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University of South Carolina

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Charmed mesons

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Articles 1 - 3 of 3

Full-Text Articles in Physics

Precise Measurement Of The D0 And D+ Lifetimes At Belle Ii, F. Abudin´En, I. Adachi, K. Adamczyk, L. Aggarwal, H. Ahmed, H. Aihara, N. Akopov, A. Aloisio, N. Anh Ky, D. M. Asner, H. Atmacan, V. Aushev, V. Babu, S. Bacher, H. Bae, S. Baehr, S. Bahinipati, P. Bambade, Milind Purohit, Et. Al. Nov 2021

Precise Measurement Of The D0 And D+ Lifetimes At Belle Ii, F. Abudin´En, I. Adachi, K. Adamczyk, L. Aggarwal, H. Ahmed, H. Aihara, N. Akopov, A. Aloisio, N. Anh Ky, D. M. Asner, H. Atmacan, V. Aushev, V. Babu, S. Bacher, H. Bae, S. Baehr, S. Bahinipati, P. Bambade, Milind Purohit, Et. Al.

Faculty Publications

We report a measurement of the D0 and D+ lifetimes using D0Kπ+ and D+ → Kπ+π+ decays reconstructed in e+e → cc̅ data recorded by the Belle II experiment at the SuperKEKB asymmetricenergy e+e collider. The data, collected at center-of-mass energies at or near the ϒ(4S) resonance, correspond to an integrated luminosity of 72 fb−1. The results, τ(D0) = 410.5 plusmn;1.1(stat) 0.8(syst) fs and τ(D+) = 1030.4 plusmn; 4.7(stat) 3.1(syst) …


Search For Rare Or Forbidden Decays Of The D0 Meson, 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 Feb 2020

Search For Rare Or Forbidden Decays Of The D0 Meson, 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

Faculty Publications

We present a search for nine lepton-number-violating and three lepton-flavor-violating neutral charm decays of the type D0 → h'−hℓ'++ and D0→h'h+ℓ'±, where h and h0 represent a K or π meson and ℓ and ℓ′ an electron or muon. The analysis is based on 468 fb−1 of e+e annihilation data collected at or close to the ϒ(4S) resonance with the BABAR detector at the SLAC National Accelerator Laboratory. No significant signal is observed for any of the twelve modes, …


Observation Of The Decay D0 → K Π + E + E , J.P. Lees, P. Poireau, V. Tisserand, E. Grauges, A. Palano, G. Eigen, D. N. Brown, Yu. G. Kolomensky, M. Fritsch, H. Koch, T. Schroeder, C. Hearty, T. S. Mattison, J. A. Mckenna, R. Y. So, V. E. Blinov, A. R. Buzykaev, V. P. Druzhinin, V. B. Golubev, Milind Purohit, Et. Al. Feb 2019

Observation Of The Decay D0 → K− Π + E + E −, J.P. Lees, P. Poireau, V. Tisserand, E. Grauges, A. Palano, G. Eigen, D. N. Brown, Yu. G. Kolomensky, M. Fritsch, H. Koch, T. Schroeder, C. Hearty, T. S. Mattison, J. A. Mckenna, R. Y. So, V. E. Blinov, A. R. Buzykaev, V. P. Druzhinin, V. B. Golubev, Milind Purohit, Et. Al.

Faculty Publications

We report the observation of the rare charm decay D0 → K−πþeþe−, based on 468 fb−1 of eþe− annihilation data collected at or close to the center-of-mass energy of the ϒð4SÞ resonance with the BABAR detector at the SLAC National Accelerator Laboratory. We find the branching fraction in the invariant mass range 0.675 < m(e+e) < 0.875 GeV=c2 of the electron-positron pair to be B(D0 → K−π+e+e) = (4.0 ± 0.5 ± 0.2 ± 0.1) × 10−6, where the first uncertainty is statistical, the second …