formula presented) is enhanced, and a lower (Formula presented) is obtained without increasing (Formula presented) This conclusion differs from the usual one, where the (Formula presented) mode is increased. Our result for the (Formula presented) meson lifetime is also consistent with the data.

AB - We calculate the semileptonic branching fraction and charm yield from inclusive (Formula presented) decays using the formalism of perturbative QCD. For nonleptonic decays, we employ the modified factorization theorem, in which Wilson coefficients evolve with the characteristic scales of the decay modes. It is found that the decay rate of the single-charm mode (Formula presented) is enhanced, and a lower (Formula presented) is obtained without increasing (Formula presented) This conclusion differs from the usual one, where the (Formula presented) mode is increased. Our result for the (Formula presented) meson lifetime is also consistent with the data.

UR - https://www.scopus.com/pages/publications/85038891412

UR - https://www.scopus.com/pages/publications/85038891412#tab=citedBy

U2 - 10.1103/PhysRevD.58.094019

DO - 10.1103/PhysRevD.58.094019

M3 - Article

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SN - 1550-7998

VL - 58

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

IS - 9

ER -

PQCD study of the [Formula Presented] and [Formula Presented] controversy in inclusive [Formula Presented] decays

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