scholarly journals Entanglement and the factorization-approximation

2001 ◽  
Vol 17 (3) ◽  
pp. 385-393 ◽  
Author(s):  
J. Gemmer ◽  
G. Mahler
Keyword(s):  
Factorization Approximation

TWO-BODY NONLEPTONIC Λb DECAYS WITH 1/mQ CORRECTIONS

1998 ◽  
Vol 13 (01) ◽  
pp. 23-32 ◽  
Author(s):  
A. K. GIRI ◽  
L. MAHARANA ◽  
R. MOHANTA
Keyword(s):  
Bound State ◽  
Factorization Approximation ◽  
Upper Limit

The two-body nonleptonic Λb decays are considered in the HQET with 1/mQ corrections and factorization approximation. The Isgur–Wise function is evaluated in the bound state soliton picture. The results obtained remain well below their previously predicted upper limit.

On the factorization approximation of the statistical operator

1985 ◽  
Vol 44 (1) ◽  
pp. 58-60
Author(s):  
L. Cianchi ◽  
P. Moretti
Keyword(s):  
Factorization Approximation ◽  
Statistical Operator

scholarly journals RESONANCES AND WEAK INTERACTIONS IN D+→ π+π−π+ DECAYS

2007 ◽  
Vol 16 (09) ◽  
pp. 2876-2879 ◽  
Author(s):  
DIOGO R. BOITO ◽  
BRUNO EL-BENNICH ◽  
BENOÎT LOISEAU ◽  
OLIVIER LEITNER
Keyword(s):  
Weak Interactions ◽  
Decay Amplitude ◽  
D Meson ◽  
Final State ◽  
Meson Decays ◽  
Factorization Approximation ◽  
Weak Part ◽  
Unitary Model ◽  
Final State Interactions ◽  
Three Body

We describe the ππS-wave in D+→ π+π−π+ decays using a unitary model for the ππ Final State Interactions (FSI). The three body decay is treated as a quasi two-body process where, at the weak vertex, the D meson decays into a resonance and a pion. The weak part of the decay amplitude is evaluated using the effective weak Hamiltonian within the factorization approximation.

scholarly journals Two-current correlations in the pion in the Nambu and Jona-Lasinio model

2020 ◽  
Vol 80 (10) ◽  
Author(s):  
Aurore Courtoy ◽  
Santiago Noguera ◽  
Sergio Scopetta
Keyword(s):  
High Energy ◽  
Low Energy ◽  
Matrix Elements ◽  
Lattice Data ◽  
Energy Matrix ◽  
Parton Distributions ◽  
Factorization Approximation ◽  
Lattice Result ◽  
Villars Regularization ◽  
Current Correlations

AbstractWe present an analysis of two-current correlations for the pion in the Nambu–Jona-Lasinio model, with Pauli–Villars regularization. We provide explicit expressions in momentum space for two-current correlations corresponding to the zeroth component of the vector Dirac bilinear in the quark vertices, which has been evaluated on the lattice, thinking to applications in a high energy framework, as a step towards the calculation of pion double parton distributions. The numerical results show a remarkable qualitative agreement with recent lattice data. The factorization approximation into one-body currents is discussed based on previous evaluation of the relevant low energy matrix elements in the Nambu–Jona-Lasinio model, confirming the lattice result.

The factorization approximation for the Master Equation

2004 ◽  
Vol 313 (1) ◽  
pp. 72-109 ◽  
Author(s):  
Hashem Zoubi ◽  
Meir Orenstien ◽  
Amiram Ron
Keyword(s):  
Master Equation ◽  
Factorization Approximation

Boson factorization approximation for anharmonic nuclear vibrations

1976 ◽  
Vol 62 (1) ◽  
pp. 5-8 ◽  
Author(s):  
E.R. Marshalek
Keyword(s):  
Factorization Approximation

scholarly journals Charmonium contribution to $B \to K l^+l^-$: testing the factorization approximation on the lattice

2020 ◽  
Author(s):  
Katsumasa Nakayama ◽  
Tsutomu Ishikawa ◽  
Shoji Hashimoto ◽  
Keyword(s):  
Factorization Approximation

scholarly journals Does vacuum saturation work for the higher-dimensional vacuum condensates in the QCD sum rules?

2021 ◽  
Author(s):  
Zhi-Gang Wang
Keyword(s):  
Operator Product Expansion ◽  
Sum Rules ◽  
Operator Product ◽  
Qcd Sum Rules ◽  
Text Type ◽  
Factorization Approximation ◽  
Vacuum Saturation ◽  
Higher Dimensional ◽  
Vacuum Condensates ◽  
Saturation Approximation

In the QCD sum rules for the tetraquark (molecular) states, the higher-dimensional vacuum condensates play an important role in extracting the tetraquark masses. We carry out the operator product expansion up to the vacuum condensates of dimension-10 and observe that the vacuum condensates of dimensions 6, 8 and 10 have the same expressions but opposite signs for the [Formula: see text]-type and [Formula: see text]-type four-quark currents, which make their influences distinguishable, and they are excellent channels to examine the vacuum saturation approximation. We introduce a parameter [Formula: see text] to parametrize the derivation from the vacuum saturation or factorization approximation, and choose two sets of parameters to examine the influences on the predicted tetraquark masses, which can be confronted to the experimental data in the future. In all the channels, smaller value of the [Formula: see text] leads to better convergent behavior in the operator product expansion, which favors the vacuum saturation approximation.

scholarly journals Remarks on (1−q) expansion and factorization approximation in the Tsallis nonextensive statistical mechanics

2001 ◽  
Vol 289 (1-2) ◽  
pp. 44-50 ◽  
Author(s):  
E.K. Lenzi ◽  
R.S. Mendes ◽  
L.R. da Silva ◽  
L.C. Malacarne
Keyword(s):  
Statistical Mechanics ◽  
Nonextensive Statistical Mechanics ◽  
Factorization Approximation
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