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# 野尻　美保子

研究者氏名 野尻　美保子 ノジリ　ミホコ http://research.kek.jp/people/nojiri 素粒子原子核研究所 高エネルギー加速器研究機構素粒子原子核研究機構 教授 東京大学カブリ数物連携宇宙研究機構 30222201 mihoko_nojiri

## 研究分野

• 物理学 / 素粒子・原子核・宇宙線・宇宙物理 /

## 経歴

2007年10月
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2006年
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高エネルギー加速器研究機構教授

2006年1月
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2007年3月

1997年
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2004年12月

1993年7月

-1997 高エネルギ物理学研究所助手

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1990年

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1985年

2015年4月
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2007年10月
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2009年7月
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2011年7月

2009年4月
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2010年3月

## Misc

Keisuke Harigaya, Takafumi Igari, Mihoko M. Nojiri, Michihisa Takeuchi, Kazuhiro Tobe
JHEP 03(2014) 105      2014年3月   [査読有り]
In this paper, we consider phenomenology of a model with an
gauge symmetry. Since the muon couples to the gauge boson
(called boson), its contribution to the muon anomalous magnetic moment
(muon g-2) can account...
Howard Baer, Mikael Berggren, Jenny List, Mihoko M. Nojiri, Maxim Perelstein, Aaron Pierce, Werner Porod, Tomohiko Tanabe
2013年7月
The International Linear Collider (ILC) has recently proven its technical
maturity with the publication of a Technical Design Report, and there is a
strong interest in Japan to host such a machine. We summarize key aspects of
the Beyond the Standa...
Biplob Bhattacherjee, Shigeki Matsumoto, Satyanarayan Mukhopadhyay, Mihoko M. Nojiri
JHEP10(2013)032      2013年6月   [査読有り]
Asymmetric dark matter (ADM) has been an attractive possibility attempting to
explain the observed ratio of baryon to dark matter abundance in the universe.
While a bosonic ADM is constrained by the limits from existence of old neutron
stars, a fe...
Biplob Bhattacherjee, Debajyoti Choudhury, Keisuke Harigaya, Shigeki Matsumoto, Mihoko M. Nojiri
JHEP 1304 (2013) 031      2012年12月   [査読有り]
Present and future expected limits on interactions between dark matter and
various quarks are thoroughly investigated in a model-independent way. In
particular, the constraints on the interactions from the Large Hadron Collider
(LHC) experiment ar...

パリティ   27(12) 17-21   2012年12月
Biplob Bhattacherjee, Sourav K. Mandal, Mihoko Nojiri
JHEP 1303 (2013) 105      2012年11月   [査読有り]
Top polarization is an important probe of new physics that couples to the top
sector, and which may be discovered at the 14 TeV LHC. Taking the example of
the MSSM, we argue that top polarization measurements can put a constraint on
the soft super...
Ben Gripaios, Keiko Nagao, Mihoko Nojiri, Kazuki Sakurai, Bryan Webber
JHEP 03(2013)106      2012年10月   [査読有り]
We propose a method for reconstructing the mass of a particle, such as the
Higgs boson, decaying into a pair of tau leptons, of which one subsequently
undergoes a 3-prong decay. The kinematics is solved using information from the
visible decay pro...
Hirohisa Kubota, Mihoko Nojiri
Phys.Rev. D87 (2013) 076011      2012年7月   [査読有り]
In this paper we study the higgs-radion system of the Randall-Sundum model
where matter and gauge fields live in the bulk. We take into account the
Kalza-Klein(KK) loop correction for the higgs and the raidion coupling to the
gauge bosons. Inspire...
Keisuke Harigaya, Shigeki Matsumoto, Mihoko M. Nojiri, Kohsaku Tobioka
2012年4月
Vector-like quarks are introduced in various new physics models beyond the
standard model (SM) at the TeV scale. We especially consider the case that the
quark is singlet (triplet) under the SU(2) (SU(3)) gauge group and
couples only to th...
Keisuke Harigaya, Shigeki Matsumoto, Mihoko M. Nojiri, Kohsaku Tobioka
JHEP 1201 (2012) 135      2011年9月   [査読有り]
In the framework of the little higgs scenario, coupling constants of several
interactions are related to each other to guarantee the stability of the higgs
boson mass at one-loop level. This relation is called the little higgs
mechanism. We discus...
Hitoshi Murayama, Mihoko M. Nojiri, Kohsaku Tobioka
PhysRevD.84:094015,2011      2011年7月   [査読有り]
We study the discovery potential of the Minimal Universal Extra Dimension
model (MUED) and improve it utilizing the multijet + lepton mode at the LHC.
Since the MUED has a nearly degenerate spectrum, most events only have soft
jets and small Emiss...
Subhaditya Bhattacharya, Sanjoy Biswas, Biswarup Mukhopadhyaya, Mihoko M. Nojiri
2011年5月
We discuss large non-universality in the Higgs sector at high scale in
supersymmetric theories, in the context of the Large Hadron Collider (LHC). In
particular, we note that if is large and negative
($\simeq 10^6 {\rm ~G... Daniele Alves, Nima Arkani-Hamed, Sanjay Arora, Yang Bai, Matthew Baumgart, Joshua Berger, Matthew Buckley, Bart Butler, Spencer Chang, Hsin-Chia Cheng, Clifford Cheung, R. Sekhar Chivukula, Won Sang Cho, Randy Cotta, Mariarosaria D'Alfonso, Sonia El Hedri, Rouven Essig, Jared A. Evans, Liam Fitzpatrick, Patrick Fox, Roberto Franceschini, Ayres Freitas, James S. Gainer, Yuri Gershtein, Richard Gray, Thomas Gregoire, Ben Gripaios, Jack Gunion, Tao Han, Andy Haas, Per Hansson, JoAnne Hewett, Dmitry Hits, Jay Hubisz, Eder Izaguirre, Jared Kaplan, Emanuel Katz, Can Kilic, Hyung-Do Kim, Ryuichiro Kitano, Sue Ann Koay, Pyungwon Ko, David Krohn, Eric Kuflik, Ian Lewis, Mariangela Lisanti, Tao Liu, Zhen Liu, Ran Lu, Markus Luty, Patrick Meade, David Morrissey, Stephen Mrenna, Mihoko Nojiri, Takemichi Okui, Sanjay Padhi, Michele Papucci, Michael Park, Myeonghun Park, Maxim Perelstein, Michael Peskin, Daniel Phalen, Keith Rehermann, Vikram Rentala, Tuhin Roy, Joshua T. Ruderman, Veronica Sanz, Martin Schmaltz, Stephen Schnetzer, Philip Schuster, Pedro Schwaller, Matthew D. Schwartz, Ariel Schwartzman, Jing Shao, Jessie Shelton, David Shih, Jing Shu, Daniel Silverstein, Elizabeth Simmons, Sunil Somalwar, Michael Spannowsky, Christian Spethmann, Matthew Strassler, Shufang Su, Tim Tait, Brooks Thomas, Scott Thomas, Natalia Toro, Tomer Volansky, Jay Wacker, Wolfgang Waltenberger, Itay Yavin, Felix Yu, Yue Zhao, Kathryn Zurek 2012 J. Phys. G: Nucl. Part. Phys. 39 105005 2011年5月 This document proposes a collection of simplified models relevant to the design of new-physics searches at the LHC and the characterization of their results. Both ATLAS and CMS have already presented some results in terms of simplified models, and... 岩住 俊明, 延與 秀人, 筑本 知子, 千崎 文峰, 野尻 美保子, 河内 明子 日本物理學會誌 66(5) 380-385 2011年5月 Mihoko M. Nojiri, Jing Shu JHEP 1106:047,2011 2011年1月 We consider the spin determination of new colored particles in the missing energy plus jets channel at the early stage of LHC. We use a three site moose model to describe the low energy Lagrangian of all same spin partner (LHT or UED like) models ... Sourav K. Mandal, Mihoko Nojiri, Matthew Sudano, Tsutomu T. Yanagida, . JHEP 1101(131) 2011年 Won Sang Cho, William Klemm, Mihoko M. Nojiri Phys.Rev.D84:035018,2011 2010年8月 We report a new possibility of using the (Constransverse mass) variable for mass measurement in single step decay chains involving missing particles with moderate transverse momentum. We show that its experimental feasibility is enhanced c... Mihoko M. Nojiri, Kazuki Sakurai, Bryan R. Webber 2010年5月 A method is proposed for determining the masses of the new particles N,X,Y,Z in collider events containing a pair of effectively identical decay chains Z to Y+jet, Y to X+l_1, X to N+l_2, where l_1, l_2 are opposite-sign same-flavour charged lepto... Norita Kawanaka, Kunihito Ioka, Mihoko M. Nojiri, . Astrophys. J. 710(2,Pt.1) 958-963 2010年 Mihoko M. Nojiri, Kazuki Sakurai, Bryan R. Webber JHEP 1006(069) 2010年 Chuan-Ren Chen, Mihoko M. Nojiri, Warintorn Sreethawong JHEP 1011(012) 2010年 Mihoko M. Nojiri, Kazuki Sakurai Physical Review 82(11) 115026 2010年 Chuan-Ren Chen, Mihoko M. Nojiri, Seong Chan Park, Jing Shu 2009年8月 Kaluza-Klein photon in universal extra dimension models is one of the most attractive dark matter candidates as a weakly interacting massive particle. Having a characteristic split spectrum in split universal extra dimension the relic density of K... Sung-Gi Kim, Nobuhiro Maekawa, Keiko I. Nagao, Mihoko M. Nojiri, Kazuki Sakurai JHEP 0910:005,2009 2009年7月 We study the LHC signature of the minimal supersymmetric standard model with non-universal sfermion masses. In the model, soft masses of gauginos and the 3rd generation of 10 of SU(5) are around the weak scale, while other sfermion soft mass is un... Johan Alwall, Kenji Hiramatsu, Mihoko M. Nojiri, Yasuhiro Shimizu Phys.Rev.Lett.103:151802,2009 2009年5月 At hadron colliders, the production of heavy new particles is associated with additional quarks and gluons with significant transeverse momentum. The additional jets complicates the reconstruction of new particle masses. Taking gluino pair product... Norita Kawanaka, Kunihito Ioka, Mihoko M. Nojiri Astrophys.J.710:958-963,2010 2009年3月 We investigate the observed spectrum of cosmic-ray electrons and positrons from astrophysical sources, especially pulsars, and the physical processes for making the spectrum spiky or smooth via continuous and multiple electron/positron injections.... Chuan-Ren Chen, Mihoko M. Nojiri, Seong Chan Park, Jing Shu, Michihisa Takeuchi 2009年3月 We explicitly show that split-universal extra dimension (split-UED), a recently suggested extension of universal extra dimension (UED) model, can nicely explain recent anomalies in cosmic-ray positrons and electrons observed by PAMELA and ATIC/PPB... Chuan-Ren Chen, Koichi Hamaguchi, Mihoko M. Nojiri, Fuminobu Takahashi, Shoji Torii, JCAP 0905(015) 1 2009年 Junji Hisano, (Tokyo U., ICRR & Tokyo U., IPMU) , Mihoko M. Nojiri, (Tokyo U., IPMU & KEK, Tsukuba & Tsukuba, Graduate U. Adv. Studies) , Warintorn Sreethawong, (KEK, Tsukuba & Tsukuba, Graduate U. Adv. Studies) . JHEP 0906(044) 1 2009年 Chuan-Ren Chen, Mihoko M. Nojiri, Seong Chan Park, Jing Shu , Michihisa Takeuchi JHEP 0909(078) 2009年 Johan Alwall , Kenji Hiramatsu, Mihoko M. Nojiri, Yasuhiro Shimizu Phys. Rev. Lett. 103(151802) 2009年 Sung-Gi Kim, Nobuhiro Maekawa, Keiko I. Nagao, Mihoko M. Nojiri, Kazuki Sakurai JHEP 0910(005) 2009年 Junji Hisano, Mihoko M. Nojiri, Warintorn Sreethawong JHEP 0906:044,2009 2008年12月 Current limit on the dark matter relic abundance may suggest that should be smaller than prediction in the minimal supergravity scenario (mSUGRA) for moderate and . The electroweak-ino parameter and are th... Chuan-Ren Chen, Mihoko M. Nojiri, Fuminobu Takahashi, T. T. Yanagida Prog.Theor.Phys.122:553-559,2009 2008年11月 We show that the PAMELA anomaly in the positron fraction as well as the ATIC/PPB-BETS excesses in the e^- + e^+ flux are simultaneously explained in our scenario that a hidden U(1)H gauge boson constitutes dark matter of the Universe and decays in... Mihoko M. Nojiri AIP Conf.Proc.1078:79-83,2009 2008年9月 I review recent developments on the use of mT2 variables for SUSY parameter study, which might be useful for the data analysis in the early stage of the LHC experiments. I also review some of recent interesting studies. Talk in SUSY08. Mihoko M. Nojiri, Kazuki Sakurai, Yasuhiro Shimizu, Michihisa Takeuchi JHEP0810:100,2008 2008年8月 The ATLAS and CMS experiments at the Large Hadron Collider (LHC) may discover the squarks (\tilde{q}) and gluino (\tilde{g}) of the minimal supersymmetric standard model (MSSM) in the early stage of the experiments if their masses are lighter than... Mihoko M. Nojiri, Michihisa Takeuchi JHEP0810:025,2008 2008年2月 In the Littlest Higgs model with T-parity (LHT), top-partners (T_-) are produced in pairs at the Large Hadron Collider (LHC). Each top-partner decays into a top quark (t) and the lightest T-odd gauge partner A_H. We demonstrate reconstruction of t... Mihoko M. Nojiri, Yasuhiro Shimizu, Shogo Okada, Kiyotomo Kawagoe JHEP0806:035,2008 2008年2月 We propose an inclusive analysis of a stransverse mass (m_{T2}) using a hemisphere method for supersymmetry studies at the LHC . The hemisphere method is an algorithm to group collinear and high p_T particles and jets, assuming that there are two ... Mihoko M. Nojiri, Giacomo Polesello, Daniel R. Tovey Journal for High Energy Physics 0805(014) 2008年 野尻 美保子 日本物理學會誌 62(12) 929-935 2007年12月 宇宙の物質の大半を占める暗黒物質は,電荷をもたない,極あて相互作用の弱い素粒子であると考えられている.一方,素粒子標準模型は暗黒物質候補を含まないので,暗黒物質を矛盾なく説明できるように,見直される必要がある.暗黒物質は初期宇宙では素粒子の高エネルギー粒子衝突たよって生成されたと考えられるが,現在2008年から開始されるLHC実験ではまさにこのような高エネルギー衝突実験を行い暗黒物質の性質を明らかにしようとしている.本稿では暗黒物質研究とLHC実験の関係について解説する. Mihoko M. Nojiri, Michihisa Takeuchi Phys.Rev.D76:015009,2007 2007年1月 production is one of the main SUSY production processes in the MSSM, which occurs due to the chirality flip caused by the Majorana gluino mass. This process is one of the sources of same sign two lepton (SS2) events, h... Shigeki Matsumoto, Mihoko M. Nojiri, Daisuke Nomura Phys.Rev.D75:055006,2007 2006年12月 We study the Littlest Higgs model with T-parity at the LHC through pair productions of the T-odd top quark partner (T_-) which decays into the top quark and the lightest T-odd particle. We identify the region of parameters favored by the electrowe... Koichi Hamaguchi, Mihoko M. Nojiri, Albert de Roeck JHEP 0703:046,2007 2006年12月 If the scalar tau is the next lightest supersymmetric particle and decays into a gravitino () being the lightest supersymmetric particle, it will have generally a very long lifetime. In this paper, we investigate the possibilit... Kiyotomo Kawagoe, Mihoko M. Nojiri Phys.Rev. D74 (2006) 115011 2006年6月 Discovery of supersymmetric (SUSY) particles at the Large Hadron Collider(LHC) has been studied for the models where squarks and gluino are much heavier than the lightest supersymetric particle (LSP). In this paper, we investigate the SUSY discove... M. M. Nojiri, G Polesello , D.R. Tovey Journal of High Energy Physics 0603(063) 2006年 Hinchliffe Ian, Battaglia Marco, 野尻 美保子 パリティ 20(9) 6-15 2005年9月 Junji Hisano, Minoru Nagai, Mihoko M. Nojiri, Masato Senami Phys.Rev. D73 (2006) 031701 2005年4月 We investigate a possibility of neutralino dark matter (DM) direct detection in the future electron accelerators. That is counting of high p_T electron recoil events by neutralinos in halo. If selectron and neutralino masses would be precisely mea... Physical Review D71:035008 2005年 Junji Hisano, Shigeki. Matsumoto, Mihoko M. Nojiri, Osamu Saito Phys.Rev. D71 (2005) 063528 2004年12月 Detection of gamma rays from dark matter annihilation in the galactic center is one of the feasible techniques to search for dark matter. We evaluate the gamma ray flux in the case that the dark matter has an electroweak SU(2)_L charge. Such dark ... Yukihiro Kato, Keisuke Fujii, Teruki Kamon, Vadim Khotilovich, Mihoko M. Nojiri Phys.Lett. B611 (2005) 223-230 2004年11月 The lighter chargino pair production () is one of key processes for determination of supersymmetric parameters at a linear collider. If is a large value, the lighter stau ($\tilde{\...
Mihoko M. Nojiri
2004年11月
At the LHC, superpartners with the masses lighter than a few TeV may be
found, and the masses of the supersymmetric (SUSY) particles and their
interactions will be studied. The information would be the base to consider the
SUSY breaking mechanism ...
Koichi Hamaguchi, Yoshitaka Kuno, Tsuyoshi Nakaya, Mihoko M. Nojiri
Phys.Rev.D70:115007,2004      2004年9月
In models where the gravitino is the lightest supersymmetric particle (LSP),
the next-to-lightest supersymmetric particle (NLSP) is long-lived. We consider
an important charged NLSP candidate, the scalar tau . Slow
charged NLSPs may ...
Junji Hisano, Shigeki Matsumoto, Mihoko M. Nojiri, Osamu Saito
Phys.Rev. D71 (2005) 015007      2004年7月
The neutralino-nucleon (\tilde{\chi}^0-N) scattering is an important process
for direct dark matter searches. In this paper we discuss one-loop
contributions to the cross section in the wino-like and Higgsino-like LSP
cases. The neutralino-nucleon...
SUSY PARAMETER DETERMINATION IN COMBINED ANALYSES AT LHC / LC.
Journal of High Energy Physics   0402:035    2004年
STUDY OF THE SLEPTON NON-UNIVERSALITY AT THE CERN LARGE HADRON COLLIDER.
Physical Review   D70:075016    2004年
Kiyotomo Kawagoe, Tomio Kobayashi, Mihoko M. Nojiri, Atsuhiko Ochi
Phys.Rev. D69 (2004) 035003      2003年9月
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 () which decays dominantly into a photon
() and a gravit...

Junji Hisano, Shigeki Matsumoto, Mihoko M. Nojiri
Phys.Rev.Lett.92:031303,2004      2003年7月
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 pair annihilation processes of the DM,
which is neutral, however h...
Mihoko M. Nojiri
Pramana 62:659-662,2004      2003年5月
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 Carlo simulation studies show that the end point
and the edge hei...
Mihoko M. Nojiri
Pramana62:335-346,2004      2003年5月
A short tour of supersymmetric dark matter and its connection to collider
physics.
Junji Hisano, Kiyotomo Kawagoe, Mihoko M. Nojiri
Phys.Rev.D68:035007,2003      2003年4月
In supersymmetric models a gluino can decay into tb\tilde{\chi}^{\pm}_1
through a stop or a sbottom. The decay chain produces an edge structure in the
m_{tb} distribution. Monte Carlo simulation studies show that the end point and
the edge height ...
Junji Hisano, Sh. Matsumoto, Mihoko M. Nojiri
Phys.Rev. D67 (2003) 075014      2002年12月
The neutralino pair annihilation into two photons in our galactic halo gives
a robust dark matter signal, since it would give a quasi-monotonic gamma ray.
This process is radiatively-induced, and the full-one loop calculation was done
previously. ...
Jonathan L. Feng, Mihoko M. Nojiri
2002年10月
We present a pedagogical introduction to supersymmetry and supersymmetric
models and give an overview of the potential of the linear collider for
studying them. If supersymmetry is found, its discovery will bring with it many
more questions than a...
Junji Hisano, Kiyotomo Kawagoe, Ryuichiro Kitano, Mihoko M. Nojiri
Phys.Rev. D66 (2002) 115004      2002年4月
In the minimal supersymmetric standard model (MSSM) properties of the third
generation sfermions are important from the viewpoint of discriminating the
SUSY breaking models and in the determination of the Higgs boson mass. If
gluinos are copiously...
Junji Hisano, Ryuichiro Kitano, Mihoko M. Nojiri
Phys.Rev.D65:116002,2002      2002年2月
Measurement of Lepton-Flavor Violation (LFV) in the minimal SUSY Standard
Model (MSSM) at Large Hadron Collider (LHC) is studied based on a realistic
simulation. We consider the LFV decay of the second-lightest neutralino,
\$\tilde{\chi}^0_2 \to \t...
Yeong Gyun Kim, Mihoko M. Nojiri
Prog.Theor.Phys. 106 (2001) 561-575      2001年4月
We investigate the implications of the recent measurement of muon anomalous
magnetic moment for the direct detection of neutralino dark matter in the three
different SUSY models: mSUGRA, a model with non-universal Higgs mass, and an
SO(10) GUT mod...
Junji Hisano, Mihoko M. Nojiri, Nobuchika Okada
Phys.Rev. D64 (2001) 023511      2001年2月
The gauge-mediated SUSY-breaking (GMSB) model needs entropy production at a
relatively low temperature in the thermal history of the Universe for the
unwanted relics to be diluted. This requires a mechanism for the baryogenesis
after the entropy p...

We show that LHC experiments might well be able to determine all the parameters required for a prediction of the present density of thermal LSP relics from the Big Bang era. If the LSP is an almost pure bino we usually only need to determine its m...
HISANO J, KOHRI K, NOJIRI M M
Phys. Lett   505(1/4) 169-176   2001年
Manuel Drees, Yeong Gyun Kim, Tatsuo Kobayashi, Mihoko M. Nojiri
Phys.Rev.D63:115009,2001      2000年11月
We compare predictions for the spin-independent contribution to the
neutralino-proton scattering cross section and for the anomalous
magnetic dipole moment of the muon, , in models with
gravity-mediated supersymmetry br...
Manuel Drees, Yeong Gyun Kim, Mihoko M. Nojiri, Daisuke Toya, Kazumi Hasuko, Tomio Kobayashi
Phys.Rev.D63:035008,2001      2000年7月
We show that LHC experiments might well be able to determine all the
parameters required for a prediction of the present density of thermal LSP
relics from the Big Bang era. If the LSP is an almost pure bino we usually only
need to determine its m...
Mihoko M. Nojiri, Daisuke Toya, Tomio Kobayashi
Phys.Rev.D62:075009,2000      2000年1月
We study the distribution of lepton pairs from the second lightest neutralino
decay \tilde{\chi}^0_2-->\tilde{l}l followed by \tilde{l}\to \tilde{\chi}^0_1
l. The distribution of the ratio of lepton transverse momenta A_T shows peak
structure if m...
Mihoko M. Nojiri, Youichi Yamada
Phys.Rev.D60:015006,1999      1999年1月
We study the distribution of lepton pairs from the second lightest neutralino
decay \tchi^0_2\to\tchi^0_1 l^+l^-. This decay mode is important to measure the
mass difference between \tchi^0_2 and the lightest neutralino \tchi^0_1, which
helps to d...

Supersymmetry and Future Collider
Proceeding of KIAS-CTP International Symposium on Supersymmetry, Supergravity and Superstring   204   1999年
Junji Hisano, Mihoko M. Nojiri, Yasuhiro Shimizu, Minoru Tanaka
Phys.Rev. D60 (1999) 055008      1998年8月
The Super-Kamiokande atmospheric neutrino data suggest existence of the large
lepton-flavor violating (LFV) interaction in the higher energy scale. If the
minimal supersymmetric standard model is extended to have right-handed
neutrinos, the left-h...

The radiative correction to the supersymmetric relation and their measurement though the study of sneutrino or chargino productions are discussed.
Shingo Kiyoura, Mihoko M. Nojiri, Damien M. Pierce, Youichi Yamada
Phys.Rev. D58 (1998) 075002      1998年3月
Recently it has been realized that the production and decay processes of
charginos, neutralinos, and sleptons receive corrections which grow like log
m_squark for large m_squark. In this paper we calculate the chargino pair
production cross sectio...
Mihoko M. Nojiri
1997年8月
In the case with a large splitting between the squark and slepton masses, the
supersymmetric identities which enforce the equality of the gauge and gaugino
couplings are violated in the effective theory below the squark mass threshold.
We compute ...
Mihoko M. Nojiri, Damien M. Pierce, Youichi Yamada
Phys.Rev. D57 (1998) 1539-1552      1997年7月
We investigate an important radiative correction to the slepton and chargino
production processes. We consider a supersymmetric spectrum with a large
splitting between the squark and slepton masses. In this case, in the effective
theory below the ...
DREES M, NOJIRI M M, ROY D P, YAMADA Y
Physical Review D5   56(1) 276-290   1997年
Mihoko M. Nojiri, Keisuke Fujii, Toshifumi Tsukamoto
Phys.Rev. D54 (1996) 6756-6776      1996年6月
Sleptons can easily be found at future linear e+e- colliders if kinematically
accessible. Measurements of their masses and decay distributions would then
determine MSSM parameters. This paper presents a detailed MC study of the
production and deca...
Keisuke Fujii, Mihoko M. Nojiri, Toshifumi Tsukamoto
Prog.Theor.Phys.Suppl. 123 (1996) 203-212      1995年11月
The lighter scalar tau lepton may be the lightest scalar lepton and
therefore would be found earlier in future collider experiments. We point out
the impact of the measurement of the mass and the mixing angle of to
discriminate the mo...
Mihoko M. Nojiri
1995年4月
Study of the production and decay of scalar tau lepton () at future
colliders helps to determine the value of through the
measurement of the polarization of lepton that arises from decay.
Key maps of the param...
BORZUMATI F M, DREES M, NOJIRI M M
Physical Review D   51(2) 341-347   1995年
Mihoko M. Nojiri
Phys.Rev. D51 (1995) 6281-6291      1994年12月
The lepton arising from the scalar tau () decay is naturally
polarized. depends on the left--right mixing of the and the
gaugino--higgsino mixing of the neutralino. The polarization could be
measured from the ener...
Francesca M. Borzumati, Manuel Drees, Mihoko M. Nojiri
Phys.Rev. D51 (1995) 341-347      1994年6月
We point out that combinations of parameters that predict large counting
rates in experiments searching for supersymmetric dark matter often tend to
predict a very large branching ratio for the inclusive decay \bsg. The recent
measurement of this...

BAER H, DREES M, KAO C, NOJIRI M, TATA X
Phys. Rev. D   50(3 Pt 2) 2148-2163   1994年
DREES M, NOJIRI M M
Phys Rov D   49(9) 4595-4616   1994年
BAER H, DREES M, KAO C, NOJIRI M, TATA X
Phys. Rev. D   50(3 Pt 2) 2148-2163   1994年
DREES M, NOJIRI M M
Phys Rov D   49(9) 4595-4616   1994年
Physical Review Letter   72(15) 2324   1994年

## 書籍等出版物

 素粒子物理学堺井 義秀, 山田 憲和, 野尻 美保子共立出版   2012年   ISBN:9784320034846