ƒZƒ~ƒi[î•ñi2019”N“x)

“úŽž : 2019”N7ŒŽ23“ú(‰Î) 16:30`
êŠ : F205i—Šw•”F“ ‘æ4u‹`Žºj
‘è–Ú : Nonanomalous R symmetry in supersymmetric @@@@unified theories of quarks and leptons
u‰‰ŽÒ : ŠÛ Ml Ž (‘åãŽs—§‘åŠw)

ŠT—v : A discrete R-symmetry often appears as an exact gauge symmetry in the low energy effective theory of superstring theories. We search for such discrete R-symmetries from a phenomenological point of view and find that Z_{9R} and Z_{18R} are candidates of the nonanomalous R-symmetry in the case of the minimal supersymmetric standard model. We also find Z_{4R} and Z_{20R} in the case that quarks and leptons are embedded in the SU(5) GUT multiplets. Interesting is that in the latter case all the solutions predict some extra matter multiplets and we find that the simplest choice is to take a pair of {\bf 5} and {\bf 5}^* of SU(5)_{GUT} whose mass is of order the SUSY breaking scale \sim 1 TeV. We emphasize that the presence of such extra matters is testable in future collider experiments.


“úŽž : 2019”N7ŒŽ16“ú(‰Î) 16:30`
êŠ : F205i—Šw•”F“ ‘æ4u‹`Žºj
‘è–Ú : Lepton-flavor violation via four-Fermi contact interactions at e+e- linear collider
u‰‰ŽÒ : úÞ Šî“N Ž (‚¨’ƒ‚̐…—Žq‘åŠw)

ŠT—v : ƒŒƒvƒgƒ“EƒtƒŒ[ƒo[‚Ì”j‚êiLFV) ‚Í•W€–ÍŒ^‚ð‰z‚¦‚镨—‚É‚æ‚Á‚Ä‹N‚±‚肤‚é d—v‚ȃVƒOƒiƒ‹‚̈ê‚‚ł ‚éBLFV‘ŠŒÝì—p‚ð”}‰î‚·‚éV—±Žq‚ÌŽ¿—ʃXƒP[ƒ‹‚ª ƒRƒ‰ƒCƒ_[ŽÀŒ±‚ÅŽÀŒ»‚³‚ê‚éƒGƒlƒ‹ƒM[ƒXƒP[ƒ‹‚æ‚è‚à‘å‚«‚¢ê‡A‚»‚ÌŠñ—^‚Í4‘Ì ƒtƒFƒ‹ƒ~ƒIƒ“ÚG‘ŠŒÝì—p‚É‚æ‚Á‚Ä‹Lq‚³‚ê‚éB–{u‰‰‚ł́ALFV‚Ì”j‚ê‚ð—^‚¦‚é –ÍŒ^‚̏ڍׂɂæ‚ç‚È‚¢A’áƒGƒlƒ‹ƒM[—LŒø—˜_‚Æ‚µ‚Ä‚Ì4‘̃tƒFƒ‹ƒ~ƒIƒ“ÚG‘ŠŒÝ ì—p‚ɑ΂·‚éA‚ƒGƒlƒ‹ƒM[ƒRƒ‰ƒCƒ_[ŽÀŒ±‚Å‚Ì’Tõ‰Â”\«‚ɂ‚¢‚ďЉ‚éB ]—ˆALFV‘ŠŒÝì—p‚Ì’Tõ‚ÍBƒtƒ@ƒNƒgƒŠ[ŽÀŒ±‚É‘ã•\‚³‚ê‚éA‚¸“xŽÀŒ±‚É ‚¨‚¢‚Ä‚È‚³‚ê‚Ä‚«‚½‚ªA–{u‰‰‚ł͍‘ÛƒŠƒjƒAƒRƒ‰ƒCƒ_[Œv‰æiILCj‚ð‘z’肵A‚»‚± ‚ÅŠú‘Ò‚³‚ê‚éLFV’Tõ‚ÆBƒtƒ@ƒNƒgƒŠ[‚Å‚Ì’Tõ‚ð”äŠrEŒŸ“¢‚µ‚½Œ‹‰Ê‚ð‹c˜_‚·‚éB


“úŽž : 2019”N6ŒŽ25“ú(‰Î) 16:30`
êŠ : F205i—Šw•”F“ ‘æ4u‹`Žºj
‘è–Ú : (Šg’£)ƒqƒbƒOƒXê—LŒø—˜_‚Æ‚»‚̉ž—p
u‰‰ŽÒ : ’·ˆä@—Ɂ@Ž (“Œ‹ž‘åŠw)

ŠT—v : –{u‰‰‚ł́A‘Ώ̐«‚ÌŽ©”­“I”j‚ꌻÛ‚ð‹Lq‚·‚é"”ñüŒ`ƒVƒOƒ}–ÍŒ^"‚Ì \¬•û–@‚ð‰ž—p‚µA“dŽã‘Ώ̐«‚ÌŽ©”­“I”j‚ꌻÛ‚ð‹Lq‚·‚é—LŒø—˜_ (ƒqƒbƒOƒXê—LŒø—˜_)‚ð\¬‚·‚éB‚±‚Ì—LŒø—˜_‚ł́AƒqƒbƒOƒX—±Žq‚Ì‘ŠŒÝ ì—p‚̍\‘¢‚ª”ñüŒ`ƒVƒOƒ}–ÍŒ^‚Ì“à•”‹óŠÔ‚̍\‘¢(Šô‰½‚â‘Ώ̐«)‚É‚æ‚Á‚Ä “Á’¥•t‚¯‚ç‚êA‚»‚̍\‘¢‚̏ڍׂ͓dŽãƒQ[ƒWƒ{ƒ\ƒ“‚âƒqƒbƒOƒX—±Žq‚̐¸–§‘ª’è ŽÀŒ±‚É‚æ‚Á‚ÄŒˆ’è‚·‚邱‚Æ‚ª‚Å‚«‚éB–{u‰‰‚ł́A‚Ü‚¸A125GeVƒqƒbƒOƒX—±Žq ‚ÉŠÖ‚·‚éŽÀŒ±Œ‹‰Ê‚âALEPŽÀŒ±‚É‚¨‚¯‚é“dŽã¸–§‘ª’è‚ÌŒ‹‰Ê‚ðU‚è•Ô‚èA ‚»‚ê‚炪•W€–ÍŒ^‚ð’´‚¦‚éAŠg’£ƒqƒbƒOƒXƒZƒNƒ^[‚ɑ΂µ‚Ăǂ̂悤‚Ȑ§ŒÀ‚ð—^‚¦ ‚Ä‚¢‚é‚©‚𐮗‚·‚éB‚Ü‚½A‚»‚ê‚ç‚ÌŽÀŒ±Ž–ŽÀ‚𓥂܂¦A‚±‚ê‚Ü‚Å‚ÌŽÀŒ±Œ‹‰Ê‚Æ –³–µ‚‚©‚A«—ˆŽÀŒ±‚É‚æ‚Á‚ÄŒŸØ‰Â”\‚ÈŠg’£ƒqƒbƒOƒXƒZƒNƒ^[‚̉”\«‚É ‚‚¢‚Ä‹c˜_‚·‚éB(ŽQl:arXiv:1904.07618)


“úŽž : 2019”N6ŒŽ18“ú(‰Î) 16:30`
êŠ : F205i—Šw•”F“ ‘æ4u‹`Žºj
‘è–Ú : How to "cool down" Ising model on 2d dynamical triangulations
u‰‰ŽÒ : ²“¡—E‹MŽ (–¼ŒÃ‰®‘å)

ŠT—v : The Ising model on 2d dynamical triangulations was originally introduced by Kazakov in 1986, which is a statistical system including gravitational degrees of freedom. This system is known to be critical at the finite temperature and the continuum theory defined around the critical point is the 2d gravity minimally coupled to fermions. We introduce an external parameter to the system, aiming at observing the quantum critical behavior. Tuning the parameter to a certain value the critical temperature reaches absolute zero and the resulting continuum theory at the zero temperature is NOT the 2d gravity minimally coupled to fermions. As it turns out, physics at the zero-temperature may differ depending on the "cool down speed". The talk will be based on the work with Tomo Tanaka (Phys.Rev. D98 (2018) no.2, 026026) and the work in progress with Jan Ambjorn.


“úŽž : 2019”N6ŒŽ4“ú(‰Î) 16:30`
êŠ : F205i—Šw•”F“ ‘æ4u‹`Žºj
‘è–Ú : d—Í”gŠÏ‘ªŽÀŒ±‹y‚щÁ‘¬ŠíŽÀŒ±‚É‚æ‚éŠg’£ƒqƒbƒOƒX–ÍŒ^‚ÌŒŸØ
u‰‰ŽÒ :’[–썎ÆŽ(‘åã‘åŠw)

ŠT—v : ‰Á‘¬ŠíŽÀŒ±‚É‚æ‚èƒqƒbƒOƒX—±Žq‚ª”­Œ©‚³‚ꂽŽ–‚ŁA•W€–ÍŒ^‚Å—\Œ¾‚³‚ê‚Ä‚¢‚½‘f—±Žq‚ª ‘S‚Ä”­Œ©‚³‚ꂽ‚ªA•W€–ÍŒ^‚̘g“à‚Åà–¾‚Å‚«‚È‚¢Œ»Û‚ªŠù‚ÉŠm”F‚³‚ê‚Ä‚¨‚èA–ÍŒ^‚Ì Šg’£‚ª•K—v‚Å‚ ‚éBŠg’£–ÍŒ^‚̈ê‚‚Ƃµ‚āA–¢‚¾‚É•s–¾—Ä‚Å‚ ‚éƒqƒbƒOƒXƒZƒNƒ^[‚ðŠg’£‚µ‚½A Šg’£ƒqƒbƒOƒX–ÍŒ^‚ª‚ ‚éBƒqƒbƒOƒXŒ‹‡‚͏«—ˆ“I‚ɉÁ‘¬ŠíŽÀŒ±‚É‚æ‚萸–§‚É‘ª’肳‚ê ‚é‚½‚߁A ‚±‚ÌŠg’£–ÍŒ^‚ÍŒŸØ‚Å‚«‚é‰Â”\«‚ª‚ ‚éBˆê•û‚ŁA«—ˆ‚̏d—Í”gŠÏ‘ªŽÀŒ±‚É‚æ‚é“dŽã ‘Š“]ˆÚ‚ÉŠÖ‚·‚éd—Í”g‚Ì‘ª’è‚Å‚àAŠg’£ƒqƒbƒOƒX–ÍŒ^‚ÉŠÜ‚Ü‚ê‚éƒpƒ‰ƒ[ƒ^‚̏î•ñ‚𔲂« o‚¹‚鎖‚ª’m‚ç‚ê‚Ä‚¢‚éB–{u‰‰‚Å‚Í•W€–ÍŒ^‚ɐV‚½‚ɃXƒJƒ‰[ê‚ð‰Á‚¦‚½Šg’£ƒqƒbƒOƒX–ÍŒ^‚É ’–Ú‚µA‰Á‘¬ŠíŽÀŒ±‚Əd—Í”gŠÏ‘ªŽÀŒ±‚É‚æ‚é‘Š•â“I‚È–ÍŒ^‚ÌŒŸØ‰Â”\«‚ɂ‚¢‚Ä‹c˜_‚·‚éB


“úŽž : 2019”N5ŒŽ21“ú(‰Î) 16:30`
êŠ : F203i—Šw•”F“ ‘æ2u‹`Žºj
‘è–Ú : ƒf[ƒ^‰ðÍ‚̐”Šw“IŽè–@‚ª•`‚­³€ƒeƒ“ƒ\ƒ‹–ÍŒ^‚ÌŽž‹óŠT”O
u‰‰ŽÒ :ù‘q’¼Ž÷Ž(ŠîŒ¤)

ŠT—v : ³€ƒeƒ“ƒ\ƒ‹–ÍŒ^‚̓eƒ“ƒ\ƒ‹‚ð”zˆÊ•Ï”‚Æ‚µA‚»‚Ì”g“®ŠÖ”‚̓eƒ“ƒ\ƒ‹‚Ì’l‚ªƒŠ[ŒQ‚̑Ώ̐«‚ðŽ‚Â‚Æ‚±‚ë‚Ńs[ƒN‚ðŽ‚Â‚Æ‚¢‚¤‹»–¡[‚¢«Ž¿‚ðŽ‚ÂB³€ƒeƒ“ƒ\ƒ‹–ÍŒ^‚ð—ÊŽqd—Í‚Ì–ÍŒ^‚Æ‚µ‚ĉðŽß‚µA‚»‚ê‚ç‚̃s[ƒN‚ðƒŠ[ŒQ‚̑Ώ̐«‚ðŽ‚ÂŽž‹ó‚ªŠm—¦“I‚ɍD‚Ü‚ê‚é‚Æ‚¢‚¤•¨—‚Æ‚µ‚ĉðŽß‚·‚é‚ɂ́Aƒeƒ“ƒ\ƒ‹‚Æ‹óŠÔ‚Ƃ̑ΉžŠÖŒW‚ð\¬‚·‚邱‚Æ‚ª•K—v‚Å‚ ‚éB‚±‚̍u‰‰‚ł́Aƒf[ƒ^‰ðÍ‚̐”Šw“IŽè–@‚ðŽg‚Á‚āAŽÀ‘Ώ̂RŠKƒeƒ“ƒ\ƒ‹‚Æ‹——£Œv—Ê‚ðŽ‚Â‹óŠÔ‚Ƃ̑ΉžŠÖŒW‚ð\¬‚·‚éB‹ï‘Ì“I‚ɂ́Aƒeƒ“ƒ\ƒ‹‚̃‰ƒ“ƒN•ª‰ðiCP•ª‰ðj‚É‚æ‚è“_‚ƋǏŠˆÊ‘Š‚ð’è‹`‚µ‚ĈʑŠ‹óŠÔ‚ð‹‚ßA‚³‚ç‚É‚»‚Ì‹óŠÔã‚̃‰ƒvƒ‰ƒXì—p‘f‚ð’è‹`‚µ‚Ä‹——£‚ðŒˆ’è‚·‚éB‚±‚Ì•û–@‚𐳏€ƒeƒ“ƒ\ƒ‹–ÍŒ^‚ɉž—p‚µAˆê—l‹…–ʁ{ŽžŠÔ‚Æ‚¢‚¤Ý’è‚É‚¨‚¢‚āA³€ƒeƒ“ƒ\ƒ‹–ÍŒ^‚̃eƒ“ƒ\ƒ‹‚̌ÓT“I‰^“®•û’öŽ®‚ªAƒXƒJƒ‰[ê‚𔺂¤ˆê”Ê‘Š‘Θ_‚̉^“®•û’öŽ®‚ƈê’v‚·‚邱‚Æ‚ð‚Ý‚éB


“úŽž : 2019”N5ŒŽ14“ú(‰Î) 16:30`
êŠ : F203i—Šw•”F“ ‘æ2u‹`Žºj
‘è–Ú : Search for charged lepton flavor violation using nucleus
u‰‰ŽÒ : ŽR’†^lŽ(NITEP)

ŠT—v : ‰×“dƒŒƒvƒgƒ“ƒtƒŒ[ƒo[‚Ì”j‚êicharged lepton flavor violation; CLFVj ‚Í•W€—˜_‚ð’´‚¦‚éV•¨—‚̏؋’‚Æ‚È‚éBCLFV’Tõ‚͐V—±Žq‚𒼐ڊm”F‚Å‚« ‚é‚à‚Ì‚Å‚Í‚È‚¢B‚¢‚­‚‚à‚ÌCLFV‰ß’ö‚ÌŒŸØ‚ð‘g‚ݍ‡‚킹AV–ÍŒ^‚ÌŽp‚ð Ø‚èo‚·•K—v‚ª‚ ‚éBŒ¾‚¢Š·‚¦‚é‚ƁAV‚µ‚¢CLFV‰ß’ö‚ªlˆÄ‚³‚ê‚邱‚ƂŁA V•¨—‚ð‚æ‚荂¸“x‚ɁA‚»‚µ‚āA‚±‚ê‚܂łƂ͈قȂéŠp“x‚©‚猟Ø‚·‚邱‚Æ ‚ª‚Å‚«‚éB–{u‰‰‚ł́AŒ´ŽqŠj‚ð—˜—p‚µ‚½CLFV’Tõ‚É’–Ú‚·‚éB‚Í‚¶‚߂ɁA —˜_ŒvŽZ‚Ì•s’萫‚ðŠÜ‚߁Aƒ~ƒ…[ƒIƒ“-“dŽq“]Š·‚ªŒ»ÝA‚»‚µ‚āA‹ß–¢—ˆ‚É ‚à‚½‚ç‚·V•¨—ŒŸØ”\—Í‚ðŽ¦‚·BŽŸ‚ɁA‰äX‚ªlˆÄ‚µ‚½V‚½‚ÈCLFV‰ß’ö‚ð Ð‰î‚µACLFVŒŸØ‚ɑ΂·‚é‚»‚̐öÝ”\—Í‚ð˜_‚¶‚éBŽžŠÔ‚ª‹–‚¹‚΁Aƒ^ƒEƒtƒŒ [ƒo[”ñ•Û‘¶‘ŠŒÝì—p‚ÌŒŸØ‰ß’ö‚Æ‚µ‚Ä—L—ÍŽ‹‚³‚ê‚郌ƒvƒgƒ“-Œ´ŽqŠjŽU—‚É ‘΂·‚éd—v‚È‘f‰ß’ö‚Ì“±“üA‹y‚сAŽU—’f–ʐς̍‚¸“x’莮‰»‚ɂ‚¢‚Äà–¾‚·‚éB




ƒZƒ~ƒi[‚ÉŠÖ‚·‚邨–â‚¢‡‚킹‚Í ‹g‰ª(yoshioka_AT_sci.osaka-cu.ac.jp) ‚Ü‚Å‚²˜A—‚ð‚æ‚낵‚­‚¨Šè‚¢‚µ‚Ü‚·B i‚±‚±‚Å_AT_‚Í@‚Å’u‚«Š·‚¦‚Ä‚­‚¾‚³‚¢Bj


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