A. Calandrino

Publications (5)7.91 Total impact

• Article: Search for violation in D0 and D+ decays

  J. M. Link, V. S. Paolone, M. Reyes, P. M. Yager, J. C. Anjos, I. Bediaga, C. Göbel, J. Magnin, J. M. de Miranda, I. M. Pepe, [......], D. Engh, W. E. Johns, M. Hosack, M. S. Nehring, M. Sales, P. D. Sheldon, K. Stenson, M. S. Webster, M. Sheaff, Y. Kwon
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  ABSTRACT: A high statistics sample of photoproduced charm particles from the FOCUS (E831) experiment at Fermilab has been used to search for CP violation in the Cabibbo suppressed decay modes D+-->K-K+π+, D0-->K-K+ and D0-->π-π+. We have measured the following CP asymmetry parameters: ACP(K-K+π+)=+0.006+/- 0.011+/-0.005, ACP(K-K+)=-0.001+/-0.022+/-0.015 and ACP(π-π+)=+0.048+/-0.039+/-0.025 where the first error is statistical and the second error is systematic. These asymmetries are consistent with zero with smaller errors than previous measurements.
  Physics Letters B 09/2000; 491:232-239. · 3.95 Impact Factor
• Article: Measurements of the Σc0 and Σc++ mass splittings

  J. M. Link, V. S, P. M. Yager, J. C. Anjos, I. Bediaga, J. M. de Miranda, I. M, A. C. dos Reis, F. R. A. Simão, S. Carrillo, [......], D. Engh, W. E. Johns, M. Hosack, M. S, M. Sales, P. D. Sheldon, K. Stenson, M. S. Webster, M. Sheaff, Y. J. Kwon
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  ABSTRACT: Using a high statistics sample of photoproduced charmed particles from the FOCUS experiment at Fermilab (FNAL-E831), we measure the mass splittings of the charmed baryons Σc0and Σc++. We find M(Σc0- Λc+)=167.38+/-0.21+/-0.13MeV/c2 and M(Σc++- Λc+)=167.35+/-0.19+/-0.12MeV/c2 with samples of 362+/-36 and 461+/-39 events, respectively. We measure the isospin mass splitting M(Σc++-Σc0) to be -0.03+/-0.28+/-0.11MeV/c2. The first errors are statistical and the second are systematic.
  Physics Letters B 08/2000; 488:218-224. · 3.95 Impact Factor
• Source

  Available from: Gabriele Gianini

  Article: A measurement of lifetime differences in the neutral D-meson system

  J.M Link, V.S Paolone, M Reyes, P.M Yager, J.C Anjos, I Bediaga, C Göbel, J Magnin, J.M de Miranda, I.M Pepe, [......], D Engh, W.E Johns, M Hosack, M.S Nehring, M Sales, P.D Sheldon, K Stenson, M.S Webster, M Sheaff, Y.J Kwon
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  ABSTRACT: Using a high statistics sample of photoproduced charm particles from the FOCUS experiment at Fermilab, we compare the lifetimes of neutral D mesons decaying via to measure the lifetime differences between CP even and CP odd final states. These measurements bear on the phenomenology of mixing. If the D0→K−π+ is an equal mixture of CP even and CP odd eigenstates, we measure .
  Physics Letters B.
• Source

  Available from: Gabriele Gianini

  Article: Search for violation in D0 and D+ decays

  J.M Link, V.S Paolone, M Reyes, P.M Yager, J.C Anjos, I Bediaga, C Göbel, J Magnin, J.M de Miranda, I.M Pepe, [......], D Engh, W.E Johns, M Hosack, M.S Nehring, M Sales, P.D Sheldon, K Stenson, M.S Webster, M Sheaff, Y Kwon
  [show abstract] [hide abstract]
  ABSTRACT: A high statistics sample of photoproduced charm particles from the FOCUS (E831) experiment at Fermilab has been used to search for CP violation in the Cabibbo suppressed decay modes D+→K−K+π+, D0→K−K+ and D0→π−π+. We have measured the following CP asymmetry parameters: ACP(K−K+π+)=+0.006±0.011±0.005, ACP(K−K+)=−0.001±0.022±0.015 and ACP(π−π+)=+0.048±0.039±0.025 where the first error is statistical and the second error is systematic. These asymmetries are consistent with zero with smaller errors than previous measurements.
  Physics Letters B.
• Source

  Available from: Gabriele Gianini

  Article: Measurements of the Σc0 and Σc++ mass splittings

  J.M. Link, V.S. Paolone, M. Reyes, P.M. Yager, J.C. Anjos, I. Bediaga, C. Göbel, J. Magnin, J.M. de Miranda, I.M. Pepe, [......], D. Engh, W.E. Johns, M. Hosack, M.S. Nehring, M. Sales, P.D. Sheldon, K. Stenson, M.S. Webster, M. Sheaff, Y.J. Kwon
  [show abstract] [hide abstract]
  ABSTRACT: Using a high statistics sample of photoproduced charmed particles from the FOCUS experiment at Fermilab (FNAL-E831), we measure the mass splittings of the charmed baryons and . We find and with samples of 362±36 and 461±39 events, respectively. We measure the isospin mass splitting to be . The first errors are statistical and the second are systematic.
  Physics Letters B.