Search Results - "Yokoya, Hiroshi"

Bounds on the mass of doubly charged Higgs bosons in the same-sign diboson decay scenario by Kanemura, Shinya, Kikuchi, Mariko, Yagyu, Kei, Yokoya, Hiroshi

“…A direct search for doubly charged Higgs bosons H super(+ or -+ or -) is one of the most important probes in the Higgs triplet model, which is motivated by…”
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First constraint on the mass of doubly-charged Higgs bosons in the same-sign diboson decay scenario at the LHC by Kanemura, Shinya, Yagyu, Kei, Yokoya, Hiroshi

“…When the doubly-charged Higgs bosons H±± mainly decay into the same-sign dilepton, a lower bound on the mass is around 400 GeV by the current LHC data. On the…”
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Top-quark mass from the diphoton mass spectrum by Kawabata, Sayaka, Yokoya, Hiroshi

“…We calculate the g g → γ γ amplitude by including the t t ¯ bound-state effects near their mass threshold. In terms of the non-relativistic expansion of the…”
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Discriminating leptonic Yukawa interactions with doubly charged scalar at the ILC by Nomura, Takaaki, Okada, Hiroshi, Yokoya, Hiroshi

“…We explore discrimination of two types of leptonic Yukawa interactions associated with Higgs triplet, L¯LcΔLL, and with SU(2) singlet doubly charged scalar,…”
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Photon pair production in gluon fusion: top quark effects at NLO with threshold matching by Chen, Long, Heinrich, Gudrun, Jahn, Stephan, Jones, Stephen P., Kerner, Matthias, Schlenk, Johannes, Yokoya, Hiroshi

“…A bstract We present a calculation of the NLO QCD corrections to the loop-induced production of a photon pair through gluon fusion, including massive top…”
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Reconstruction of inert doublet scalars at the international linear collider by Aoki, Mayumi, Kanemura, Shinya, Yokoya, Hiroshi

“…We study collider signatures for extra scalar bosons in the inert doublet model at the international linear collider (ILC). The inert doublet model is a simple…”
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Probing the CP properties of top Yukawa coupling at an e+e− collider by Hagiwara, Kaoru, Yokoya, Hiroshi, Zheng, Ya-Juan

“…A bstract We study consequences of CP violation in the h t t ¯ Yukawa coupling through the process e + e − → h 125 t t ¯ . The helicity amplitudes are…”
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Weight function method for precise determination of top quark mass at Large Hadron Collider by Kawabata, Sayaka, Shimizu, Yasuhiro, Sumino, Yukinari, Yokoya, Hiroshi

“…We propose a new method to measure a theoretically well-defined top quark mass at the LHC. This method is based on the “weight function method,” which we…”
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Complementarity in direct searches for additional Higgs bosons at the LHC and the International Linear Collider by Kanemura, Shinya, Yokoya, Hiroshi, Zheng, Ya-Juan

“…We discuss complementarity of discovery reaches of heavier neutral Higgs bosons and charged Higgs bosons at the LHC and the International Linear Collider (ILC)…”
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Searches for additional Higgs bosons in multi-top-quarks events at the LHC and the International Linear Collider by Kanemura, Shinya, Yokoya, Hiroshi, Zheng, Ya-Juan

“…We study direct searches of additional Higgs bosons in multi-top-quarks events at the LHC Run-II, its luminosity upgraded version with 3000 fb−1, and the…”
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Bound-state effects on top quark production at hadron colliders by Hagiwara, Kaoru, Sumino, Yukinari, Yokoya, Hiroshi

“…We study bound-state effects on the tt¯ production cross section in the threshold region at hadron colliders. The bound-state effects are important…”
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Light dark matter showering under broken dark U(1) — revisited by Chen, Junmou, Ko, Pyungwon, Li, Hsiang-nan, Li, Jinmian, Yokoya, Hiroshi

“…A bstract It was proposed recently that different chiralities of the dark matter (DM) fermion under a broken dark U(1) gauge group can lead to distinguishable…”
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Family gauge boson production at the LHC by Koide, Yoshio, Yamanaka, Masato, Yokoya, Hiroshi

“…Family gauge boson production at the LHC is investigated according to a U(3) family gauge model with twisted family number assignment. In the model we study, a…”
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Discrimination of models including doubly charged scalar bosons by using tau lepton decay distributions by Sugiyama, Hiroaki, Tsumura, Koji, Yokoya, Hiroshi

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Bound-state effects on kinematical distributions of top quarks at hadron colliders by Sumino, Yukinari, Yokoya, Hiroshi

“…First we present a theoretical framework to compute the fully differential cross sections for the top-quark productions and their subsequent decays at hadron…”
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Color-octet scalars and potentially large CP violation at the LHC by He, Xiao-Gang, Valencia, German, Yokoya, Hiroshi

“…A bstract We consider the phenomenology of CP violation in a color-octet extended scalar sector for t production and decay at the LHC. In particular we study…”
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Boost-invariant leptonic observables and reconstruction of parent particle mass by Kawabata, Sayaka, Shimizu, Yasuhiro, Sumino, Yukinari, Yokoya, Hiroshi

“…We propose a class of observables constructed from lepton energy distribution, which are independent of the velocity of the parent particle if it is scalar or…”
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Colored scalars and the CDF W+dijet excess by Enkhbat, Tsedenbaljir, He, Xiao-Gang, Mimura, Yukihiro, Yokoya, Hiroshi

“…A bstract The recent data on W  + dijet excess reported by CDF may be interpreted as the associated production of a W and a new particle of mass about 150 GeV…”
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Search for Higgs portal DM at the ILC by Ko, P., Yokoya, Hiroshi

“…A bstract Higgs portal dark matter (DM) models are simple interesting and viable DM models. There are three types of the models depending on the DM spin:…”
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Erratum to: Bound-state effects on kinematical distributions of top quarks at hadron colliders by Sumino, Yukinari, Yokoya, Hiroshi

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