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2021

Lepton colliders

Articles 1 - 6 of 6

Full-Text Articles in Physics

Study Of The Process E+ EΠ + Π Π0 Using Initial State Radiation With Babar, 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. Dec 2021

Study Of The Process E+ E− → Π + Π − Π0 Using Initial State Radiation With Babar, 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

The process e+e→ π+ππ0γ is studied at a center-of-mass energy near the ϒ(4S) resonance using a data sample of 469 fb−1 collected with the BABAR detector at the PEP-II collider. We have performed a precise measurement of the e+eπ+ππ0 cross section in the center-of-mass energy range from 0.62 to 3.5 GeV. In the energy regions of theω and ϕ resonances, the cross section is measured with a systematic uncertainty of 1.3%. The leading-order hadronic contribution to the …


Measurement Of Branching Fractions And Cp Asymmetries For D + S K+ (Η,Π) And D D + S Π+(Η,Π) Decays At Belle Decays At Belle, Y. Guan, A.J. Schwartz, K. Kinoshita, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, P. Behera, J. Bennett, M. Bessner, V. Bhardwaj, B. Bhuyan, T. Bilka, Milind Purohit, Et. Al. Jun 2021

Measurement Of Branching Fractions And Cp Asymmetries For D + S K+ (Η,Π) And D D + S → Π+(Η,Π) Decays At Belle Decays At Belle, Y. Guan, A.J. Schwartz, K. Kinoshita, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, P. Behera, J. Bennett, M. Bessner, V. Bhardwaj, B. Bhuyan, T. Bilka, Milind Purohit, Et. Al.

Faculty Publications

We report measurements of the branching fractions and CP asymmetries for D + S → K+η, D + S → K+π0, and D + S π+η decays, and the branching fraction for D + S π+π0. Our results are based on a data sample corresponding to an integrated luminosity of 921 fb−1 collected by the Belle detector at the KEKB e+e asymmetric-energy collider. Our measurements of CP asymmetries in these decays are the most precise to date; no evidence for CP …


Measurement Of Branching Fractions And Cp Asymmetries For D+S → D + S → K+ (Η,Π;0) And D + S Π + (Η;Π0) Decays At Belle, Y. Guan, A.J. Schwartz, K. Kinoshita, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, P. Behera, J. Bennett, M. Bessner, V. Bhardwaj, B. Bhuyan, T. Bilka, J. Biswal, Milind Purohit, Et. Al. Jun 2021

Measurement Of Branching Fractions And Cp Asymmetries For D+S → D + S → K+ (Η,Π;0) And D + S →Π + (Η;Π0) Decays At Belle, Y. Guan, A.J. Schwartz, K. Kinoshita, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, P. Behera, J. Bennett, M. Bessner, V. Bhardwaj, B. Bhuyan, T. Bilka, J. Biswal, Milind Purohit, Et. Al.

Faculty Publications

We report measurements of the branching fractions and CP asymmetries for D+ s → Kþη, Dþ s → K+π0, and D+ s → πþη decays, and the branching fraction for Dþ s → π+π0. Our results are based on a data sample corresponding to an integrated luminosity of 921 fb−1 collected by the Belle detector at the KEKB e+e asymmetric-energy collider. Our measurements of CP asymmetries in these decays are the most precise to date; no evidence for CP violation is found.


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. Apr 2021

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 …


Measurement Of Time-Dependent Cp Violation Parameters In B0 → K0 S K0 S K0 S Decays At Belle, K. H. Kang, H. Park, T. Higuchi, K. Miyabayashi, K. Miyabayashi, K. Sumisawa, I. Adachi, J. K. Ahn, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, S. Bahinipati, A. M. Bakich, P. Behera, Milind Purohit, Et. Al. Feb 2021

Measurement Of Time-Dependent Cp Violation Parameters In B0 → K0 S K0 S K0 S Decays At Belle, K. H. Kang, H. Park, T. Higuchi, K. Miyabayashi, K. Miyabayashi, K. Sumisawa, I. Adachi, J. K. Ahn, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, S. Bahinipati, A. M. Bakich, P. Behera, Milind Purohit, Et. Al.

Faculty Publications

We measure the time-dependent CPviolation parameters in B0 → K0 S K0 S K0 S decays using 772 × 106 BB̅ pairs collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e collider. The obtained mixing-induced and direct CP asymmetries are −0.71 ± 0.23 (stat) ± 0.05 (syst) and 0.12 ± 0.16 (stat) ± 0.05 (syst), respectively. These values are consistent with the Standard Model predictions. The significance of CP violation differs from zero by 2.5 standard deviations.


Measurement Of Time-Dependent Cp Violation Parameters In B0 → K0 S K0 S K0 S Decays At Belle, K. H. Kang, H. Park, T. Higuchi, K. Miyabayashi, K. Sumisawa, I. Adachi, J. K. Ahn, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, S. Bahinipati, A. M. Bakich, P. Behera, C. Beleño, J. Bennett, Milind Purohit, Et. Al. Feb 2021

Measurement Of Time-Dependent Cp Violation Parameters In B0 → K0 S K0 S K0 S Decays At Belle, K. H. Kang, H. Park, T. Higuchi, K. Miyabayashi, K. Sumisawa, I. Adachi, J. K. Ahn, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, S. Bahinipati, A. M. Bakich, P. Behera, C. Beleño, J. Bennett, Milind Purohit, Et. Al.

Faculty Publications

We measure the time-dependent CP violation parameters in B0 → K0 S K0 S K0 S decays using 772 × 106 BB̅ pairs collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e collider. The obtained mixing-induced and direct CP asymmetries are −0.71 ± 0.23 (stat) ± 0.05 (syst) and 0.12 ± 0.16 (stat) 0.05 (syst), respectively. These values are consistent with the Standard Model predictions. The significance of CP violation differs from zero by 2.5 standard deviations.