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Volume 107 (2003)
- Issue 6 Pages 19-
- Issue 5 Pages Cover1-
- Issue 4 Pages 1-
- Issue 3 Pages Cover1-
- Issue 2 Pages Cover1-
- Issue 1 Pages Cover1-
Volume 107, Issue 2
Displaying 1-27 of 27 articles from this issue
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Article type: Cover
2003 Volume 107 Issue 2 Pages Cover1-
Published: May 20, 2003
Released on J-STAGE: October 02, 2017
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Article type: Appendix
2003 Volume 107 Issue 2 Pages App1-
Published: May 20, 2003
Released on J-STAGE: October 02, 2017
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Article type: Appendix
2003 Volume 107 Issue 2 Pages B1-B2
Published: May 20, 2003
Released on J-STAGE: October 02, 2017
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N. OkamuraArticle type: Article
2003 Volume 107 Issue 2 Pages B3-B4
Published: May 20, 2003
Released on J-STAGE: October 02, 2017
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Takaaki KajitaArticle type: Article
2003 Volume 107 Issue 2 Pages B5-B14
Published: May 20, 2003
Released on J-STAGE: October 02, 2017
JOURNAL FREE ACCESSDuring the last several years, the understanding of the neutrino masses and mixings has been improved significantly. In this article, we discuss the status of neutrino oscillation experiments. Prospects of future neutrino oscillation experiments are also discussed.View full abstractDownload PDF (789K) -
Koichi HamaguchiArticle type: Article
2003 Volume 107 Issue 2 Pages B15-B20
Published: May 20, 2003
Released on J-STAGE: October 02, 2017
JOURNAL FREE ACCESSIn this talk I give a review of several baryogenesis mechanisms in supersymmetric theories.View full abstractDownload PDF (453K) -
Chung-Hsien ChouArticle type: Article
2003 Volume 107 Issue 2 Pages B21-B23
Published: May 20, 2003
Released on J-STAGE: October 02, 2017
JOURNAL FREE ACCESSIn scenarios of fat brane or universal extra dimensions, the SM particles are allowed to propagate in the extra spatial dimensions, which leads to the enhancement of production cross sections of black holes and p-branes. Especially, the ratio of p-brane cross section to the black hole cross section increases substantially, in comparison with the original confined scenario. The ratio can be as large as 105 (for the case n 7, m=5=p=r=k).View full abstractDownload PDF (264K) -
M. QuirosArticle type: Article
2003 Volume 107 Issue 2 Pages B24-B44
Published: May 20, 2003
Released on J-STAGE: October 02, 2017
JOURNAL FREE ACCESSSome old and new ideas on symmetry breaking, based on the presence of extra dimensions that have been the subject of a very fast development and intensive studies during the last years, will be presented in these lectures. Special attention will be devoted to the various compactification mechanisms, including toroidal and orbifold compactifications, and to non-trivial boundary conditions or Scherk-Schwarz compactification. Also symmetry breaking by Wilson lines, or Hosotani breaking characteristic of non-simply connected compact manifolds will be analyzed in some detail. The different mechanisms will be applied to the breaking of the most relevant symmetries in particle physics: supersymmetry and gauge symmetry. The required background for these lectures is Quantum Field Theory, Supersymmetry and some rudiments of Kaluza-Klein theory. The different sections will be illustrated with examples.View full abstractDownload PDF (1309K) -
D. V. Soa, H. N. Long, D. T. Binh, N. Q. Lan, P. D. khoi, Tr. T. Huong ...Article type: Article
2003 Volume 107 Issue 2 Pages B45-B47
Published: May 20, 2003
Released on J-STAGE: October 02, 2017
JOURNAL FREE ACCESSThe trilinear and quadrlinear couplings of bileptons with usual gauge bosons in the minimal 3-3-1 model are presented. We find that four different gauge boson couplings may have unusual space-time structure. Based on these results we show that couplings justify the tree unitarity requirement at high energy limit.View full abstractDownload PDF (170K) -
Naoyuki HABAArticle type: Article
2003 Volume 107 Issue 2 Pages B48-B49
Published: May 20, 2003
Released on J-STAGE: October 02, 2017
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Hyun Min LeeArticle type: Article
2003 Volume 107 Issue 2 Pages B50-B52
Published: May 20, 2003
Released on J-STAGE: October 02, 2017
JOURNAL FREE ACCESSWe consider the 5D gauge unification of SU(2)_L×U(1)_Y into SU(3)_w at a TeV scale. Compactification of the extra dimension on an orbifold S^1/(Z_2×Z'_2) allows fixed points where SU(2)_L×U(1)_Y representations can be assigned. We explain the long proton lifetime and the top-bottom mass hierarchy geometrically. We also show that local gauge anomalies on the orbifold can be exactly cancelled by a 5D Chern-Simons term with a jumping coefficient.View full abstractDownload PDF (238K) -
Nobuhito MaruArticle type: Article
2003 Volume 107 Issue 2 Pages B53-B55
Published: May 20, 2003
Released on J-STAGE: October 02, 2017
JOURNAL FREE ACCESSWe discuss the fermion mass hierarchy and their flavor mixings in the fat brane scenario. After fixing the matter configurations and introducing a SUSY breaking source, SUSY breaking parameters are formulated. The decoupling spectrum in our scenario are discussed in some detail.View full abstractDownload PDF (222K) -
Y.-Y. Keum, A.I. SandaArticle type: Article
2003 Volume 107 Issue 2 Pages B56-B71
Published: May 20, 2003
Released on J-STAGE: October 02, 2017
JOURNAL FREE ACCESSWe discuss the perturbative QCD approach for the exclusive two body B-meson decays to light mesons. We briefly review its ingredients and some important theoretical issues on factorization approach. We show numerical results which are compatible with present experimantal data for the charmless B-meson decays. Specailly we predict the possibility of large direct CP violation effects in B^0→π^+π^- (23±7%) and B^0→K^+π^- (-17±5%). In the last section we investigate two methods to determine the weak phases Φ_2 and Φ_3 from B→ππ, Kπ processes. We obtain bounds on Φ_2 and Φ_3 from present experimental measurements.View full abstractDownload PDF (1036K) -
Hideaki Hayakawa, Takeshi KurimotoArticle type: Article
2003 Volume 107 Issue 2 Pages B72-
Published: May 20, 2003
Released on J-STAGE: October 02, 2017
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Makiko NagashimaArticle type: Article
2003 Volume 107 Issue 2 Pages B73-B75
Published: May 20, 2003
Released on J-STAGE: October 02, 2017
JOURNAL FREE ACCESSThe procedure of k_T factorization proof in PQCD method is shown, by considering the radiative corrections to πγ*→γ. In this report, the proof of the k_T factorization is demonstrated at O(α_s) diagrams as a simple example. This demonstration supplies us, however, the key points toward the all-order proof of k_T factorization theorem for exclusive B meson decays.View full abstractDownload PDF (223K) -
Hsiang-nan LiArticle type: Article
2003 Volume 107 Issue 2 Pages B76-B77
Published: May 20, 2003
Released on J-STAGE: October 02, 2017
JOURNAL FREE ACCESSI review the recent progress on the perturbative QCD approach to three-body nonleptonic B decays.View full abstractDownload PDF (153K) -
Csaba CsakiArticle type: Article
2003 Volume 107 Issue 2 Pages B78-B98
Published: May 20, 2003
Released on J-STAGE: October 02, 2017
JOURNAL FREE ACCESSWe discuss how to constrain two interesting models with new physics at the TeV scale. The first one is the Randall-Sundrum model with gauge fields in the bulk. We find, that in order to have successful electroweak symmetry breaking the wave-functions of the bulk gauge fields have to be varying, which introduces a large S and T parameter. This in turn implies that the mass scale of the KK gauge bosons must be so heavy that they would be onobservable at the LHC. The second one is the Dimopoulos-Kaplan model of electroweak symmetry breaking via the SU(3)×SU(2) ×U(1) gauge group. We again find that due to the mixing between the heavy and the light gauge bosons there would be large corrections to electroweak prescision measurements, and the model is so constrained that it would not be observable at the LHC.View full abstractDownload PDF (1467K) -
E.A. PaschosArticle type: Article
2003 Volume 107 Issue 2 Pages B99-B101
Published: May 20, 2003
Released on J-STAGE: October 02, 2017
JOURNAL FREE ACCESSThe talk reviews the status of Leptogenesis and argues that it provides a very attractive scheme for producing the Baryon excess observed in the universe.View full abstractDownload PDF (218K) -
Chao-Shang Huang, Wei LiaoArticle type: Article
2003 Volume 107 Issue 2 Pages B102-B104
Published: May 20, 2003
Released on J-STAGE: October 02, 2017
JOURNAL FREE ACCESSCP violation in rare leptonic B decays are analyzed in the standard model (SM) and models beyond SM (supersymmetric models and two Higgs doublet models).View full abstractDownload PDF (265K) -
Yoshinobu KuramashiArticle type: Article
2003 Volume 107 Issue 2 Pages B105-
Published: May 20, 2003
Released on J-STAGE: October 02, 2017
JOURNAL FREE ACCESSI review recent developments in lattice QCD focusing on an aspect of phenomenological application.View full abstractDownload PDF (66K) -
M.N. Chernodub, Tsuneo SuzukiArticle type: Article
2003 Volume 107 Issue 2 Pages B106-B108
Published: May 20, 2003
Released on J-STAGE: October 02, 2017
JOURNAL FREE ACCESSThe string breaking is discussed in U(1)^<N-1> Abelian effective theories of QCD. When a screening is expected, the static potential shows a flattening in the long-range region and a linear behavior in the intermediate region. We show why the screening is better observed in the Polyakov-loop correlators than in the Wilson loops. The breaking of the adjoint string is explained without the Z(N) picture.View full abstractDownload PDF (264K) -
Nobuhiro Maekawa, Toshifumi YamashitaArticle type: Article
2003 Volume 107 Issue 2 Pages B109-B110
Published: May 20, 2003
Released on J-STAGE: October 02, 2017
JOURNAL FREE ACCESSWe propose a natural Higgs sector in E_6 grand unified theory (GUT) with anomalous U(1)_A gauge symmetry. Here, the doublet-triplet(DT) splitting can be naturally realized. Moreover, combining the Higgs sector and the matter sector, which successfully reproduces realistic quark and lepton mass matrices, we can obtain a completely consistent E_6 GUT scenario.View full abstractDownload PDF (212K) -
A.D. DolgovArticle type: Article
2003 Volume 107 Issue 2 Pages B111-B119
Published: May 20, 2003
Released on J-STAGE: October 02, 2017
JOURNAL FREE ACCESSSeveral cosmological effects produced by neutrinos are briefly discussed. Upper and lower cosmological limits on neutrino mass are derived. The role that neutrinos may play in formation of large scale structure of the universe is described and neutrino mass limits are presented. Effects of neutrinos on cosmological background radiation and on big bang nucleosynthesis are discussed. Limits on the number of neutrino flavors and mass/mixing are given.View full abstractDownload PDF (722K) -
Article type: Appendix
2003 Volume 107 Issue 2 Pages App2-
Published: May 20, 2003
Released on J-STAGE: October 02, 2017
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Article type: Appendix
2003 Volume 107 Issue 2 Pages App3-
Published: May 20, 2003
Released on J-STAGE: October 02, 2017
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Article type: Cover
2003 Volume 107 Issue 2 Pages Cover2-
Published: May 20, 2003
Released on J-STAGE: October 02, 2017
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Article type: Cover
2003 Volume 107 Issue 2 Pages Cover3-
Published: May 20, 2003
Released on J-STAGE: October 02, 2017
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