scholarly journals First physics results at the physical pion mass from Nf=2 Wilson twisted mass fermions at maximal twist

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

scholarly journals Pion structure from twisted mass lattice QCD down to the physical pion mass

2017 ◽  
Author(s):  
Bartosz Kostrzewa ◽  
Maximilian Oehm ◽  
Francesco Sanfilippo ◽  
Silvano Simula ◽  
Carsten Urbach
Keyword(s):  
Lattice Qcd ◽  
Pion Mass ◽  
Physical Pion ◽  
Twisted Mass ◽  
Pion Structure

scholarly journals Nucleon axial form factors using Nf=2 twisted mass fermions with a physical value of the pion mass

2017 ◽  
Vol 96 (5) ◽  
Author(s):  
C. Alexandrou ◽  
M. Constantinou ◽  
K. Hadjiyiannakou ◽  
K. Jansen ◽  
C. Kallidonis ◽  
...  
Keyword(s):  
Pion Mass ◽  
Form Factors ◽  
Twisted Mass ◽  
Axial Form

ON THE ROTATING SOLITON IN THE CHIRAL MODEL

1992 ◽  
Vol 07 (27) ◽  
pp. 6763-6772 ◽  
Author(s):  
TAKASHI OKAZAKI ◽  
KANJI FUJII ◽  
NAOHISA OGAWA
Keyword(s):  
Asymptotic Behavior ◽  
Trial Function ◽  
Pion Mass ◽  
Rotational Energy ◽  
Chiral Model ◽  
Profile Function ◽  
Physical Pion ◽  
Total Energies

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.

scholarly journals Nucleon structure from Lattice QCD using a nearly physical pion mass

2014 ◽  
Vol 734 ◽  
pp. 290-295 ◽  
Author(s):  
J.R. Green ◽  
M. Engelhardt ◽  
S. Krieg ◽  
J.W. Negele ◽  
A.V. Pochinsky ◽  
...  
Keyword(s):  
Lattice Qcd ◽  
Pion Mass ◽  
Nucleon Structure ◽  
Physical Pion

scholarly journals Lattice determination of I=0 and 2 ππ scattering phase shifts with a physical pion mass

2021 ◽  
Vol 104 (11) ◽  
Author(s):  
T. Blum ◽  
P. A. Boyle ◽  
M. Bruno ◽  
N. H. Christ ◽  
D. Hoying ◽  
...  
Keyword(s):  
Pion Mass ◽  
Phase Shifts ◽  
Physical Pion ◽  
Scattering Phase ◽  
Scattering Phase Shifts

scholarly journals D → π and D → K semileptonic form factors with Nf = 2 + 1 + 1 twisted mass fermions

2018 ◽  
Vol 175 ◽  
pp. 13026
Author(s):  
Vittorio Lubicz ◽  
Lorenzo Riggio ◽  
Giorgio Salerno ◽  
Silvano Simula ◽  
Cecilia Tarantino
Keyword(s):  
Pion Mass ◽  
Form Factors ◽  
Kinematical Region ◽  
Matrix Elements ◽  
Scalar Form ◽  
Mass Collaboration ◽  
Twisted Mass ◽  
The Matrix ◽  
Additional Form

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.

scholarly journals Lattice QCD study of the rare kaon decay K+→π+νν¯ at a near-physical pion mass

2019 ◽  
Vol 100 (11) ◽  
Author(s):  
Norman H. Christ ◽  
Xu Feng ◽  
Antonin Portelli ◽  
Christopher T. Sachrajda ◽  
Keyword(s):  
Lattice Qcd ◽  
Pion Mass ◽  
Kaon Decay ◽  
Physical Pion

scholarly journals Complete flavor decomposition of the spin and momentum fraction of the proton using lattice QCD simulations at physical pion mass

2020 ◽  
Vol 101 (9) ◽  
Author(s):  
C. Alexandrou ◽  
S. Bacchio ◽  
M. Constantinou ◽  
J. Finkenrath ◽  
K. Hadjiyiannakou ◽  
...  
Keyword(s):  
Lattice Qcd ◽  
Pion Mass ◽  
Momentum Fraction ◽  
Physical Pion
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