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Y Obayashi

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Articles 58
Citations 188
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Recent Articles
1.
Abe K, Hayato Y, Iida T, Iyogi K, Kameda J, Koshio Y, et al.
Phys Rev Lett . 2014 Oct; 113(12):121802. PMID: 25279622
We present the results of searches for nucleon decay via n→ν[over ¯]π0 and p→ν[over ¯]π+ using data from a combined 172.8  kt·yr exposure of Super-Kamiokande-I,-II, and-III. We set lower limits...
2.
Litos M, Abe K, Hayato Y, Iida T, Ikeda M, Iyogi K, et al.
Phys Rev Lett . 2014 Apr; 112(13):131803. PMID: 24745406
A search for the dinucleon decay pp → K+ K+ has been performed using 91.6  kton·yr data from Super-Kamiokande-I. This decay provides a sensitive probe of the R-parity-violating parameter λ112''....
3.
Liu Y, Zhang Y, Cho Y, Obayashi Y, Arai A, Tamashiro H
J Affect Disord . 2013 Jul; 151(1):325-30. PMID: 23830001
Background: The effects of socio-economic factors on suicide were gender-dependent. Japanese suicide mortality gender ratio (male: female) had gradually increased during the twentieth century. Methods: With the data covering 1947-2010...
4.
Abe K, Hayato Y, Iida T, Iyogi K, Kameda J, Koshio Y, et al.
Phys Rev Lett . 2013 May; 110(18):181802. PMID: 23683190
Super-Kamiokande atmospheric neutrino data were fit with an unbinned maximum likelihood method to search for the appearance of tau leptons resulting from the interactions of oscillation-generated tau neutrinos in the...
5.
Gamage C, Koizumi N, Perera A, Muto M, Nwafor-Okoli C, Ranasinghe S, et al.
Transbound Emerg Dis . 2012 Sep; 61(1):91-6. PMID: 22998409
Leptospirosis is a zoonotic disease of global importance and one of the notifiable diseases in Sri Lanka. Recent studies on human leptospirosis have suggested that the cattle could be one...
6.
Abe K, Hayato Y, Iida T, Ikeda M, Iyogi K, Kameda J, et al.
Phys Rev Lett . 2012 Jan; 107(24):241801. PMID: 22242990
We present a search for differences in the oscillations of antineutrinos and neutrinos in the Super-Kamiokande-I, -II, and -III atmospheric neutrino sample. Under a two-flavor disappearance model with separate mixing...
7.
Abe K, Abgrall N, Ajima Y, Aihara H, Albert J, Andreopoulos C, et al.
Phys Rev Lett . 2011 Aug; 107(4):041801. PMID: 21866992
The T2K experiment observes indications of ν(μ) → ν(e) appearance in data accumulated with 1.43×10(20) protons on target. Six events pass all selection criteria at the far detector. In a...
8.
Obayashi Y, Cho C, Sawada T, Kuchiki G, Ota S, Kawasaki J
Bull World Health Organ . 2010 Jul; 20(6):1165-74. PMID: 20604052
The authors describe experiments which were carried out to determine the effect on the allergenic potency of dried glutamate BCG vaccine and dried sucrose BCG vaccine of storage at high...
9.
Obayashi Y, Sawada T, Kuchiki G, Cho C, Kawasaki J, Ota S
Bull World Health Organ . 2010 Jul; 20(6):1151-64. PMID: 20604051
The authors describe two experiments which were carried out to determine whether, and to what extent, there is a correlation between the viability of BCG vaccine and the size of...
10.
Nishino H, Clark S, Abe K, Hayato Y, Iida T, Ikeda M, et al.
Phys Rev Lett . 2009 Apr; 102(14):141801. PMID: 19392425
We have searched for proton decays via p-->e;{+}pi;{0} and p-->micro;{+}pi;{0} using data from a 91.7 kt.yr exposure of Super-Kamiokande-I and a 49.2 kt.yr exposure of Super-Kamiokande-II. No candidate events were...