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45 papers · 1 filter
Hessenberg varieties and hyperplane arrangements
Takuro Abe, Tatsuya Horiguchi, Mikiya Masuda +2
Given a semisimple complex linear algebraic group and a lower ideal in positive roots of , three objects arise: the ideal arrangement , the regular nilpot…
Change point detection in autoregressive models with no moment assumptions
Fumiya Akashi, Holger Dette, Yan Liu
In this paper we consider the problem of detecting a change in the parameters of an autoregressive process, where the moments of the innovation process do not necessarily exist. An…
Measurements of top-quark pair to -boson cross-section ratios at TeV with the ATLAS detector
ATLAS Collaboration
Ratios of top-quark pair to -boson cross sections measured from proton--proton collisions at the LHC centre-of-mass energies of TeV, 8TeV, and 7TeV are presented by…
Measurement of the prompt pair production cross-section in collisions at TeV with the ATLAS detector
ATLAS Collaboration
The production of two prompt mesons, each with transverse momenta GeV and rapidity , is studied using a sample of proton-proton collisions at…
Dark matter physics, flavor physics and LHC constraints in the dark matter model with a bottom partner
Tomohiro Abe, Junichiro Kawamura, Shohei Okawa +1
In the scenario that a dark matter (DM) is a weakly interacting massive particle, there are many possibilities of the interactions with the Standard Model (SM) particles to achieve…
On a role of corotation radius in the low dynamical instability of differentially rotating stars
Shin'ichirou Yoshida, Motoyuki Saijo
We investigate the nature of so-called low dynamical instability in a differentially rotating star by focusing on the role played by the corotation radius of the unstable osc…