Zobrazeno 1 - 10
of 325
pro vyhledávání: '"Papinutto, M"'
The present paper is the second installment, where we compute the generating functional of correlators of collinear twist-$2$ operators that enter the components of unbalanced superfields -- i.e., superfields with an unequal number of dotted and undo
Externí odkaz:
http://arxiv.org/abs/2405.02469
Publikováno v:
PoS(LATTICE2014)106
The recent confirmation of the charged charmonium like resonance Z(4430) by the LHCb experiment strongly suggests the existence of QCD multi quarks bound states. Some preliminary results about hypothetical flavored tetraquark mesons are reported. Suc
Externí odkaz:
http://arxiv.org/abs/1411.2247
We attempt a description of the recently discovered Z_{c,b} states in terms of Feshbach resonances arising from the interaction between the `closed' subspace of hadrocharmonium levels and the `open' one of open-charm/beauty thresholds. We show how th
Externí odkaz:
http://arxiv.org/abs/1311.7374
Publikováno v:
PoS(LATTICE 2013)317
We determine a basis of dimension-7 operators which arise at O($a$) in the Symanzik expansion of the $\Delta B=2$ operators with static heavy quarks. We consider both Wilson-like and Ginsparg-Wilson light quarks. Exact chiral symmetry reduces the num
Externí odkaz:
http://arxiv.org/abs/1311.5177
Publikováno v:
Phys. Rev. D 88, 054029 (2013)
The phenomenology of the so-called X, Y and Z hadronic resonances is hard to reconcile with standard charmonium or bottomonium interpretations. It has been suggested that some of these new hadrons can possibly be described as tightly bound tetraquark
Externí odkaz:
http://arxiv.org/abs/1307.2873
Autor:
Carrasco, N., Dimopoulos, P., Frezzotti, R., Gimenez, V., Herdoiza, G., Lubicz, V., Martinelli, G., Palao, D., Papinutto, M., Rossi, G. C., Sanfilippo, F., Shindler, A., Simula, S., Tarantino, C.
We present the ETMC results for the bag parameters describing the neutral kaon mixing in the Standard Model and beyond and preliminary results for the bag parameters controlling the short distance contributions in the D^0-\bar{D}^0 oscillations. We a
Externí odkaz:
http://arxiv.org/abs/1211.0565
Autor:
Bertone, V., Carrasco, N., Ciuchini, M., Dimopoulos, P., Frezzotti, R., Gimenez, V., Lubicz, V., Martinelli, G., Mescia, F., Papinutto, M., Rossi, G. C., Silvestrini, L., Simula, S., Tarantino, C., Vladikas, A.
We present the first unquenched, continuum limit, lattice QCD results for the matrix elements of the operators describing neutral kaon oscillations in extensions of the Standard Model. Owing to the accuracy of our calculation on \Delta S=2 weak Hamil
Externí odkaz:
http://arxiv.org/abs/1207.1287
The masses of the low-lying strange and charm baryons are evaluated using two degenerate flavors of twisted mass sea quarks for pion masses in the range of about 260 MeV to 450 MeV. The strange and charm valence quark masses are tuned to reproduce th
Externí odkaz:
http://arxiv.org/abs/1205.6856
Autor:
Alexandrou, C., Brinet, M., Carbonell, J., Constantinou, M., Guichon, P., Harraud, P. A., Jansen, K., Kallidonis, C., Korzec, T., Papinutto, M.
We present results on the electroweak form factors and on the lower moments of parton distributions of the nucleon, within lattice QCD using two dynamical flavors of degenerate twisted mass fermions. Results are obtained on lattices with three differ
Externí odkaz:
http://arxiv.org/abs/1201.0021
Autor:
Carrasco, N., Gimenez, V., Dimopoulos, P., Frezzotti, R., Palao, D., Rossi, G. C., Lubicz, V., Papinutto, M., Sanfilippo, F., Simula, S.
We present preliminary results at {\beta} = 1.95 (a = 0.077 fm) on the first unquenched N_f=2+1+1 lattice computation of the B_K parameter which controls the neutral kaon oscillations in the Standard Model. Using N_f=2+1+1 maximally twisted sea quark
Externí odkaz:
http://arxiv.org/abs/1111.1262