Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1995-08-15
Nucl.Phys.A596:415-424,1996
Physics
High Energy Physics
High Energy Physics - Phenomenology
13 pages, RevTex is used. 3 figures as uufiles are included
Scientific paper
10.1016/0375-9474(95)00404-1
The scalar form factor of the nucleon and related physical quantities are investigated in the framework of the semibosonized SU(3) Nambu-Jona-Lasinio soliton model. We take into account the rotational $1/N_c$ corrections and linear $m_s$ corrections. The strangeness content of the nucleon in the scalar form factor is discussed in detail. In particular, it is found that the $m_s$ corrections play an essential role of reducing the $\langle N | \bar{s} s | N \rangle$ arising from the leading order and rotational $1/N_c$ contributions. We obtain the $\sigma_{\pi N} (0)=40.80\;\mbox{MeV}$, $\Delta \sigma = \sigma_{\pi N} (2m^{2}_{\pi})-\sigma_{\pi N} (0) = 18.18\;\mbox{MeV}$ and $\langle r^2\rangle^{S}_{N} = 1.50\;\mbox{fm}^2$. The results are in a remarkable agreement with empirical data analyzed by Gasser, Leutwyler, and Sainio~\cite{gls}.
Blotz Andree
Goeke Klaus
Kim Hyun-Chul
Schneider Carsten
No associations
LandOfFree
Strangeness in the Scalar Form Factor of the Nucleon does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Strangeness in the Scalar Form Factor of the Nucleon, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Strangeness in the Scalar Form Factor of the Nucleon will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-24188