scholarly journals Factorization theorems, effective field theory, and nonleptonic heavy meson decays

1997 ◽  
Vol 56 (3) ◽  
pp. 1615-1631 ◽  
Author(s):  
Tsung-Wen Yeh ◽  
Hsiang-nan Li
Keyword(s):  
Field Theory ◽  
Effective Field Theory ◽  
Heavy Meson ◽  
Effective Field ◽  
Meson Decays

scholarly journals Heavy hybrids and tetraquarks in effective field theory

2019 ◽  
Vol 202 ◽  
pp. 01005 ◽  
Author(s):  
Jaume Tarrús Castellà
Keyword(s):  
Field Theory ◽  
Effective Field Theory ◽  
Bound States ◽  
Heavy Meson ◽  
Effective Field ◽  
Full Description ◽  
Wilson Loops ◽  
Inclusive Decays ◽  
Lattice Calculations

We report on an effective field theory (EFT) description of exotic quarkonia as bound states on the spectrum of hybrid and tetraquarks static energies. We provide expressions for hybrid and tetraquarks static energies in terms of Wilson loops. The former have been computed in quenched lattice calculations but the latter are yet unavailable. From the few simulations with dynamical light-quarks we argue that the overall picture from hybrid static energies does not change but additional states, such as heavy meson pairs, need to be considered for a full description. In this EFT framework for quarkonium hybrids, we report on recent results for mixing with standard quarkonium, spin-dependent contributions, and semi-inclusive decays.

scholarly journals HEAVY MESON MOLECULES IN EFFECTIVE FIELD THEORY

2007 ◽  
Author(s):  
MOHAMMAD T. ALFIKY ◽  
FABRIZIO GABBIANI ◽  
ALEXEY A. PETROV
Keyword(s):  
Field Theory ◽  
Effective Field Theory ◽  
Heavy Meson ◽  
Effective Field

scholarly journals HEAVY QUARK SYMMETRIES: MOLECULAR PARTNERS OF THE X(3872) AND $Z_{b}(10610)/Z_{b}'(10650)$

2014 ◽  
Vol 26 ◽  
pp. 1460073 ◽  
Author(s):  
FENG-KUN GUO ◽  
CARLOS HIDALGO-DUQUE ◽  
JUAN NIEVES ◽  
MANUEL PAVÓN VALDERRAMA
Keyword(s):  
Field Theory ◽  
Experimental Data ◽  
Heavy Quark ◽  
Effective Field Theory ◽  
Heavy Baryon ◽  
Heavy Meson ◽  
Effective Field ◽  
Quark Spin

In this work, we have used an Effective Field Theory (EFT) framework based on Heavy Quark Spin (HQSS), Heavy Flavour (HFS) and Heavy Antiquark-Diquark symmetries (HADS). Using a standard lagrangian for the heavy meson-heavy antimeson system, we fit the counter-terms of the model to predict some promising experimental data that can be interpreted as heavy meson-heavy antimeson molecules, that is, the X(3872) and the [Formula: see text]. Next, and, taking advantage of HADS, we use the same lagrangian to explore the consequences for heavy meson-doubly heavy baryon molecules, which can also be interpreted as triply heavy pentaquarks.

RECENT PROGRESS IN CHARMONIUM PHYSICS: ROLE OF HEAVY MESON LOOPS

2011 ◽  
Vol 26 (03n04) ◽  
pp. 353-358
Author(s):  
CHRISTOPH HANHART
Keyword(s):  
Field Theory ◽  
Effective Field Theory ◽  
Recent Progress ◽  
Heavy Meson ◽  
Effective Field ◽  
The Other ◽  
Inelastic Threshold ◽  
New States ◽  
Molecular Nature

In recent years a large number of new states in the charm sector was discovered above the first inelastic threshold that not at all match to the predictions of the quark model, which on the other hand was extremely successful below that threshold. Since most of those states are located close to a two–hadron threshold, many authors proposed a molecular nature for them. In this talk we will collect the evidences and discuss how the picture can be tested further. In addition, if hadron loops induce non-perturbative effects above the inelastic threshold, one should also expect them to have some impact on the properties of standard charmonia. In the last part of this write-up an effective field theory is introduced that allows one to investigate this issue systematically.

Effective Field Theory in Particle Physics and Cosmology

2020 ◽  
Keyword(s):  
Field Theory ◽  
Effective Field Theory ◽  
Particle Physics ◽  
Large Scale ◽  
Effective Field ◽  
Effective Theory ◽  
Soft Collinear Effective Theory ◽  
Multiple Length Scales ◽  
Cosmological Observations ◽  
Standard Models

Effective field theory (EFT) is a general method for describing quantum systems with multiple-length scales in a tractable fashion. It allows us to perform precise calculations in established models (such as the standard models of particle physics and cosmology), as well as to concisely parametrize possible effects from physics beyond the standard models. EFTs have become key tools in the theoretical analysis of particle physics experiments and cosmological observations, despite being absent from many textbooks. This volume aims to provide a comprehensive introduction to many of the EFTs in use today, and covers topics that include large-scale structure, WIMPs, dark matter, heavy quark effective theory, flavour physics, soft-collinear effective theory, and more.

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