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Full-Text Articles in Physics
Search For Rare Decays B+→D (*)+SΗ, D (*)+ SK̅, D+ Η, And D+ K0, M. Kumar, V. Bhardwaj, K. Lalwani, I. Adachi
Search For Rare Decays B+→D (*)+SΗ, D (*)+ SK̅, D+ Η, And D+ K0, M. Kumar, V. Bhardwaj, K. Lalwani, I. Adachi
Faculty Publications
We present a study of rare decay modes B+→D+Sh0, B+→D*+S h0, and B+→D+h0, where h0 denotes the neutral meson η or K0, using a data sample of (772±10)×106 BB̅ events produced at the Υ(4S) resonance. The data were collected by the Belle detector operating at the asymmetric-energy KEKB collider. We find no evidence for these decays, so we set upper limits at the 90% confidence level on the branching fractions of B+→D+ S h0, D*+ S h0, …
Test Of Lepton-Flavor Universality In B→K∗ℓ+ℓ− Decays At Belle, S. Wehle, I. Adachi, K. Adamczyk, H. Aihara, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, P. Behera, M. Berger, V. Bhardwaj, J. Biswal, A. Bozek, M. Bračko, T. E. Browder, M. Campajola, L. Cao, M. -C. Chang, Milind Purohit, Et. Al.
Test Of Lepton-Flavor Universality In B→K∗ℓ+ℓ− Decays At Belle, S. Wehle, I. Adachi, K. Adamczyk, H. Aihara, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, P. Behera, M. Berger, V. Bhardwaj, J. Biswal, A. Bozek, M. Bračko, T. E. Browder, M. Campajola, L. Cao, M. -C. Chang, Milind Purohit, Et. Al.
Faculty Publications
We present a measurement of Rk+ , the branching fraction ratio B(B → K+μ+μ−)=B(B → K*e+e−),, for both charged and neutral B mesons. The ratio for the charged case R K* + is the first measurement ever performed. In addition, we report absolute branching fractions for the individual modes in bins of the squared dilepton invariant mass q2. The analysis is based on a data sample of 711 fb−1, containing 772 × 106 BB̅ events, recorded at the ϒ(4S) resonance …
Search For B− → Λp⊽ ⊽ With The Babar Experiment, J. P. Lees, V. Poireau, V. Tisserand, E. Grauges, A. Palano, G. Eigen, D. N. Brown, Yu G. Kolomensky, M. Fritsch, H. Koch, T. Schroeder, R. Cheaib, C. Hearty, T. S. Mattison, J. A. Mckenna, R. Y. So, V. E. Blinov, A. R. Buzykaev, V. P. Druzhinin, Milind Purohit, Et. Al.
Search For B− → Λp⊽ ⊽ With The Babar Experiment, J. P. Lees, V. Poireau, V. Tisserand, E. Grauges, A. Palano, G. Eigen, D. N. Brown, Yu G. Kolomensky, M. Fritsch, H. Koch, T. Schroeder, R. Cheaib, C. Hearty, T. S. Mattison, J. A. Mckenna, R. Y. So, V. E. Blinov, A. R. Buzykaev, V. P. Druzhinin, Milind Purohit, Et. Al.
Faculty Publications
A search for the rare flavor-changing neutral current process B− → Λp̅ νv̅ using data from the BABAR experiment has been performed. A total of 424 fb−1 of e+e− collision data collected at the center-of-mass energy of the ϒ(4S) resonance is used in this study, corresponding to a sample of (471 ± 3) × 106 BB̅ pairs. Signal B− → Λp̅ νv̅ candidates are identified by first fully reconstructing a B+ decay in one of many possible exclusive decays to hadronic final states, then examining detector activity that is not associated with …
Observation Of Τ−→Π−ΝΤE+E− And Search For Τ−→Π−Ντμ+Μ−, Y. Jin, H. Aihara, D. Epifanov, I. Adachi, S. Ai. Said, D. M. Asner, V. Aulchenko, T. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, S. Bahinipati, V. Bansal, P. Behera, M. Berger, V. Bhardwaj, T. Bilka, J. Biswal, Milind Purohit, Et. Al.
Observation Of Τ−→Π−ΝΤE+E− And Search For Τ−→Π−Ντμ+Μ−, Y. Jin, H. Aihara, D. Epifanov, I. Adachi, S. Ai. Said, D. M. Asner, V. Aulchenko, T. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, S. Bahinipati, V. Bansal, P. Behera, M. Berger, V. Bhardwaj, T. Bilka, J. Biswal, Milind Purohit, Et. Al.
Faculty Publications
We present the first measurements of branching fractions of rare tau-lepton decays, τ−→π−ντℓ+ℓ− (ℓ=e or μ), using a data sample corresponding to 562 fb−1 collected at a center-of-mass energy of 10.58 GeV with the Belle detector at the KEKB asymmetric-energy e+e−collider. The τ−→π−ντe+e− decay is observed for the first time with 7.0σ significance. The partial branching fraction determined by the structure-dependent mechanisms mediated by either a vector or an axial-vector current for the mass region Mπee > 1.05 GeV=c2 is measured to be B(τ− → π …
Search For The Lepton-Flavour Violating Decays B0→K∗0Μ ± E ∓, S. Sandilya, K. Trabelsi, A.J. Schwartz, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, S. Bahinipati, A. M. Bakich, V. Bansal, P. Behera, C. Beleño, V. Bhardwaj, B. Bhuyan, Milind Purohit, Et. Al.
Search For The Lepton-Flavour Violating Decays B0→K∗0Μ ± E ∓, S. Sandilya, K. Trabelsi, A.J. Schwartz, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, S. Bahinipati, A. M. Bakich, V. Bansal, P. Behera, C. Beleño, V. Bhardwaj, B. Bhuyan, Milind Purohit, Et. Al.
Faculty Publications
We have searched for the lepton-flavor-violating decay B0 → K*0μ ±e∓ using a data sample of 711 fb−1 that contains 772 × 106 B B̅ pairs. The data were collected near the ϒð4SÞresonance with the Belle detector at the KEKB asymmetric-energy eþe− collider. No signals were observed, and we set 90% confidence level upper limits on the branching fractions of B(B0 →K*0μ+e−)<1.2×10−7, B(B0 → K*0μ−e+) < 1.6 × 10−7, and, for both decays combined, B(B0 → K …