Publications (16)
On the Chiral Quark Soliton Model with Pauli-Villars Regularization
T. Kubota, M. Wakamatsu, T. Watabe
The Pauli-Villars regularization scheme is often used for evaluating parton distributions within the framework of the chiral quark soliton model with inclusion of the vacuum polari…
Flavor asymmetry of polarized and unpolarized sea quark distributions in the large-N_c limit
B. Dressler, K. Goeke, P. V. Pobylitsa +3
We summarize recent attempts to calculate the flavor asymmetry of the nucleon's sea quark distributions in the large- limit, where the nucleon can be described as a soliton of…
Observation of a Be double-Lambda hypernucleus in the J-PARC E07 experiment
H. Ekawa, K. Agari, J. K. Ahn +100
A double- hypernucleus, , was observed by the J-PARC E07 collaboration in nuclear emulsions tagged by the reaction. This event was interpr…
The electroproduction of the (1232) in the chiral quark-soliton model
A. Silva, D. Urbano, T. Watabe +2
We calculate the ratios E2/M1 and C2/M1 for the electroproduction of the (1232) in the region of photon virtuality GeV. The magnetic dipole amplitude M1 is also…
Meausurement of Sky Suface Brightness Fluctuations at lambda = 4 micron
J. Xu, J. J. Bock, K. M. Ganga +6
We present a Monte-Carlo technique to probe the cosmic Infrared background radiation (CIB) with faint source confusion in deep, wide-field 4 micron images. We report a detection of…
The Infrared Astronomical Mission AKARI
H. Murakami, H. Baba, P. Barthel +90
AKARI, the first Japanese satellite dedicated to infrared astronomy, was launched on 2006 February 21, and started observations in May of the same year. AKARI has a 68.5 cm cooled…
Observation of Coulomb-assisted nuclear bound state of -N system
S. H. Hayakawa, K. Agari, J. K. Ahn +95
In an emulsion-counter hybrid experiment performed at J-PARC, a absorption event was observed which decayed into twin single- hypernuclei. Kinematic calculations enabled…
Isovector unpolarized quark distribution in the nucleon in the large-N_c limit
P. V. Pobylitsa, M. V. Polyakov, K. Goeke +2
We calculate the isovector (flavor-nonsinglet) unpolarized quark- and antiquark distributions in the nucleon at a low normalization point in the large-N_c limit. The nucleon is des…
Symmetry conserving approach to the quantization of the non-topological SU(3) soliton
M. Praszalowicz, T. Watabe, K. Goeke
We reconsider canonical quantization of the rotating soliton in the SU(3) Chiral Quark-Soliton Model. We show that at the level of 1/N_c, in contrast to the SU(2) version of the mo…
Baryons as non-topological chiral solitons
Chr. V. Christov, A. Blotz, H. -C. Kim +5
The present review gives a survey of recent developments and applications of the Nambu--Jona-Lasinio model with and quark flavors for the structure of baryons. The…
Axial form factor in the chiral quark soliton model
T. Watabe, Chr. V. Christov, K. Goeke
We calculate the axial form factor in the chiral quark soliton (semibosonized Nambu - Jona-Lasinio) model using the semiclassical quantization scheme in the next to leading order i…
Rotational Corrections to and Isovector Magnetic Moment of the Nucleon
Chr. V. Christov, K. Goeke, P. Pobilitsa +3
The rotational corrections to the axial vector constant and the isovector magnetic moment of the nucleon are studied in the Nambu -- Jona-Lasinio model. We follow a semicla…
Spin and Orbital Angular Momentum Distribution Functions of the Nucleon
M. Wakamatsu, T. Watabe
A theoretical prediction is given for the spin and orbital angular momentum distribution functions of the nucleon within the framework of an effective quark model of QCD, i.e. the…
A Search for Near-Infrared Emission From the Halo of NGC 5907 at Radii of 10 kpc to 30 kpc
S. A. Yost, J. J. Bock, M. Kawada +5
We present a search for near-infrared (3.5-5 micron) emission from baryonic dark matter in the form of low-mass stars and/or brown dwarfs in the halo of the nearby edge-on spiral g…
Ratio for the Transition in the Chiral Quark Soliton Model
T. Watabe, Chr. V. Christov, K. Goeke
We calculate the electric quadrupole to magnetic dipole transition ratio for the reaction $γN \ra Î(1232)$ in the chiral quark soliton model. The calculated ratio…
Do we expect light flavor sea-quark asymmetry also for the spin-dependent distribution functions of the nucleon?
M. Wakamatsu, T. Watabe
After taking account of the scale dependence by means of the standard DGLAP evolution equation, the theoretical predictions of the chiral quark soliton model for the unpolarized an…