scholarly journals Low-lying baryon masses using Nf=2 twisted mass clover-improved fermions directly at the physical pion mass

2017 ◽  
Vol 96 (3) ◽  
Author(s):  
C. Alexandrou ◽  
C. Kallidonis
Keyword(s):  
2017 ◽  
Author(s):  
Bartosz Kostrzewa ◽  
Maximilian Oehm ◽  
Francesco Sanfilippo ◽  
Silvano Simula ◽  
Carsten Urbach

2017 ◽  
Vol 95 (9) ◽  
Author(s):  
A. Abdel-Rehim ◽  
C. Alexandrou ◽  
F. Burger ◽  
M. Constantinou ◽  
P. Dimopoulos ◽  
...  
Keyword(s):  

2017 ◽  
Vol 96 (5) ◽  
Author(s):  
C. Alexandrou ◽  
M. Constantinou ◽  
K. Hadjiyiannakou ◽  
K. Jansen ◽  
C. Kallidonis ◽  
...  

1992 ◽  
Vol 07 (27) ◽  
pp. 6763-6772 ◽  
Author(s):  
TAKASHI OKAZAKI ◽  
KANJI FUJII ◽  
NAOHISA OGAWA

We study the quantum rotating soliton in the nonlinear σ model which is obtained by minimizing the total energies of rotating soliton. Existence of such a soliton is expected from the Derrick’s theorem even when the Skyrme term is absent because the rotational energy prevents the soliton from collapsing. The asymptotic behavior of the profile function is shown to be determined by the physical pion mass which appears in the PCAC relation in the nonlinear σ model. The energies of spin-1/2 and − 3/2 solitons are obtained numerically with the use of a simple trial function.


2014 ◽  
Vol 734 ◽  
pp. 290-295 ◽  
Author(s):  
J.R. Green ◽  
M. Engelhardt ◽  
S. Krieg ◽  
J.W. Negele ◽  
A.V. Pochinsky ◽  
...  

2021 ◽  
Vol 104 (11) ◽  
Author(s):  
T. Blum ◽  
P. A. Boyle ◽  
M. Bruno ◽  
N. H. Christ ◽  
D. Hoying ◽  
...  

2018 ◽  
Vol 175 ◽  
pp. 13026
Author(s):  
Vittorio Lubicz ◽  
Lorenzo Riggio ◽  
Giorgio Salerno ◽  
Silvano Simula ◽  
Cecilia Tarantino

We present a lattice determination of the vector and scalar form factors of the D → π(K)lv semileptonic decays, which are relevant for the extraction of the CKM matrix elements |Vcd| and |Vcs| from experimental data. Our analysis is based on the gauge configurations produced by the European Twisted Mass Collaboration with Nf = 2 + 1 +1 flavors of dynamical quarks. We simulated at three different values of the lattice spacing and with pion masses as small as 210 MeV. The matrix elements of both vector and scalar currents are determined for a plenty of kinematical conditions in which parent and child mesons are either moving or at rest. Lorentz symmetry breaking due to hypercubic effects is clearly observed in the data and included in the decomposition of the current matrix elements in terms of additional form factors. After the extrapolations to the physical pion mass and to the continuum limit the vector and scalar form factors are determined in the whole kinematical region from q2 = 0 up to [see formula in PDF] accessible in the experiments, obtaining a good overall agreement with experiments, except in the region at high values of q2 where some deviations are visible.


2019 ◽  
Vol 100 (11) ◽  
Author(s):  
Norman H. Christ ◽  
Xu Feng ◽  
Antonin Portelli ◽  
Christopher T. Sachrajda ◽  

2020 ◽  
Vol 101 (9) ◽  
Author(s):  
C. Alexandrou ◽  
S. Bacchio ◽  
M. Constantinou ◽  
J. Finkenrath ◽  
K. Hadjiyiannakou ◽  
...  

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