Showing 2003 · hep-phShow all

36 papers · 2 filters

hep-ph2003★ 1 cited

Possibility of color magnetic superconductivity

Toshitaka Tatsumi, Tomoyuki Maruyama, Eiji Nakano

Two aspects of quark matter at high density are addressed: one is color superconductivity and the other is ferromagnetism. We are mainly concerned with the latter and its relation…

hep-ph2003★ 27 cited

Ferromagnetism and Superconductivity in Quark Matter - Color magnetic superconductivity -

Toshitaka Tatsumi, Tomoyuki Maruyama, Eiji Nakano

A coexistent phase of spin polarization and color superconductivity in high-density QCD is studied at zero temperature. The axial-vector self-energy stemming from the Fock exchange…

hep-ph2003★ 118 cited

Determination of polarized parton distribution functions and their uncertainties

M. Hirai, S. Kumano, N. Saito

We investigate the polarized parton distribution functions (PDFs) and their uncertainties by using the world data on the spin asymmetry A_1. The uncertainties of the polarized PDFs…

hep-ph2003★ 32 cited

SUSY Parameter Determination in Combined Analyses at LHC/LC

K. Desch, J. Kalinowski, G. Moortgat-Pick +2

We demonstrate how the interplay of a future e^+e^- LC at its first stage with sqrt{s} sim 500 GeV and of the LHC could lead to a precise determination of the fundamental SUSY para…

hep-ph2003★ 1 cited

Pseudogap of Color Superconductivity

Masakiyo Kitazawa, Tomoi Koide, Teiji Kunihiro +1

We show that the pseudogap of the quark density of states is formed in hot quark matter as a precursory phenomenon of the color superconductivity on the basis of a low-energy effec…

hep-ph2003★ 7 cited

Non-perturbative Kahler Potential, Dilaton Stabilization and Fayet-Iliopoulos Term

Tetsutaro Higaki, Yoshiharu Kawamura, Tatsuo Kobayashi +1

We study the dilaton stabilization in models with anomalous U(1) symmetry by adding specific string-motivated, non-perturbative corrections to the tree-level dilaton Kähler potenti…

hep-ph2003★ 1 cited

The Chiral Phase Transition of hot QCD from the Exact Renormalization Group

Dai Shimizube, Jun-Ichi Sumi

The chiral phase transition of the finite temperature QCD is discussed in the ladder approximated Exact (Wilson's) Renormalization Group (ERG). The gluon thermal mass is incorporat…

hep-ph2003★ 1 cited

GUT with Anomalous U(1) Suggests Heterotic M-Theory?

Nobuhiro Maekawa

We show that a new GUT scenario we proposed indicates that heterotic M-theory is one of the most interesting possibility to describe our world because of the two features in the sc…

hep-ph2003★ 3 cited

The BABAR Resonance as a Four-quark Meson

K. Terasaki

By assigning the narrow scalar resonance (which has been recently observed at the B-factories) to one of iso-triplet four-quark mesons containing a charm quark, two body decays of…

hep-ph2003★ 35 cited

Study of the Gauge Mediation Signal with Non-pointing Photons at the CERN LHC

Kiyotomo Kawagoe, Tomio Kobayashi, Mihoko M. Nojiri +1

In this paper we study the gauge mediation signal with the ATLAS detector at the CERN LHC. We focus on the case where the NLSP is the long-lived lightest neutralino ()…

hep-ph2003★ 39 cited

Pseudogap of Color Superconductivity in Heated Quark Matter

M. Kitazawa, T. Koide, T. Kunihiro +1

We show that the pseudogap of the quark density of states is formed in hot quark matter as a precursory phenomenon of the color superconductivity on the basis of a low-energy effec…

hep-ph2003★ 102 cited

Scalar Particles in Lattice QCD

Teiji Kunihiro, Shin Muroya, Atushi Nakamura +3

We report a project to study scalar particles by lattice QCD simulations. After a brief introduction of the current situation of lattice study of the sigma meson, we describe our n…

hep-ph2003★ 15 cited

Anomalous U(1) D-term Contribution in Type I String Models

Tetsutaro Higaki, Yoshiharu Kawamura, Tatsuo Kobayashi +1

We study the -term contribution for anomalous U(1) symmetries in type I string models and derive general formula for the -term contribution, assuming that the dominant source…

hep-ph2003★ 2 cited

Proposal for Generic Size of Large Extra Dimensions

Satoshi Matsuda, Shigenori Seki

In order to resolve the hierarchy problem, large extra dimensions have been introduced, and it has been suggested that the size of extra dimensions is sub-millimeter. On the other…

hep-ph2003★ 11 cited

Dilaton and Moduli Fields in D-term inflation

Tatsuo Kobayashi, Osamu Seto

We investigate the possibility of -term inflation within the framework of type I string-inspired models. Although -term inflation model has the excellent property that it is…

hep-ph2003★ 150 cited

Chiral and Color-superconducting Phase Transitions with Vector Interaction in a Simple Model (Addenda)

Masakiyo Kitazawa, Tomoi Koide, Teiji Kunihiro +1

In the preceding paper(Prog.Theor.Phys.108(2002)929 or hep-ph/0207255), we have shown that the critical line of the first order chiral transition of QCD can have two endpoints. In…

hep-ph2003★ 465 cited

Explosive Dark Matter Annihilation

Junji Hisano, Shigeki Matsumoto, Mihoko M. Nojiri

If the Dark Matter (DM) in the Universe has interactions with the standard-model particle, the pair annihilation may give the imprints in the cosmic ray. In this paper we study the…

hep-ph2003★ 7 cited

Target Mass Effects in Polarized Virtual Photon Structure Functions

Hideshi Baba, Ken Sasaki, Tsuneo Uematsu

We study target mass effects in the polarized virtual photon structure functions , in the kinematic region , where $-Q^2 (-…

hep-ph2003★ 65 cited

Linking the chiral and deconfinement phase transitions

Yoshitaka Hatta, Kenji Fukushima

We show that the electric glueball becomes critical at the end-point of the deconfinement phase transition in finite temperature QCD. Based on this observation and existing lattice…

hep-ph2003★ 88 cited

B-Bbar mixing in unquenched lattice QCD

JLQCD Collaboration, S. Aoki, M. Fukugita +13

We present an unquenched lattice calculation for the transition amplitude. The calculation, carried out at an inverse lattice spacing = 2.22(4) GeV, incorpora…

hep-ph2003

Impact and Implication of Bi-Large Neutrino Mixings on GUTs

Taichiro Kugo

Under the assumptions that 1) the quark/lepton mass matrices take Froggatt-Nielsen's factorized power form λ^{ψ_i+ψ_j} with anomalous U(1) charges ψ_i, and 2) the U(1) charges ψ_i…

hep-ph2003★ 132 cited

BABAR resonance as a new window of hadron physics

K. Terasaki

Possible decays of four-quark mesons are studied by assigning the newly observed BABAR resonance to a four-quark meson with C=S=I=1. It is expected that some of them can be observe…

hep-ph2003

Study of stop and sbottom at LHC

Mihoko M. Nojiri

In supersymmetric models a gluino can decay into through a stop or a sbottom. The decay chain produces an edge structure in the distribution. Monte Car…

hep-ph2003★ 7 cited

SUSY dark matter --A collider Physicist's Perspective--

Mihoko M. Nojiri

A short tour of supersymmetric dark matter and its connection to collider physics.