Yuichiro Nakai, Harvard University
Deconstruction, Holography and Emergent Supersymmetry
Meeting room 1, Kenkyu honkan 1F In this talk, we discuss a gauge theory in a 5D warped space via the dimensional deconstruction that a higher dimensional gauge theory is constructed from a moose of 4D gauge groups. By the AdS/CFT
In this talk, we discuss a gauge theory in a 5D warped space via the dimensional deconstruction that a higher dimensional gauge theory is constructed from a moose of 4D gauge groups. By the AdS/CFT
correspondence, a 5D warped gauge theory is dual to a 4D conformal field theory (CFT) with a global symmetry. As far as physics of the gauge theory, we obtain the one-to-one correspondence between each component of a moose of gauge groups and that of a CFT. We formulate a supersymmetric extension
of deconstruction and explore the framework of natural supersymmetry in a 5D warped space – the supersymmetric Randall-Sundrum model with the IR-brane localized Higgs and bulk fermions – via the gauge moose. In this model, a supersymmetry breaking source is located at the end of the moose corresponding to the UV brane and the first two generations of squarks are decoupled. With left-right gauge symmetries in the bulk of the moose, we demonstrate realization of accidental or emergent supersymmetry of the Higgs sector in comparison with the proposed “Moose/CFT correspondence.”
Kohsaku Tobioka, Tel Aviv U., Weizmann, KEK
Probing Higgs-charm coupling, for current and future LHC
Meeting room 1, Kenkyu honkan 1F
We introduce four different types of datadriven analyses that constrain the size of the Higgscharm Yukawa coupling: (i) recasting the vectorboson associated, Vh, analyses that search for bottompair final state; (ii) the direct measurement of the total width; (iii) the search to h> J/\psi\gamma; (iv) a global fit to the Higgs signal strengths. A comparison with t\bar{t}h data allows us to show that the Higgs does not couple to quarks in a universal way. Finally, we demonstrate how the experimental collaborations can further improve our direct bound (i) using charmtagging.
Khaiming Wong, Universiti Sains Malyasia
Monopole-Antimonopole System and Vortex-ring Configurations in the Weinberg-Salam Model
Seminar room, Kenkyu honkan 3F The Georgi-Glashow model is famous for the huge families of magnetic monopole solutions, the most important of all solution is the well-known ‘t Hooft-Polyakov monopole. For the more realistic Weinberg Salam model, Nambu has demonstrated the existence of a rotating dumb-bell made of monopole and antimonopoly, connected by a flux string of neutral field.
The Georgi-Glashow model is famous for the huge families of magnetic monopole solutions, the most important of all solution is the well-known ‘t Hooft-Polyakov monopole. For the more realistic Weinberg Salam model, Nambu has demonstrated the existence of a rotating dumb-bell made of monopole and antimonopoly, connected by a flux string of neutral field.
Some years later, Cho and Maison showed the Georgi-Glashow and Weinberg-Salam model possesses exactly the same topological structure, and constructed a spherically symmetric Weinberg-Salam monopole, namely the Cho-Maison monopole. In this work we solve the Weinberg-Salam equations of motion for numerical solutions which are generalization of Nambu’s electroweak monopole and the Cho-Maison monopole. These solutions correspond to series of magnetic poles with alternating sign aligned along the z-axis, which include the monopole-antimonopole chain, monopole-antimonoploe pair, and vortex ring.
Tao Liu, The Hong Kong University of Science and Technology
New Strategies on Higgs measure measurements at pp colliders: from LHC to a 100 TeV machine
Meeting room 1, Kenkyu honkan 1F
In this talk, I will present several new Strategies on the measurements of Higgs physics, mainly including Higgs self-coupling and new Higgs resonances, at LHC and A future 100 TeV machine.
永江知文, 京都大学理学研究科
[JAEA先端研, KEK理論センターJ-PARC分室共催セミナー] S-2Sスペクトロメーターを用いたマルチ・ストレンジネス多体系の精密分光
JAEA先端基礎交流棟3階302号室 J-PARC E05実験では、(K-,K+)反応を用いてストレンジネス-2のバリオン多体系であるグザイ・ハイパー核の束縛状態を、エネルギースペクトル上でピークとして観測することを目標としています。
J-PARC E05実験では、(K-,K+)反応を用いてストレンジネス-2のバリオン多体系であるグザイ・ハイパー核の束縛状態を、エネルギースペクトル上でピークとして観測することを目標としています。
そのピーク位置から束縛エネルギーを求め、ピークのエネルギー幅からΞN-ΛΛの結合の強さの情報を引き出します。この測定のため、現在、立体角60msr、運動量分解能5×10^-4の性能を目指すS-2Sスペクトロメーターと呼ぶ新しい磁気スペクトロメーター系を建設中です。
本セミナーでは、その建設状況とこれを使った実験プログラムについて紹介します。
Kohei Kamada, Ecole Polytechnique Federale de Lausanne
Inflationary cosmology and Standard Model Higgs
Meeting Room 1, Kenkyu Honkan 1F
After the discovery of Higgs particle at LHC, we can now say that the Standard Model of particle physics (SM) is completed. However, we cannot still explain the Universe with the SM as it is. In this talk, I will focus on inflation , which is now an (almost) indispensable ingredient in the modern cosmology, and explain the possible ways to drive inflation by the SM Higgs field itself. In particular, I will explain the self consistency of these scenarios and the relation to the electroweak vacuum stability. If time permitted, I will also talk about the electroweak vacuum stability during and after inflation in the case where inflation is driven by other sector than the SM.
David Kubiznak, Perimeter Institute
P-V criticality of AdS black holes
Seminar room, Kenkyu honkan 3F
Treating the cosmological constant as a thermodynamic pressure and its conjugate quantity as thermodynamic volume, we reconsider the critical behavior of AdS black holes. We complete the analogy between the thermodynamics of charged AdS black holes and that of the liquid/gas system. The corresponding critical point occurs at a point of divergence of specific heat at constant pressure and is characterized by critical exponents that coincide with those of the Van der Waals fluid. For more complicated black holes, phenomena like reentrant phase transitions, triple points, and even that of the isolated critical points are observed.
Koutarou Kyutoku, RIKEN iTHES
Dynamical mass ejection from black hole-neutron star binaries
Seminar room, Kenkyu honkan 3F In recent years, mass ejection from compact binary coalescences has been getting a lot more attention. Neutron-rich material ejected from neutron stars during such a coalescence event are increasingly recognized as the most promising site of the rapid-process (r-process) nucleosynthesis. Mass ejection will also be the primary agent driving electromagnetic radiation from compact binary mergers, or electromagnetic counterparts to gravitational waves.
In recent years, mass ejection from compact binary coalescences has been getting a lot more attention. Neutron-rich material ejected from neutron stars during such a coalescence event are increasingly recognized as the most promising site of the rapid-process (r-process) nucleosynthesis. Mass ejection will also be the primary agent driving electromagnetic radiation from compact binary mergers, or electromagnetic counterparts to gravitational waves.
Simultaneous detection of electromagnetic counterparts with gravitational waves is eagerly desired, particularly for accurate source localization. Because mass ejection from black hole-neutorn star binaries are violent phenomena involving disruption of neutron stars, numerical relativity is the only reliable approach for theoretical investigation. In this talk, we present our latest results for dynamical mass ejection from the black hole-neutron star binary merger obtained by numerical-relativity simulations.
We also discuss possible electromagnetic counterparts from the anisotropic dynamical ejecta from black hole-neutron star binaries.
Chong-Sun Chu, National Tsing Hua University, Taiwan
On the gravitational loop effects on the cosmological constant
Meeting Room 1, Kenkyu Honkan 1F
In this talk I will consider a 4 dimensional model where the infrared effect at one loop of the graviton provides a screening on the cosmological constant
Michael E. Peskin, SLAC
Secrets of the Higgs Boson
Meeting room 1, Kenkyu honkan 1F
