Possible Evidence for a Negative Heavy Meson

1959 ◽  
Vol 3 (6) ◽  
pp. 283-284 ◽  
Author(s):  
T. Yamanouchi ◽  
M. F. Kaplon
Keyword(s):  
Heavy Meson

ϒand possible heavy-meson mass spectra

1978 ◽  
Vol 18 (1) ◽  
pp. 341-343
Author(s):  
Kohji Hirata ◽  
Tsunehiro Kobayashi ◽  
Nobuyuki Nakamaru
Keyword(s):  
Mass Spectra ◽  
Heavy Meson ◽  
Meson Mass

scholarly journals Heavy-meson decay constants from QCD sum rules

2010 ◽  
Author(s):  
Wolfgang Lucha ◽  
Dmitri Melikhov ◽  
Silvano Simula ◽  
Leonardo Angelini ◽  
Pietro Colangelo ◽  
...  
Keyword(s):  
Sum Rules ◽  
Heavy Meson ◽  
Meson Decay ◽  
Qcd Sum Rules ◽  
Decay Constants

Factorization and vector symmetry in heavy-meson decays

1994 ◽  
Vol 107 (6) ◽  
pp. 891-899
Author(s):  
F. Uchiyama
Keyword(s):  
Heavy Meson ◽  
Meson Decays

scholarly journals Quark-hadron duality for heavy meson mixings in the ’t Hooft model

2021 ◽  
Vol 2021 (9) ◽  
Author(s):  
Hiroyuki Umeeda
Keyword(s):  
Heavy Meson ◽  
Four Dimensions ◽  
Width Difference ◽  
Dimensional Spacetime ◽  
Gim Mechanism ◽  
Order Of Magnitude ◽  
Space Function ◽  
Inclusive Analysis ◽  
Phase Space Function ◽  
Hadron Duality

Abstract We study local quark-hadron duality and its violation for the $$ {D}^0-{\overline{D}}^0 $$ D 0 − D ¯ 0 , $$ {B}_d^0-{\overline{B}}_d^0 $$ B d 0 − B ¯ d 0 and $$ {B}_s^0-{\overline{B}}_s^0 $$ B s 0 − B ¯ s 0 mixings in the ’t Hooft model, offering a laboratory to test QCD in two-dimensional spacetime together with the large-Nc limit. With the ’t Hooft equation being numerically solved, the width difference is calculated as an exclusive sum over two-body decays. The obtained rate is compared to inclusive one that arises from four-quark operators to check the validity of the heavy quark expansion (HQE). In view of the observation in four-dimensions that the HQE prediction for the width difference in the $$ {D}^0-{\overline{D}}^0 $$ D 0 − D ¯ 0 mixing is four orders of magnitude smaller than the experimental data, in this work we investigate duality violation in the presence of the GIM mechanism. We show that the order of magnitude of the observable in the $$ {D}^0-{\overline{D}}^0 $$ D 0 − D ¯ 0 mixing is enhanced in the exclusive analysis relative to the inclusive counterpart, when the 4D-like phase space function is used for the inclusive analysis. By contrast, it is shown that for the $$ {B}_d^0-{\overline{B}}_d^0 $$ B d 0 − B ¯ d 0 and $$ {B}_s^0-{\overline{B}}_s^0 $$ B s 0 − B ¯ s 0 mixings, small yet non-negligible corrections to the inclusive result emerge, which are still consistent with what is currently indicated in four-dimensions.

scholarly journals Scaling behaviors of heavy flavor meson suppression and flow in different nuclear collision systems at the LHC

2021 ◽  
Vol 81 (11) ◽  
Author(s):  
Shu-Qing Li ◽  
Wen-Jing Xing ◽  
Xiang-Yu Wu ◽  
Shanshan Cao ◽  
Guang-You Qin
Keyword(s):  
Heavy Quark ◽  
Elliptic Flow ◽  
System Size ◽  
Heavy Ion ◽  
Heavy Meson ◽  
Jet Quenching ◽  
Flow Coefficient ◽  
Radiative Energy ◽  
Heavy Flavor ◽  
Radiative Energy Loss

AbstractWe explore the system size dependence of heavy-quark-QGP interaction by studying the heavy flavor meson suppression and elliptic flow in Pb–Pb, Xe–Xe, Ar–Ar and O–O collisions at the LHC. The space-time evolution of the QGP is simulated using a $$(3+1)$$ ( 3 + 1 ) -dimensional viscous hydrodynamic model, while the heavy-quark-QGP interaction is described by an improved Langevin approach that includes both collisional and radiative energy loss inside a thermal medium. Within this framework, we provides a reasonable description of the D meson suppression and flow coefficients in Pb–Pb collisions, as well as predictions for both D and B meson observables in other collision systems yet to be measured. We find a clear hierarchy for the heavy meson suppression with respect to the size of the colliding nuclei, while their elliptic flow coefficient relies on both the system size and the geometric anisotropy of the QGP. Sizable suppression and flow are predicted for both D and B mesons in O–O collisions, which serve as a crucial bridge of jet quenching between large and small collision systems. Scaling behaviors between different collision systems are shown for heavy meson suppression factor and the bulk-eccentricity-rescaled heavy meson elliptic flow as functions of the number of participant nucleons in heavy-ion collisions.

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