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理学博士(東京大学)
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理学修士(東京大学)
Details of the Researcher
Committee Memberships 6
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高エネルギー委員会 委員
2013/10 - 2015/09
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高エネルギー委員会 委員
2013/10 - 2015/09
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物理学会 領域代表(素粒子論)
2011/10 - 2012/03
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物理学会 領域代表(素粒子論)
2011/10 - 2012/03
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素粒子論グループ 素粒子論委員会委員・幹事
2007/04 -
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素粒子論グループ 素粒子論委員会委員・幹事
2007/04 -
Professional Memberships 1
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日本物理学会
Research Interests 2
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宇宙論
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素粒子理論
Research Areas 1
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Natural sciences / Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics /
Papers 84
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Higgs Mixing in the NMSSM and Light Higgsinos Peer-reviewed
K.S. Jeong, Y. Shoji, M. Yamaguchi
JHEP 1411 148 2014/11/01
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Higgs mixing and diphoton rate enhancement in NMSSM models Peer-reviewed
K. Choi, S.H. Im, K.S. Jeong, M. Yamaguchi
JHEP 1302 090 2013/02
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Light Higgsino in Heavy Gravitino Scenario with Successful Electroweak Symmetry Breaking Peer-reviewed
J.S. Jeong, M. Shimosuka, M. Yamaguchi
JHEP (1209) 050 2012/09
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Singlet-doublet Higgs mixing and its implications on the Higgs mass in PQ-NMSSM Peer-reviewed
K.S. Jeong, Y. Shoji, M. Yamaguchi
JHEP 1209 007 2012/09
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Peccei-Quinn invariant extension of the NMSSM Peer-reviewed
K.S. Jeong, Y. Shoji, M. Yamaguchi
JHEP (1204) 022 2012/04
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SuperTopcolor Peer-reviewed
H. Fukushima, R. Kitano, M. Yamaguchi
JHEP 1101 111 2011
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Axion model in gauge-mediated supersymmetry breaking and a solution to mu/Bmu problem Peer-reviewed
K.S. Jeong, M. Yamaguchi
JHEP 1107 124 2011
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Mixed Mediation of Supersymmetry Breaking with Anomalous U(1) Gauge Symmetry Peer-reviewed
K. Choi, K.S. Jeong, K. Okumura, M. Yamaguchi
JHEP 1106 049 2011
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Sparticle masses in deflected mirage mediation Peer-reviewed
K. Choi, K.S. Jeong, S. Nakamura, K. Okumura, M. Yamaguchi
JHEP 0904 107 2009/04
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Bs mixing phase and lepton flavor violation in supersymmetric SU(5) Peer-reviewed
Jae-hyeon Park, Masahiro Yamaguchi
PHYSICS LETTERS B 670 (4-5) 356-362 2009/01
DOI: 10.1016/j.physletb.2008.11.023
ISSN: 0370-2693
eISSN: 1873-2445
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Sflavor mixing map viewed from a high scale in supersymmetric SU(5) Peer-reviewed
P. Ko, J.H. Park, M. Yamaguchi
JHEP 0811 051 2008/11/17
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Axionic mirage mediation Peer-reviewed
Shuntaro Nakamura, Ken-ichi Okumura, Masahiro Yamaguchi
PHYSICAL REVIEW D 77 (11) 115027 2008/06
DOI: 10.1103/PhysRevD.77.115027
ISSN: 2470-0010
eISSN: 2470-0029
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A note on Polonyi problem Peer-reviewed
Shuntaro Nakamura, Masahiro Yamaguchi
PHYSICS LETTERS B 655 (3-4) 167-171 2007/11
DOI: 10.1016/j.physletb.2007.09.001
ISSN: 0370-2693
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Four-dimensional effective M theory on a singular G(2) manifold Peer-reviewed
Lara B. Anderson, Adam B. Barrett, Andre Lukas, Masahiro Yamaguchi
PHYSICAL REVIEW D 74 (8) 086008 2006/10
DOI: 10.1103/PhysRevD.74.086008
ISSN: 1550-7998
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Gravitino production from heavy moduli decay and cosmological moduli problem revived Peer-reviewed
Shuntaro Nakamura, Masahiro Yamaguchi
PHYSICS LETTERS B 638 (5-6) 389-395 2006/07
DOI: 10.1016/j.physletb.2006.05.078
ISSN: 0370-2693
eISSN: 1873-2445
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Gravitinos from heavy scalar decay Peer-reviewed
Takehiko Asaka, Shuntaro Nakamura, Masahiro Yamaguchi
PHYSICAL REVIEW D 74 (2) 023520 2006/07
DOI: 10.1103/PhysRevD.74.023520
ISSN: 2470-0010
eISSN: 2470-0029
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Gravitational Kaluza-Klein modes in warped superstring compactification Peer-reviewed
T Noguchi, M Yamaguchi, M Yamashita
PHYSICS LETTERS B 636 (3-4) 221-226 2006/05
DOI: 10.1016/j.physletb.2006.03.040
ISSN: 0370-2693
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Hierarchical mass structure of fermions in warped extra dimensions Peer-reviewed
S Chang, CS Kim, M Yamaguchi
PHYSICAL REVIEW D 73 (3) 033002 2006/02
DOI: 10.1103/PhysRevD.73.033002
ISSN: 1550-7998
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Neutralino dark matter from heavy gravitino decay Peer-reviewed
K Kohri, M Yamaguchi, J Yokoyama
PHYSICAL REVIEW D 72 (8) 083510 2005/10
DOI: 10.1103/PhysRevD.72.083510
ISSN: 2470-0010
eISSN: 2470-0029
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Bottom-up approach to moduli dynamics in heavy gravitino scenario: Superpotential, soft terms, and sparticle mass spectrum Peer-reviewed
M Endo, M Yamaguchi, K Yoshioka
PHYSICAL REVIEW D 72 (1) 015004 2005/07
DOI: 10.1103/PhysRevD.72.015004
ISSN: 2470-0010
eISSN: 2470-0029
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Recent measurements of CP asymmetries of B -> phi K-0 and B -> eta ' K-S at B-factories suggest new CP violation in left-handed squark mixing Peer-reviewed
M Endo, S Mishima, M Yamaguchi
PHYSICS LETTERS B 609 (1-2) 95-101 2005/03
DOI: 10.1016/j.physletb.2004.12.049
ISSN: 0370-2693
eISSN: 1873-2445
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Production and dilution of gravitinos by modulus decay Peer-reviewed
K Kohri, M Yamaguchi, J Yokoyama
PHYSICAL REVIEW D 70 (4) 43522 2004/08
DOI: 10.1103/PhysRevD.70.043522
ISSN: 0556-2821
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Large supersymmetric contribution to CP asymmetry of B-d ->phi K-S from left-handed squark mixing Peer-reviewed
M Endo, M Kakizaki, M Yamaguchi
PHYSICS LETTERS B 594 (1-2) 205-212 2004/07
DOI: 10.1016/j.physletb.2004.05.006
ISSN: 0370-2693
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Radiative CP phases in supergravity theories Peer-reviewed
M Endo, M Yamaguchi, K Yoshioka
PHYSICS LETTERS B 586 (3-4) 382-389 2004/04
DOI: 10.1016/j.physletb.2004.02.035
ISSN: 0370-2693
eISSN: 1873-2445
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New constraint on squark flavor mixing from Hg-199 electric dipole moment Peer-reviewed
M Endo, M Kakizaki, M Yamaguchi
PHYSICS LETTERS B 583 (1-2) 186-191 2004/03
DOI: 10.1016/j.physletb.2003.12.075
ISSN: 0370-2693
eISSN: 1873-2445
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Raising sfermion masses by adding extra matter fields Peer-reviewed
M Endo, M Yamaguchi, A Yotsuyanagi
PHYSICS LETTERS B 580 (3-4) 243-248 2004/02
DOI: 10.1016/j.physletb.2003.11.039
ISSN: 0370-2693
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Proton decay, fermion masses and texture from extra dimensions in SUSY GUTs Peer-reviewed
M. Kakizaki, M. Yamaguchi
Int. J. Mod. Phys. A 19 1715 2004
DOI: 10.1142/S0217751X04018257
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Electroweak symmetry breaking in supersymmetric gauge - Higgs unification models Peer-reviewed
K. Choi, N. Haba, K. Jeong, K. Okumura, Y. Shimizu, M. Yamaguchi
JHEP 402 37 2004
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Singular Kahler potential and heavy top quark in a democratic mass matrix model Peer-reviewed
M Kakizaki, M Yamaguchi
PHYSICS LETTERS B 573 (1-4) 123-130 2003/10
DOI: 10.1016/j.physletb.2003.08.040
ISSN: 0370-2693
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Democratic (s)fermions and lepton flavor violation Peer-reviewed
K Hamaguchi, M Kakizaki, M Yamaguchi
PHYSICAL REVIEW D 68 (5) 56007 2003/09
DOI: 10.1103/PhysRevD.68.056007
ISSN: 2470-0010
eISSN: 2470-0029
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Splitting triplet and doublet in extra dimensions Peer-reviewed
M. Kakizaki, M. Yamaguchi
Prog. Theor. Phys. 107 433 2002
DOI: 10.1143/PTP.107.433
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Bottom-tau unification in SUSY SU(5) GUT and constraints from b to s gamma and muon g-2 Peer-reviewed
S. Komine, M. Yamaguchi
Phys. Rev. D 65 75013 2002
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Anomaly-mediated supersymmetry breaking with axion Peer-reviewed
N. Abe, T. Moroi, M. Yamaguchi
JHEP 201 10 2002
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U(1) flavor symmetry and proton decay in supersymmetric standard model Peer-reviewed
M. Kakizaki, M. Yamaguchi
JHEP 206 32 2002
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Dynamical solution to supersymmetric CP problem with vanishing B parameter'' Peer-reviewed
M. Yamaguchi, K. Yoshioka
Phys. Lett. B 543 189 2002
DOI: 10.1016/S0370-2693(02)02454-1
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Phenomenology of minimal supergravity with vanishing A and B soft supersymmetry-breaking parameters'' Peer-reviewed
M. Endo, M. Matsumura, M. Yamaguchi
Phys. Lett. B 544 161 2002
DOI: 10.1016/S0370-2693(02)02500-5
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No-scale scenario with non-universal gaugino masses'' Peer-reviewed
S. Komine, M. Yamaguchi
Phys. Rev. D 63 35005 2001
DOI: 10.1103/PhysRevD.63.035005
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Recent result from E821 experiment on muon g-2 and unconstrained minimal supersymmetric standard model Peer-reviewed
S. Komine, T. Moroi, M. Yamaguchi
Phys. Lett. B 506 93 2001
DOI: 10.1016/S0370-2693(01)00381-1
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No-scale scenarios in the light of new measurement of muon anomalous magnetic moment Peer-reviewed
S. Komine, T. Moroi, M. Yamaguchi
Phys. Lett. B 507 224 2001
DOI: 10.1016/S0370-2693(01)00452-X
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Inflation with low reheat temperature and cosmological constraint on stable charged massive particles Peer-reviewed
A. Kudo, M. Yamaguchi
Phys. Lett. B 516 151 2001
DOI: 10.1016/S0370-2693(01)00938-8
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Axion model in extra dimensions with TeV scale gravity Peer-reviewed
S. Chang, S. Tazawa, M. Yamaguchi
Phys. Rev. D 61 84005 2000
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Pattern of neutrino oscillations in supersymmetry with bilinear R-parity violation'' Peer-reviewed
F. Takayama, M. Yamaguchi
Phys. Lett. B 476 116 2000
DOI: 10.1016/S0370-2693(00)00104-0
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Bulk standard model in the Randall-Sundrum background'' Peer-reviewed
S. Chang, J. Hisano, H. Nakano, N. Okada, M. Yamaguchi
Phys. Rev. D 62 84025 2000
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Low-scale anomalous U(1) and decoupling solution to supersymmetric flavor problem Peer-reviewed
S. Komine, Y. Yamada, M. Yamaguchi
Phys. Lett. B 481 67 2000
DOI: 10.1016/S0370-2693(00)00443-3
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Gravitino dark matter without R-parity Peer-reviewed
F. Takayama, M. Yamaguchi
Phys. Lett. B 485 388 2000
DOI: 10.1016/S0370-2693(00)00726-7
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Hadronic axion model in gauge-mediated supersymmetry breaking and cosmology of saxion Peer-reviewed
T. Asaka, M. Yamaguchi
Phys. Rev. D 59 125003 1999
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Effects of extra space-time dimensions on the Fermi constant Peer-reviewed
P. Nath, M. Yamaguchi
Phys. Rev. D 60 116004 1999
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Effects of Kaluza-Klein excitations on g(mu)-2 Peer-reviewed
P. Nath, M. Yamaguchi
Phys. Rev. D 60 116006 1999
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Probing the nature of compactification with Kaluza-Klein excitations at the Large Hadron Collider Peer-reviewed
P. Nath, Y. Yamada, M. Yamaguchi
Phys. Lett. B 466 100 1999
DOI: 10.1016/S0370-2693(99)01141-7
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The formation of Cosmic structures in a light gravitino dominated universe Peer-reviewed
YAMAGUCHI Masahiro
Physcical Review D 57 2089 1998
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Axion cosmology with its scalar superpartner Peer-reviewed
M. Hashimoto, K.I. Izawa, M. Yamaguchi, T. Yanagida
Phys. Lett. B 437 44 1998
DOI: 10.1016/S0370-2693(98)00887-9
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Gravitino overproduction through moduli decay Peer-reviewed
M. Hashimoto, K.I. Izawa, M. Yamaguchi, T. Yanagida
Prog. Theor. Phys. 100 395 1998
DOI: 10.1143/PTP.100.395
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Late-time entropy production and relic abundances of neutralinos Peer-reviewed
T. Nagano, M. Yamaguchi
Phys. Lett. B 438 267 1998
DOI: 10.1016/S0370-2693(98)00989-7
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Relic abundance of neutralinos in heterotic string theory: Weak coupling vs. strong coupling Peer-reviewed
Y. Kawamura, H.P. Nilles, M. Olechowski, M. Yamaguchi
JHEP 9806 8 1998
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Hadronic axion model in gauge-mediated supersymmetry breaking Peer-reviewed
T. Asaka, M. Yamaguchi
Phys. Lett. B 437 51 1998
DOI: 10.1016/S0370-2693(98)00890-9
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Supersymmetry breakdown at a hidden wall Peer-reviewed
H.P. Nilles, M. Olechowski, M. Yamaguchi
Nucl. Phys. B 530 43 1998
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Exact Event Rates of Lepton Flavor Violating Processes in Supersymmefric SU(5)Model Peer-reviewed
YAMAGUCHI Masahiro
Physics Letter B 391 341 1997
DOI: 10.1016/S0370-2693(96)01473-6
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Supersymmetry Breaking and Soft Terms in M Theory Peer-reviewed
YAMAGUCHI Masahiro
Physics Letters B 415 (1) 24 1997
DOI: 10.1016/S0370-2693(97)01212-4
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Post inflationary behaviour of string moduli Peer-reviewed
A Lukas, A Niemeyer, M Yamaguchi
NUCLEAR PHYSICS B 481 (1-2) 433-452 1996/12
ISSN: 0550-3213
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Particle production and gravitino abundance after inflation Peer-reviewed
H Fujisaki, K Kumekawa, M Yoshimura, M Yamaguchi
PHYSICAL REVIEW D 54 (4) 2494-2503 1996/08
ISSN: 0556-2821
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Particle production and dissipative cosmic field Peer-reviewed
H Fujisaki, K Kumekawa, M Yamaguchi, M Yoshimura
PHYSICAL REVIEW D 53 (12) 6805-6812 1996/06
ISSN: 0556-2821
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Lepton-flavor violation via right-handed neutrino Yukawa couplings in the supersymmetric standard model Peer-reviewed
J Hisano, T Moroi, K Tobe, M Yamaguchi
PHYSICAL REVIEW D 53 (5) 2442-2459 1996/03
ISSN: 0556-2821
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Light Gravitino as Mixed Dark Matter Peer-reviewed
YAMAGUCHI Masahiro
Physics Letters B 386 189 1996
DOI: 10.1016/0370-2693(96)00956-2
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Geometric bremsstrahlung in the earlyuniverse Peer-reviewed
YAMAGUCHI Masahiro
Progress of Theoretical Physics 96 113 1996
DOI: 10.1143/PTP.96.113
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LEPTON-FLAVOR VIOLATION IN THE SUPERSYMMETRIC STANDARD MODEL WITH SEESAW-INDUCED NEUTRINO MASSES Peer-reviewed
J HISANO, T MOROI, K TOBE, M YAMAGUCHI, T YANAGIDA
PHYSICS LETTERS B 357 (4) 579-587 1995/09
DOI: 10.1016/0370-2693(95)00954-J
ISSN: 0370-2693
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Precision Study of Supersymmetry at Future Linear e+e- Colliders Peer-reviewed
YAMAGUCHI Masahiro
Physical Review D51 3153 1995
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Low-Energy Effective Lagrangian in Unified Theories with Non-Universal Supersymmetry Breaking Terms Peer-reviewed
YAMAGUCHI Masahiro
Physical Review D51 1337 1995
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THE HEAVY POLONYI FIELD AS A SOLUTION OF THE POLONYI PROBLEM Peer-reviewed
JOICHI, I, M YAMAGUCHI
PHYSICS LETTERS B 342 (1-4) 111-116 1995/01
DOI: 10.1016/0370-2693(94)01338-D
ISSN: 0370-2693
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On the Solution to the Polonyi Problem with O(10 TeV) Graviton Mass in Supergravity Peer-reviewed
YAMAGUCHI Masahiro
Physics Letters B 342 105 1995
DOI: 10.1016/0370-2693(94)01337-C
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PROBING THE SYMMETRY-BREAKING PATTERN USING SFERMION MASSES Peer-reviewed
Y KAWAMURA, H MURAYAMA, M YAMAGUCHI
PHYSICS LETTERS B 324 (1) 52-58 1994/03
DOI: 10.1016/0370-2693(94)00107-3
ISSN: 0370-2693
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Light Scalar Top Quark in the Minimal Supersymmetric Grand Unified Theory Peer-reviewed
YAMAGUCHI Masahiro
Physical Review Letters 72 3009 1994
DOI: 10.1103/PhysRevLett.72.3009
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COSMOLOGICAL CONSTRAINTS ON THE LIGHT STABLE GRAVITINO Peer-reviewed
T MOROI, H MURAYAMA, M YAMAGUCHI
PHYSICS LETTERS B 303 (3-4) 289-294 1993/04
DOI: 10.1016/0370-2693(93)91434-O
ISSN: 0370-2693
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PHENOMENOLOGICAL ASPECTS OF SUPERSYMMETRIC STANDARD MODELS WITHOUT GRAND UNIFICATION Peer-reviewed
S MIZUTA, D NG, M YAMAGUCHI
PHYSICS LETTERS B 300 (1-2) 96-103 1993/02
ISSN: 0370-2693
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Is Axino Dark Matter Possible in Supergravity? Peer-reviewed
YAMAGUCHI Masahiro
Physics Letters B 276 (1-2) 1993
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Bottom Qnark Mass Predictions in Non-Supersymmetric SU(5) Unification Peer-reviewed
YAMAGUCHI Masahiro
Physics Letters B 277 (1-2) 1993
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Coannihilation Effects and Relic Abundance of Higgsino Dominant LSPs Peer-reviewed
YAMAGUCHI Masahiro
Physics Letters B 298 (3-4) 289 1993
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Vanishing Squark and Slepton Masses in Supergravity Peer-reviewed
YAMAGUCHI Masahiro
Physical Review D 45 (1) 1992
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Mass Degeneracy of Squarks and Sleptons in Supergravity Peer-reviewed
YAMAGUCHI Masahiro
Progress of Theoretical Physics 86 (3) 1992
DOI: 10.1143/PTP.86.717
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Renormalization-Group Analysis on the Higgs Mass in the Softly-Broken Supersymmetric Standard Model Peer-reviewed
YAMAGUCHI Masahiro
Physics Letters B 262 (1) 1991
DOI: 10.1016/0370-2693(91)90642-4
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Upper Bound of the Lightest Higgs Boson Mass in the Minimal Supersymmetric Standard Model Peer-reviewed
YAMAGUCHI Masahiro
Progress of Theoretical Physics 85 (1) 1991
DOI: 10.1143/PTP.85.1
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P and Q Operator Analysis for Two-Matrix Model Peer-reviewed
YAMAGUCHI Masahiro
Physics Letters B 250 (1-2) 1990
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Gauge Deformations of Conformal Filed Theories and Zamolodchikou's C-Function Peer-reviewed
YAMAGUCHI Masahiro
International Journal of Modern Physics A 5 (22) 1990
DOI: 10.1142/S0217751X90001781
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Ambiguities and BRST Anomalies in 4D Heterofic String Theories Peer-reviewed
YAMAGUCHI Masahiro
International Journal of Modern Physics A 5 (3) 1990
DOI: 10.1142/S0217751X90000234
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Boson-Fermion Mass Spliffings in Four-Dimensional Heterofic string Models with Anomalous U(1) Gauge Groups Peer-reviewed
YAMAGUCHI Masahiro
Nuclear Physics B 327 (3) 1989
Misc. 4
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String theory in the era of the Large Hadron Collider
M.ダイン(山口
パリティ 2008 (8) 46-55 2008/08
Publisher: 丸善ISSN: 0911-4815
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ヒッグス粒子はどこにあるか?
山口昌弘
数理科学 45 (11) 47-52 2007/11
Publisher: サイエンス社 -
Prospects of physics beyond the standard model: Supersymmetry
Masahiro Yamaguchi
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 76 (11) 111012 2007/11
ISSN: 0031-9015
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アクシオンは存在するか
山口昌弘
数理科学 44 (12) 55-58 2006/12
Publisher: サイエンス社
Presentations 10
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Mirage Mediation of Supersymmetry Breaking: Phenomenology and Cosmology International-presentation
TeV Particle Astrophysics 2008/09/24
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Axionic mirage mediation International-presentation
Japan-France joint workshop on Cosmology of the Early Universe 2008/05/14
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Axionic Mirage Mediation International-presentation
Pheno08 2008/04/28
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Gravitational Kaluza-Klein modes in warped string compactification International-presentation
International Conference of High Energy Physics in Cairo 2006/01/14
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Flavor physics in SUSY International-presentation
Higgs&SUSY conference 2005/11/23
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Extra Dimensions at Terascale International-presentation
Japansese-American Frontiers of Science Symposium 2005/11/10
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b to s transitions in SUSY: left-handed vs. right-handed International-presentation
3rd International conference on flavor physics 2005/10/02
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宇宙論との接点(シンポジュウム・国際リニアコライダー計画の進展)
日本物理学会 2005/09/12
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Phenonemonogy and cosmology of heavy gravitino scenario
素粒子物理学の進展 2005/06/21
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Phenomenology and cosmology of heavy gravitino scenario International-presentation
Particle, Strings and Cosmology (PASCOS) 2005/05/30
Social Activities 2
Other 1
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余剰次元をもつ模型に基づく素粒子物理と宇宙論