Journal of High Energy Physics, ISSN 1126-6708, 11/2018, Volume 2018, Issue 11, pp. 1 - 44

The lifetimes of bottom and charmed hadrons are analyzed within the framework of the heavy quark expansion (HQE). Lifetime differences arise from the spectator...

Perturbative QCD | Heavy Quark Physics | Quantum Physics | Quantum Field Theories, String Theory | Classical and Quantum Gravitation, Relativity Theory | Physics | Elementary Particles, Quantum Field Theory | POLE MASS | B-MESON LIFETIMES | CABIBBO-SUPPRESSED DECAYS | QUARK EXPANSION | 4-QUARK OPERATORS | INCLUSIVE DECAYS | EXCITED-STATES | DIFFERENCE | DISCARDING 1/N(C) | NONLEPTONIC WEAK DECAYS | PHYSICS, PARTICLES & FIELDS | Analysis | Quarks | Hadrons | Operators | Lifetime | Mesons | Interference | Sum rules | Charm (particle physics) | Quark models | Baryons

Perturbative QCD | Heavy Quark Physics | Quantum Physics | Quantum Field Theories, String Theory | Classical and Quantum Gravitation, Relativity Theory | Physics | Elementary Particles, Quantum Field Theory | POLE MASS | B-MESON LIFETIMES | CABIBBO-SUPPRESSED DECAYS | QUARK EXPANSION | 4-QUARK OPERATORS | INCLUSIVE DECAYS | EXCITED-STATES | DIFFERENCE | DISCARDING 1/N(C) | NONLEPTONIC WEAK DECAYS | PHYSICS, PARTICLES & FIELDS | Analysis | Quarks | Hadrons | Operators | Lifetime | Mesons | Interference | Sum rules | Charm (particle physics) | Quark models | Baryons

Journal Article

Journal of High Energy Physics, ISSN 1126-6708, 11/2013, Volume 2013, Issue 11, pp. 1 - 26

Discovering CP-violating effects in the Higgs sector would constitute an indisputable sign of physics beyond the Standard Model. We derive constraints on the...

Beyond Standard Model | CP violation | Quantum Physics | Quantum Field Theories, String Theory | Classical and Quantum Gravitation, Relativity Theory | Higgs Physics | Physics | Elementary Particles, Quantum Field Theory | Beyond standard model | Higgs physics | NEUTRON | ELECTRIC-DIPOLE MOMENT | LHC | QUARK | 4-QUARK OPERATORS | PROBES | STANDARD MODEL | QCD CORRECTIONS | BOSON-EXCHANGE | PHYSICS | PHYSICS, PARTICLES & FIELDS | Couplings | Couples | Fermions | Higgs bosons | Projection | Electric dipoles | Logarithms | Dipole moment

Beyond Standard Model | CP violation | Quantum Physics | Quantum Field Theories, String Theory | Classical and Quantum Gravitation, Relativity Theory | Higgs Physics | Physics | Elementary Particles, Quantum Field Theory | Beyond standard model | Higgs physics | NEUTRON | ELECTRIC-DIPOLE MOMENT | LHC | QUARK | 4-QUARK OPERATORS | PROBES | STANDARD MODEL | QCD CORRECTIONS | BOSON-EXCHANGE | PHYSICS | PHYSICS, PARTICLES & FIELDS | Couplings | Couples | Fermions | Higgs bosons | Projection | Electric dipoles | Logarithms | Dipole moment

Journal Article

Journal of High Energy Physics, ISSN 1126-6708, 12/2017, Volume 2017, Issue 12, pp. 1 - 38

The hadronic matrix elements of dimension-six ∆F = 0, 2 operators are crucial inputs for the theory predictions of mixing observables and lifetime ratios in...

Heavy Quark Physics | Quantum Physics | Quantum Field Theories, String Theory | Effective Field Theories | Classical and Quantum Gravitation, Relativity Theory | Physics | Nonperturbative Effects | Elementary Particles, Quantum Field Theory | RESONANCE PHYSICS | BEAUTY HADRONS | 4-QUARK OPERATORS | EFFECTIVE-FIELD-THEORY | INCLUSIVE DECAYS | MATHEMATICA PACKAGE | STANDARD MODEL | QCD CORRECTIONS | TO-LEADING-ORDER | QUARK MASS | PHYSICS, PARTICLES & FIELDS | Quarks | Accuracy | Uncertainty | Correlators | Sum rules | Computation | Phenomenology | High Energy Physics - Lattice | High Energy Physics - Phenomenology | High Energy Physics | Experiment | Nuclear and particle physics. Atomic energy. Radioactivity | Lattice

Heavy Quark Physics | Quantum Physics | Quantum Field Theories, String Theory | Effective Field Theories | Classical and Quantum Gravitation, Relativity Theory | Physics | Nonperturbative Effects | Elementary Particles, Quantum Field Theory | RESONANCE PHYSICS | BEAUTY HADRONS | 4-QUARK OPERATORS | EFFECTIVE-FIELD-THEORY | INCLUSIVE DECAYS | MATHEMATICA PACKAGE | STANDARD MODEL | QCD CORRECTIONS | TO-LEADING-ORDER | QUARK MASS | PHYSICS, PARTICLES & FIELDS | Quarks | Accuracy | Uncertainty | Correlators | Sum rules | Computation | Phenomenology | High Energy Physics - Lattice | High Energy Physics - Phenomenology | High Energy Physics | Experiment | Nuclear and particle physics. Atomic energy. Radioactivity | Lattice

Journal Article

Physical Review C - Nuclear Physics, ISSN 0556-2813, 08/2013, Volume 88, Issue 2

We present results for the one-loop anomalous dimension matrix of flavor nonsinglet twist-4 operators of lowest spin that contribute to the leading moment of...

DISTRIBUTIONS | NUCLEON | DEEP-INELASTIC-SCATTERING | FREE GAUGE-THEORIES | BEHAVIOR | ELECTRON-SCATTERING | LOCAL DUALITY | PHYSICS, NUCLEAR | RESONANCES | 4-QUARK OPERATORS | MOMENTS

DISTRIBUTIONS | NUCLEON | DEEP-INELASTIC-SCATTERING | FREE GAUGE-THEORIES | BEHAVIOR | ELECTRON-SCATTERING | LOCAL DUALITY | PHYSICS, NUCLEAR | RESONANCES | 4-QUARK OPERATORS | MOMENTS

Journal Article

JOURNAL OF HIGH ENERGY PHYSICS, ISSN 1029-8479, 09/2008, Issue 9

The determination of alpha(s) from hadronic tau decays is revisited, with a special emphasis on the question of higher-order perturbative corrections and...

ELECTROWEAK RADIATIVE-CORRECTIONS | renormalization regularization and renormalons | INFRARED RENORMALONS | 4-QUARK OPERATORS | DEEP-INELASTIC SCATTERING | STRONG-COUPLING CONSTANT | QCD | QUANTUM CHROMODYNAMICS | QCD CORRECTIONS | renormalization group | SUM-RULES | SPECTRAL FUNCTIONS | ANOMALOUS DIMENSIONS | PHYSICS, PARTICLES & FIELDS

ELECTROWEAK RADIATIVE-CORRECTIONS | renormalization regularization and renormalons | INFRARED RENORMALONS | 4-QUARK OPERATORS | DEEP-INELASTIC SCATTERING | STRONG-COUPLING CONSTANT | QCD | QUANTUM CHROMODYNAMICS | QCD CORRECTIONS | renormalization group | SUM-RULES | SPECTRAL FUNCTIONS | ANOMALOUS DIMENSIONS | PHYSICS, PARTICLES & FIELDS

Journal Article

Physical Review D - Particles, Fields, Gravitation and Cosmology, ISSN 1550-7998, 08/2013, Volume 88, Issue 3

Even if new data indicate that direct CP violation in D-meson decays is compatible with the standard model expectation, the first hints for direct CP violation...

POLE MASS | DIFFERENCE | SEARCH | ORDER QCD CORRECTIONS | ASTRONOMY & ASTROPHYSICS | WEAK DECAYS | PHYSICS | REGULARIZATION | SEMILEPTONIC-B | 4-QUARK OPERATORS | INCLUSIVE DECAYS | PHYSICS, PARTICLES & FIELDS | Physics - High Energy Physics - Phenomenology

POLE MASS | DIFFERENCE | SEARCH | ORDER QCD CORRECTIONS | ASTRONOMY & ASTROPHYSICS | WEAK DECAYS | PHYSICS | REGULARIZATION | SEMILEPTONIC-B | 4-QUARK OPERATORS | INCLUSIVE DECAYS | PHYSICS, PARTICLES & FIELDS | Physics - High Energy Physics - Phenomenology

Journal Article

Physical Review D - Particles, Fields, Gravitation and Cosmology, ISSN 0556-2821, 11/2004, Volume 70, Issue 9, pp. 1 - 94031

We present a calculation of subleading 1/m(b) corrections to spectator effects in the ratios of beauty hadron lifetimes in heavy-quark expansion. We find that...

QCD | DIFFERENCE | LOGARITHMS | ASTRONOMY & ASTROPHYSICS | BEAUTY HADRONS | TO-LEADING ORDER | LATTICE | 4-QUARK OPERATORS | INCLUSIVE DECAYS | MESON LIFETIMES | BARYON | PHYSICS, PARTICLES & FIELDS

QCD | DIFFERENCE | LOGARITHMS | ASTRONOMY & ASTROPHYSICS | BEAUTY HADRONS | TO-LEADING ORDER | LATTICE | 4-QUARK OPERATORS | INCLUSIVE DECAYS | MESON LIFETIMES | BARYON | PHYSICS, PARTICLES & FIELDS

Journal Article

Physical Review D, ISSN 0556-2821, 2003, Volume 67, Issue 9

We evaluate the renormalization factors of the domain-wall fermion system with various improved gauge actions at the one-loop level. The renormalization...

YANG-MILLS THEORY | ASTRONOMY & ASTROPHYSICS | IMPROVED LATTICE ACTION | CHIRAL FERMIONS | QUARKS | LIMIT | 4-QUARK OPERATORS | PHYSICS, PARTICLES & FIELDS | Physics - High Energy Physics - Lattice

YANG-MILLS THEORY | ASTRONOMY & ASTROPHYSICS | IMPROVED LATTICE ACTION | CHIRAL FERMIONS | QUARKS | LIMIT | 4-QUARK OPERATORS | PHYSICS, PARTICLES & FIELDS | Physics - High Energy Physics - Lattice

Journal Article

Nuclear Physics, Section B, ISSN 0550-3213, 2002, Volume 633, Issue 1, pp. 212 - 236

We compute the next-to-leading order QCD corrections to spectator effects in the lifetime ratios of beauty hadrons. With respect to previous calculations, we...

ANOMALOUS DIMENSION MATRIX | HEAVY-QUARK EXPANSION | REANALYSIS | WEAK NONLEPTONIC DECAYS | B-MESON LIFETIMES | 4-QUARK OPERATORS RELEVANT | 2-LOOP PROPAGATOR INTEGRALS | LATTICE | INCLUSIVE DECAYS | COUNTER-EXAMPLE | PHYSICS, PARTICLES & FIELDS

ANOMALOUS DIMENSION MATRIX | HEAVY-QUARK EXPANSION | REANALYSIS | WEAK NONLEPTONIC DECAYS | B-MESON LIFETIMES | 4-QUARK OPERATORS RELEVANT | 2-LOOP PROPAGATOR INTEGRALS | LATTICE | INCLUSIVE DECAYS | COUNTER-EXAMPLE | PHYSICS, PARTICLES & FIELDS

Journal Article

Physical Review D - Particles, Fields, Gravitation and Cosmology, ISSN 1550-7998, 01/2006, Volume 73, Issue 1

We perform a QCD sum rule calculation to determine the mass and the parity of the lowest lying pentaquark state. We include operators up to dimension d = 13 in...

NUCLEON | VACUUM | QUANTUM CHROMODYNAMICS | RESONANCE PHYSICS | INSTANTONS | ASTRONOMY & ASTROPHYSICS | EXOTICA | DIBARYON | PION | 4-QUARK STATES | PHYSICS, PARTICLES & FIELDS | Physics - High Energy Physics - Phenomenology

NUCLEON | VACUUM | QUANTUM CHROMODYNAMICS | RESONANCE PHYSICS | INSTANTONS | ASTRONOMY & ASTROPHYSICS | EXOTICA | DIBARYON | PION | 4-QUARK STATES | PHYSICS, PARTICLES & FIELDS | Physics - High Energy Physics - Phenomenology

Journal Article

11.
Full Text
Next-to-leading order QCD corrections to spectator effects in lifetimes of beauty hadrons

Nuclear Physics, Section B, ISSN 0550-3213, 2002, Volume 625, Issue 1, pp. 211 - 238

Theoretical predictions of beauty hadron lifetimes, based on the heavy quark expansion up to and including order 1/m , do not to reproduce the experimental...

ANOMALOUS DIMENSION MATRIX | STANDARD MODEL | REANALYSIS | WEAK NONLEPTONIC DECAYS | B-MESON LIFETIMES | 4-QUARK OPERATORS RELEVANT | EXPANSION | RATIO | INCLUSIVE DECAYS | COUNTER-EXAMPLE | PHYSICS, PARTICLES & FIELDS

ANOMALOUS DIMENSION MATRIX | STANDARD MODEL | REANALYSIS | WEAK NONLEPTONIC DECAYS | B-MESON LIFETIMES | 4-QUARK OPERATORS RELEVANT | EXPANSION | RATIO | INCLUSIVE DECAYS | COUNTER-EXAMPLE | PHYSICS, PARTICLES & FIELDS

Journal Article

PHYSICAL REVIEW D, ISSN 1550-7998, 03/2000, Volume 61, Issue 5

The Lambda(b) matrix element of the four-quark operator relevant to its lifetime is reanalyzed by the QCD sum rule method. The new ingredients introduced are...

B-MESON LIFETIMES | FORM-FACTORS | ASTRONOMY & ASTROPHYSICS | GLUON CONDENSATE | BEAUTY | HEAVY FLAVOR DECAYS | WEAK DECAYS | TO-LEADING ORDER | 4-QUARK OPERATORS | ALPHA(S) | SEMILEPTONIC DECAY | PHYSICS, PARTICLES & FIELDS

B-MESON LIFETIMES | FORM-FACTORS | ASTRONOMY & ASTROPHYSICS | GLUON CONDENSATE | BEAUTY | HEAVY FLAVOR DECAYS | WEAK DECAYS | TO-LEADING ORDER | 4-QUARK OPERATORS | ALPHA(S) | SEMILEPTONIC DECAY | PHYSICS, PARTICLES & FIELDS

Journal Article

INTERNATIONAL JOURNAL OF MODERN PHYSICS A, ISSN 0217-751X, 01/2001, Volume 16, Issue 2, pp. 285 - 302

Inclusive bottom hadron decays are analyzed based on the heavy quark effective field theory (HQEFT). Special attentions in this paper are paid to the b --> u...

DISTRIBUTIONS | B MESON LIFETIMES | B->C(C)OVER-BAR-S | QCD CORRECTIONS | PHYSICS, NUCLEAR | RADIATIVE-CORRECTIONS | SEMILEPTONIC BRANCHING RATIO | 4-QUARK OPERATORS | PHYSICS, PARTICLES & FIELDS

DISTRIBUTIONS | B MESON LIFETIMES | B->C(C)OVER-BAR-S | QCD CORRECTIONS | PHYSICS, NUCLEAR | RADIATIVE-CORRECTIONS | SEMILEPTONIC BRANCHING RATIO | 4-QUARK OPERATORS | PHYSICS, PARTICLES & FIELDS

Journal Article

Physics Letters B, ISSN 0370-2693, 1994, Volume 339, Issue 1, pp. 167 - 172

The infinite mass effective theory, when a heavy quark mass goes to infinity, and chiral perturbation theory at the quark level, based on the extended...

CURRENT-ALGEBRA APPROACH | JONA-LASINIO MODEL | HEAVY | FIELDS | LOCAL 4-QUARK OPERATORS | QUARK LEVEL | LIGHT | CHIRAL PERTURBATION-THEORY | MATRIX-ELEMENTS | PHYSICS

CURRENT-ALGEBRA APPROACH | JONA-LASINIO MODEL | HEAVY | FIELDS | LOCAL 4-QUARK OPERATORS | QUARK LEVEL | LIGHT | CHIRAL PERTURBATION-THEORY | MATRIX-ELEMENTS | PHYSICS

Journal Article

Nuclear Physics B (Proceedings Supplements), ISSN 0920-5632, 2001, Volume 94, Issue 1, pp. 337 - 341

Recent results relevant for the B-physics phenomenology, obtained from lattice QCD simulations by the APE Collaboration, are reviewed. This includes the B - B...

MESONS | FORM-FACTORS | SUBTRACTIONS | LIFETIME DIFFERENCE | 4-QUARK OPERATORS | RENORMALIZATION | PHYSICS, PARTICLES & FIELDS

MESONS | FORM-FACTORS | SUBTRACTIONS | LIFETIME DIFFERENCE | 4-QUARK OPERATORS | RENORMALIZATION | PHYSICS, PARTICLES & FIELDS

Journal Article

PHYSICS LETTERS B, ISSN 0370-2693, 11/2006, Volume 642, Issue 4, pp. 358 - 365

We perform a QCD sum rule analysis for the light scalar meson sigma (f(0)(600)) with a tetraquark current related to the instanton picture for QCD vacuum. We...

DECAY | OPE | QCD sum rule | PHYSICS, NUCLEAR | tetraquark | 4-QUARK STATES | scalar meson | QCD VACUUM | MULTIQUARK HADRONS | SCALAR MESONS | ASTRONOMY & ASTROPHYSICS | instanton | PHYSICS, PARTICLES & FIELDS

DECAY | OPE | QCD sum rule | PHYSICS, NUCLEAR | tetraquark | 4-QUARK STATES | scalar meson | QCD VACUUM | MULTIQUARK HADRONS | SCALAR MESONS | ASTRONOMY & ASTROPHYSICS | instanton | PHYSICS, PARTICLES & FIELDS

Journal Article

INTERNATIONAL JOURNAL OF MODERN PHYSICS A, ISSN 0217-751X, 12/2016, Volume 31, Issue 36

We present new compact integrated expressions of QCD spectral functions of heavy-light molecules and four-quark XY Z-like states at lowest order (LO) of...

0(++) HEAVY 4-QUARK | PI-PI | N-C QCD | MASS-SPLITTINGS | PHYSICS, NUCLEAR | perturbative and nonperturbative calculations | exotic mesons masses and decay constants | PRECISE FD(S),B(S) | QCD spectral sum rules | GLUON CONDENSATE | QUARK MASSES | DECAY CONSTANTS | CURRENT CORRELATORS | SYMMETRY-BREAKING | PHYSICS, PARTICLES & FIELDS

0(++) HEAVY 4-QUARK | PI-PI | N-C QCD | MASS-SPLITTINGS | PHYSICS, NUCLEAR | perturbative and nonperturbative calculations | exotic mesons masses and decay constants | PRECISE FD(S),B(S) | QCD spectral sum rules | GLUON CONDENSATE | QUARK MASSES | DECAY CONSTANTS | CURRENT CORRELATORS | SYMMETRY-BREAKING | PHYSICS, PARTICLES & FIELDS

Journal Article

INTERNATIONAL JOURNAL OF MODERN PHYSICS A, ISSN 0217-751X, 06/2018, Volume 33, Issue 16

We present new compact integrated expressions of SU3 breaking corrections to QCD spectral functions of heavy light molecules and four-quark XYZ-like states at...

0(++) HEAVY 4-QUARK | N-C QCD | POWER CORRECTIONS | PHYSICS, NUCLEAR | exotic mesons masses and decay constants | HADRONIC TAU-DECAY | QCD spectral sum rules | LIGHT-QUARK MASSES | QUANTUM CHROMODYNAMICS | perturbative and nonpertubative calculations | GLUON CONDENSATE | CHIRAL SYMMETRY-BREAKING | PERTURBATIVE QCD | CURRENT CORRELATORS | PHYSICS, PARTICLES & FIELDS

0(++) HEAVY 4-QUARK | N-C QCD | POWER CORRECTIONS | PHYSICS, NUCLEAR | exotic mesons masses and decay constants | HADRONIC TAU-DECAY | QCD spectral sum rules | LIGHT-QUARK MASSES | QUANTUM CHROMODYNAMICS | perturbative and nonpertubative calculations | GLUON CONDENSATE | CHIRAL SYMMETRY-BREAKING | PERTURBATIVE QCD | CURRENT CORRELATORS | PHYSICS, PARTICLES & FIELDS

Journal Article

PHYSICAL REVIEW D, ISSN 2470-0010, 03/2014, Volume 89, Issue 5

In this article, we distinguish the charge conjunctions of the interpolating currents, calculate the contributions of the vacuum condensates up to dimension 10...

SCALAR MESONS | ASTRONOMY & ASTROPHYSICS | CHARMONIUM | 4-QUARK STATES | PHYSICS, PARTICLES & FIELDS

SCALAR MESONS | ASTRONOMY & ASTROPHYSICS | CHARMONIUM | 4-QUARK STATES | PHYSICS, PARTICLES & FIELDS

Journal Article

20.
Full Text
Perturbative O (αs) corrections to the correlation functions of light tetraquark currents

Physical Review D - Particles, Fields, Gravitation and Cosmology, ISSN 1550-7998, 09/2014, Volume 90, Issue 5

We calculate the next-to-leading-order QCD corrections to the perturbative term in the operator product expansion of the spectral functions of light tetraquark...

SUNSET-TYPE DIAGRAMS | CONFIGURATION-SPACE | ORDER | MULTIQUARK HADRONS | DECAY | INTEGRATION | SCALAR MESONS | FEYNMAN DIAGRAMS | ASTRONOMY & ASTROPHYSICS | QCD SUM-RULES | 4-QUARK STATES | PHYSICS, PARTICLES & FIELDS

SUNSET-TYPE DIAGRAMS | CONFIGURATION-SPACE | ORDER | MULTIQUARK HADRONS | DECAY | INTEGRATION | SCALAR MESONS | FEYNMAN DIAGRAMS | ASTRONOMY & ASTROPHYSICS | QCD SUM-RULES | 4-QUARK STATES | PHYSICS, PARTICLES & FIELDS

Journal Article

No results were found for your search.

Cannot display more than 1000 results, please narrow the terms of your search.