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Miyazaki, Y.,Aihara, H.,Arinstein, K.,Aulchenko, V.,Aushev, T.,Bakich, A.M.,Balagura, V.,Barberio, E.,Bay, A.,Belous, K.,Bhardwaj, V.,Bischofberger, M.,Bondar, A.,Brač,ko, M.,Browder, T.E.,Chang, North-Holland Pub. Co 2010 Physics letters. Section B Vol.682 No.4
<P><B>Abstract</B></P><P>We search for lepton flavor and lepton number violating <I>τ</I> decays into a lepton (ℓ=electron or muon) and two charged mesons (h,<SUP>h′</SUP>=<SUP>π±</SUP> or <SUP>K±</SUP>), <SUP>τ−</SUP>→<SUP>ℓ−</SUP><SUP>h+</SUP><SUP>h′−</SUP> and <SUP>τ−</SUP>→<SUP>ℓ+</SUP><SUP>h−</SUP><SUP>h′−</SUP>, using 671 fb<SUP>−1</SUP> of data collected with the Belle detector at the KEKB asymmetric-energy <SUP>e+</SUP><SUP>e−</SUP> collider. We obtain 90% C.L. upper limits on the branching fractions in the range (4.4–8.8)×<SUP>10−8</SUP> for τ→eh<SUP>h′</SUP>, and (3.3–16)×<SUP>10−8</SUP> for τ→μh<SUP>h′</SUP> processes. These results improve upon previously published upper limits by factors between 1.6 to 8.8.</P>
Measurement of Inclusive RadiativeB-Meson Decays with a Photon Energy Threshold of 1.7 GeV
Limosani, A.,Aihara, H.,Arinstein, K.,Aushev, T.,Bakich, A. M.,Balagura, V.,Barberio, E.,Bay, A.,Belous, K.,Bischofberger, M.,Bondar, A.,Bozek, A.,Brač,ko, M.,Browder, T. E.,Chang, P.,Chao, Y.,Ch American Physical Society 2009 Physical Review Letters Vol.103 No.24
<P>Using 605 fb(-1) of data collected at the Upsilon(4S) resonance we present a measurement of the inclusive radiative B-meson decay channel, B-->X(s)gamma. For the lower photon energy thresholds of 1.7, 1.8, 1.9, and 2.0 GeV, as defined in the rest frame of the B meson, we measure the partial branching fraction and the mean and variance of the photon energy spectrum. At the 1.7 GeV threshold we obtain the partial branching fraction BF(B-->X(s)}gamma)=(3.45+/-0.15+/-0.40)x10(-4), where the errors are statistical and systematic.</P>
Measurement of thee+e−→D0D*−π+cross section using initial-state radiation
Pakhlova, G.,Aihara, H.,Arinstein, K.,Aushev, T.,Bakich, A. M.,Balagura, V.,Barberio, E.,Bay, A.,Belous, K.,Bhardwaj, V.,Bischofberger, M.,Bondar, A.,Bozek, A.,Brač,ko, M.,Browder, T. E.,Chang, P American Physical Society 2009 PHYSICAL REVIEW D - Vol.80 No.9
Search for lepton-flavor-violating τ decays into a lepton and a vector meson
Belle Collaboration,Miyazaki, Y.,Aihara, H.,Arinstein, K.,Aulchenko, V.,Bakich, A.M.,Balagura, V.,Barberio, E.,Bay, A.,Belous, K.,Bhardwaj, V.,Bischofberger, M.,Bondar, A.,Bozek, A.,Bracko, M.,Browder North-Holland Pub. Co 2011 Physics letters: B Vol.699 No.4
We search for lepton-flavor-violating τ->@?V<SUP>0</SUP> decays, where @? is an electron or muon and V<SUP>0</SUP> is one of the vector mesons ρ<SUP>0</SUP>, φ, ω, K<SUP>@?0</SUP> and K@?<SUP>@?0</SUP>. We use 854 fb<SUP>-1</SUP> of data collected with the Belle detector at the KEKB asymmetric-energy e<SUP>+</SUP>e<SUP>-</SUP> collider. No evidence for a signal is found in any decay mode, and we obtain 90% confidence level upper limits on the individual branching fractions in the range (1.2-8.4)x10<SUP>-8</SUP>8.
Measurement ofD+→KS0K+andDs+→KS0π+branching ratios
Won, E.,Ko, B. R.,Aihara, H.,Arinstein, K.,Aulchenko, V.,Aushev, T.,Bakich, A. M.,Balagura, V.,Barberio, E.,Bay, A.,Belous, K.,Bhardwaj, V.,Bischofberger, M.,Bondar, A.,Bozek, A.,Brač,ko, M.,Brow American Physical Society 2009 PHYSICAL REVIEW D - Vol.80 No.11
Measurement ofe+e−→Ds(*)+Ds(*)−cross sections near threshold using initial-state radiation
Pakhlova, G.,Adachi, I.,Aihara, H.,Arinstein, K.,Aushev, T.,Aziz, T.,Bakich, A. M.,Balagura, V.,Barberio, E.,Bay, A.,Belous, K.,Bhardwaj, V.,Bhuyan, B.,Bondar, A.,Bozek, A.,Brač,ko, M.,Browder, T American Physical Society 2011 PHYSICAL REVIEW D - Vol.83 No.1
Measurement of the branching fraction for the decayΥ(4S)→Υ(1S)π+π−
Sokolov, A.,Shapkin, M.,Aihara, H.,Arinstein, K.,Aushev, T.,Bakich, A. M.,Barberio, E.,Bay, A.,Belous, K.,Bhardwaj, V.,Bondar, A.,Brač,ko, M.,Browder, T. E.,Chang, M.-C.,Chang, P.,Chen, A.,Chen, American Physical Society 2009 PHYSICAL REVIEW D - Vol.79 No.5
Search for lepton-flavor-violating <i>τ</i> decay into a lepton and an <sub>f0</sub>(980) meson
Miyazaki, Y.,Adachi, I.,Aihara, H.,Arinstein, K.,Aushev, T.,Bakich, A.M.,Bay, A.,Bedny, I.,Bitenc, U.,Bondar, A.,Bozek, A.,Brač,ko, M.,Browder, T.E.,Chen, A.,Cheon, B.G.,Cho, I.-S.,Choi, Y.,Dalse Elsevier 2009 Physics letters: B Vol.672 No.4
<P><B>Abstract</B></P><P>We search for lepton-flavor-violating <I>τ</I> decays into a lepton (electron or muon) and an <SUB>f0</SUB>(980) meson using 671 fb<SUP>−1</SUP> of data collected with the Belle detector at the KEKB asymmetric-energy <SUP>e+</SUP><SUP>e−</SUP> collider. No events are observed and we set the following 90% C.L. upper limits on the branching fraction products: B(<SUP>τ−</SUP>→<SUP>e−</SUP><SUB>f0</SUB>(980))×B(<SUB>f0</SUB>(980)→<SUP>π+</SUP><SUP>π−</SUP>)<3.2×<SUP>10−8</SUP> and B(<SUP>τ−</SUP>→<SUP>μ−</SUP><SUB>f0</SUB>(980))×B(<SUB>f0</SUB>(980)→<SUP>π+</SUP><SUP>π−</SUP>)<3.4×<SUP>10−8</SUP>. This is the first search performed for these modes.</P>
Measurement of cross sections of exclusive e<sup>+</sup>e<sup>-</sup>->VP processes at s=10.58 GeV
Belle Collaboration,Belous, K.,Shapkin, M.,Adachi, I.,Aihara, H.,Arinstein, K.,Aulchenko, V.,Bakich, A.M.,Balagura, V.,Barberio, E.,Bartel, W.,Bay, A.,Bischofberger, M.,Bondar, A.,Bozek, A.,Bracko, M. North-Holland Pub. Co 2009 Physics letters: B Vol.681 No.5
The cross sections for the reactions e<SUP>+</SUP>e<SUP>-</SUP>->φη, φη<SUP>'</SUP>, ρη, ρη<SUP>'</SUP> have been measured using a data sample of 516 fb<SUP>-1</SUP> collected with the Belle detector at the KEKB asymmetric-energy e<SUP>+</SUP>e<SUP>-</SUP> collider. The corresponding values of the cross sections are: 1.4+/-0.4+/-0.1 fb (φη), 5.3+/-1.1+/-0.4 fb (φη<SUP>'</SUP>), 3.1+/-0.5+/-0.1 fb (ρη) and 3.3+/-0.6+/-0.2 fb (ρη<SUP>'</SUP>). The energy dependence of the cross sections is presented using Belle measurements together with those of CLEO and BaBar.