TY - JOUR
T1 - Bayesian approach to the first excited nucleon state in lattice QCD
AU - Sasaki, S.
AU - Sasaki, K.
AU - Hatsuda, T.
AU - Asakawa, M.
N1 - Funding Information:
We are interested in a long standing puzzle regarding the excited state spectrum of the nucleon, namely, the level order of the positive-parity excited nucleon N’( 1440) and the negative-parity *This work is supported by the Supercomputer Project No.85 (FY2002) of High Energy Accelerator Research Organization (KEK). S.S. thanks for the support by JSPS Grand-in-Aid for Encouragement of Young Scientists (No.13740146).
PY - 2003/5
Y1 - 2003/5
N2 - We present preliminary results from the first attempt to reconstruct the spectral function in the nucleon and Δ channels from lattice QCD data using the maximum entropy method (MEM). An advantage of the MEM analysis is to enable us to access information of the excited state spectrum. Performing simulations on two lattice volumes, we confirm the large finite size effect on the first excited nucleon state in the lighter quark mass region.
AB - We present preliminary results from the first attempt to reconstruct the spectral function in the nucleon and Δ channels from lattice QCD data using the maximum entropy method (MEM). An advantage of the MEM analysis is to enable us to access information of the excited state spectrum. Performing simulations on two lattice volumes, we confirm the large finite size effect on the first excited nucleon state in the lighter quark mass region.
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U2 - 10.1016/S0920-5632(03)01545-7
DO - 10.1016/S0920-5632(03)01545-7
M3 - Article
AN - SCOPUS:0037949019
VL - 119
SP - 302
EP - 304
JO - Nuclear and Particle Physics Proceedings
JF - Nuclear and Particle Physics Proceedings
SN - 2405-6014
ER -