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Measurement of theτ-lepton Lifetime at Belle
Belous, K.,Shapkin, M.,Sokolov, A.,Adachi, I.,Aihara, H.,Asner, D. M.,Aulchenko, V.,Bakich, A. M.,Bala, A.,Bhuyan, B.,Bobrov, A.,Bondar, A.,Bonvicini, G.,Bozek, A.,Brač,ko, M.,Browder, T. E., American Physical Society 2014 Physical Review Letters Vol.112 No.3
Measurement ofCPasymmetries inB0→K0π0decays
Fujikawa, M.,Yusa, Y.,Dalseno, J.,Hazumi, M.,Sumisawa, K.,Aihara, H.,Arinstein, K.,Aulchenko, V.,Aushev, T.,Aziz, T.,Bakich, A. M.,Balagura, V.,Barberio, E.,Belous, K.,Bhardwaj, V.,Bischofberger, M.,B American Physical Society 2010 PHYSICAL REVIEW D - Vol.81 No.1
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.
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
Measurement of|Vub|from Inclusive Charmless SemileptonicBDecays
Urquijo, P.,Barberio, E.,Adachi, I.,Aihara, H.,Arinstein, K.,Bakich, A. M.,Belous, K.,Bhardwaj, V.,Bischofberger, M.,Bozek, A.,Brač,ko, M.,Browder, T. E.,Chao, Y.,Chen, A.,Cheon, B. G.,Chistov, R American Physical Society 2010 Physical review letters Vol.104 No.2
<P>We present the partial branching fraction for inclusive charmless semileptonic B decays and the corresponding value of the Cabibbo-Kobayashi-Maskawa matrix element vertical bar V-ub vertical bar, using a multivariate analysis method to access similar to 90% of the B -> X(u)l nu phase space. This approach dramatically reduces the theoretical uncertainties from the b-quark mass and nonperturbative QCD compared to all previous inclusive measurements. The results are based on a sample of 657 X 10(6) B (B) over bar pairs collected with the Belle detector. We find that Delta B(B -> X(u)l nu; p(l)*(B) > 1.0 GeV/c) = 1.963X(1 +/- 0.088(stat) +/- 0.081(syst)) X 10(-3). Corresponding values of vertical bar V-ub vertical bar are extracted using several theoretical calculations.</P>
Satoyama, N.,Abe, K.,Adachi, I.,Aihara, H.,Anipko, D.,Bakich, A.M.,Barberio, E.,Bedny, I.,Belous, K.,Bitenc, U.,Bizjak, I.,Bondar, A.,Bozek, A.,Brač,ko, M.,Browder, T.E.,Chang, M.-C.,Chang, P.,Ch Elsevier 2007 Physics letters: B Vol.647 No.2
<P><B>Abstract</B></P><P>We present a search for the decays <SUP>B+</SUP>→<SUP>μ+</SUP><SUB>νμ</SUB> and <SUP>B+</SUP>→<SUP>e+</SUP><SUB>νe</SUB> in a 253 fb<SUP>−1</SUP> data sample collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy <I>B</I> factory. We find no significant evidence for a signal and set 90% confidence level upper limits of B(<SUP>B+</SUP>→<SUP>μ+</SUP><SUB>νμ</SUB>)<1.7×<SUP>10−6</SUP> and B(<SUP>B+</SUP>→<SUP>e+</SUP><SUB>νe</SUB>)<9.8×<SUP>10−7</SUP>.</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>
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 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.