Showing papers by "D. Pantea published in 2005"
University of California, Davis1, CINVESTAV2, University of Colorado Boulder3, Fermilab4, Universidad de Guanajuato5, University of Illinois at Urbana–Champaign6, Indiana University7, Korea University8, Kyungpook National University9, University of Milan10, University of North Carolina at Chapel Hill11, University of Puerto Rico at Mayagüez12, University of South Carolina13, University of Tennessee14, Vanderbilt University15, University of Wisconsin-Madison16
TL;DR: In this paper, the q 2 dependence of the f + q 2 ) form factor was measured using a large sample of D 0 → K − μ + ν and D 0 to π − μ+ ν decays collected by the FOCUS photoproduction experiment at Fermilab.
50 citations
University of California, Davis1, CINVESTAV2, University of Colorado Boulder3, Fermilab4, Universidad de Guanajuato5, University of Illinois at Urbana–Champaign6, Indiana University7, Korea University8, Kyungpook National University9, University of Milan10, University of North Carolina at Chapel Hill11, Pontifical Catholic University of Rio de Janeiro12, University of Puerto Rico at Mayagüez13, University of South Carolina14, University of Tennessee15, Vanderbilt University16, University of Wisconsin-Madison17
TL;DR: In this article, the authors search for T violation in charm meson decays using the four-body decay channels D 0 → K − K + π − π +, D + → K S 0 K+ π− π+, and D s → KS 0 K−K+π−π+ +, and find the asymmetry values to be A T viol (D 0 ) = 0.010 ± 0.057 ( stat.
45 citations
University of California, Davis1, CINVESTAV2, University of Colorado Boulder3, Fermilab4, Universidad de Guanajuato5, University of Illinois at Urbana–Champaign6, Indiana University7, Korea University8, Kyungpook National University9, University of Milan10, University of North Carolina at Chapel Hill11, University of Puerto Rico at Mayagüez12, University of South Carolina13, University of Tennessee14, Vanderbilt University15, University of Wisconsin-Madison16
TL;DR: In this paper, the authors present an analysis of the decay D 0 → K + π − based on FOCUS data, and they find a branching ratio of Γ (D 0 → k+ π + ) = ( 0.429 −0.061 + 0.027 ) % under the assumptions of no mixing and no CP violation.
33 citations
University of California, Davis1, CINVESTAV2, University of Colorado Boulder3, Fermilab4, Universidad de Guanajuato5, University of Illinois at Urbana–Champaign6, Indiana University7, Korea University8, Kyungpook National University9, University of Milan10, University of North Carolina at Asheville11, University of Puerto Rico at Mayagüez12, University of South Carolina13, University of Tennessee14, Vanderbilt University15, University of Wisconsin-Madison16
01 Mar 2005-Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment
TL;DR: In this paper, the first application of the genetic programming technique to high energy physics data was reported. But the technique was applied to FOCUS data samples, and the method was used to study the doubly Cabibbo suppressed decay relative to its favored counterpart.
Abstract: We review genetic programming principles, their application to FOCUS data samples, and use the method to study the doubly Cabibbo suppressed decay D + → K + π + π - relative to its Cabibbo favored counterpart, D + → K - π + π + . We find that this technique is able to improve upon more traditional analysis methods. To our knowledge, this is the first application of the genetic programming technique to High Energy Physics data.
29 citations
University of California, Davis1, CINVESTAV2, University of Colorado Boulder3, Fermilab4, Universidad de Guanajuato5, University of Illinois at Urbana–Champaign6, Indiana University7, Korea University8, Kyungpook National University9, University of Milan10, University of North Carolina at Chapel Hill11, University of Puerto Rico at Mayagüez12, University of South Carolina13, University of Tennessee14, Vanderbilt University15
TL;DR: In this article, a Kπ mass spectrum analysis of the four-body semileptonic charm decay was presented, where the authors obtained a mass of 895.41±0.35MeV/c2, a width of 47.79± 0.86−1.32MeV, and a Blatt-Weisskopf damping factor parameter of 3.99% with respect to the total D+→K−π+μ+ν decay.
23 citations
University of California, Davis1, CINVESTAV2, University of Colorado Boulder3, Fermilab4, Universidad de Guanajuato5, University of Illinois at Urbana–Champaign6, Indiana University7, Korea University8, Kyungpook National University9, University of Milan10, University of North Carolina at Chapel Hill11, Pontifical Catholic University of Rio de Janeiro12, University of Puerto Rico13, University of South Carolina14, University of Tennessee15, Vanderbilt University16, University of Wisconsin-Madison17
TL;DR: In this paper, the authors present a search for a charmed pentaquark decaying strongly to D ( ∗ ) − p, finding no evidence for such a state, they set limits on the cross-section times branching ratio relative to D ∗ − and D − under particular assumptions about the production mechanism.
17 citations
University of California, Davis1, CINVESTAV2, University of Colorado Boulder3, Fermilab4, Universidad de Guanajuato5, University of Illinois at Urbana–Champaign6, Indiana University7, Korea University8, Kyungpook National University9, University of Milan10, University of North Carolina at Chapel Hill11, University of Puerto Rico at Mayagüez12, University of South Carolina13, University of Tennessee14, Vanderbilt University15, University of Wisconsin-Madison16
TL;DR: In this paper, the first measurements for the semileptonic decay D0→K¯0π−μ+ν were made using data collected by the fixed target Fermilab experiment FOCUS.
17 citations
University of California, Davis1, CINVESTAV2, University of Colorado Boulder3, Fermilab4, Universidad de Guanajuato5, University of Illinois at Urbana–Champaign6, Indiana University7, Korea University8, Kyungpook National University9, University of Milan10, University of North Carolina at Chapel Hill11, University of Puerto Rico at Mayagüez12, University of South Carolina13, University of Tennessee14, Vanderbilt University15, University of Wisconsin-Madison16
TL;DR: In this paper, a new measurement for the Cabibbo-suppressed decay mode D{sup 0} {yields} K{sup +}K{sup -}{pi}{sup +}{pi-sup -}.
17 citations
01 Jan 2005
TL;DR: In this article, the authors present a search for a charmed pentaquark decaying strongly to D ( ∗ ) − p, finding no evidence for such a state, they set limits on the cross-section times branching ratio relative to D ∗ − and D − under particular assumptions about the production mechanism.
Abstract: Abstract We present a search for a charmed pentaquark decaying strongly to D ( ∗ ) − p . Finding no evidence for such a state, we set limits on the cross-section times branching ratio relative to D ∗ − and D − under particular assumptions about the production mechanism.
16 citations
University of California, Davis1, CINVESTAV2, University of Colorado Boulder3, Fermilab4, Universidad de Guanajuato5, University of Illinois at Urbana–Champaign6, Indiana University7, Korea University8, Kyungpook National University9, University of Milan10, University of North Carolina at Chapel Hill11, Pontifical Catholic University of Rio de Janeiro12, University of Puerto Rico at Mayagüez13, University of South Carolina14, University of Tennessee15, Vanderbilt University16, University of Wisconsin-Madison17
TL;DR: In this paper, the decay of Λ c + baryons into final states containing a Λ hyperon was studied using data from the FOCUS experiment (FNAL-E831).
10 citations
University of California, Davis1, CINVESTAV2, University of Colorado Boulder3, Fermilab4, Universidad de Guanajuato5, University of Illinois at Urbana–Champaign6, Indiana University7, Korea University8, Kyungpook National University9, University of Milan10, University of North Carolina at Chapel Hill11, Pontifical Catholic University of Rio de Janeiro12, University of Puerto Rico at Mayagüez13, University of South Carolina14, University of Tennessee15, Vanderbilt University16, University of Wisconsin-Madison17
TL;DR: This article applied a genetic programming technique to search for the doubly Cabibbo suppressed decays Λ c + → p K + π − and D s + → K + K + −.
University of California, Davis1, CINVESTAV2, University of Colorado Boulder3, Fermilab4, Universidad de Guanajuato5, University of Illinois at Urbana–Champaign6, Indiana University7, Korea University8, Kyungpook National University9, University of Milan10, University of North Carolina at Chapel Hill11, University of Puerto Rico at Mayagüez12, University of South Carolina13, University of Tennessee14, Vanderbilt University15, University of Wisconsin-Madison16
TL;DR: In this article, a new measurement of the branching ratio of the Cabibbo suppressed decay D 0 → π − μ + ν relative to the CSA favored decay D 1 → K − μ+ ν was presented.
University of California, Davis1, CINVESTAV2, University of Colorado Boulder3, Fermilab4, Universidad de Guanajuato5, University of Illinois at Urbana–Champaign6, Indiana University7, Korea University8, Kyungpook National University9, University of Milan10, University of North Carolina at Chapel Hill11, University of Puerto Rico at Mayagüez12, University of South Carolina13, University of Tennessee14, Vanderbilt University15, University of Wisconsin-Madison16
TL;DR: In this paper, the decay of D 0 mesons into final states containing more than one K S 0 was investigated and it was shown that two Cabibbo favored decay modes, D 0 → KS 0 K S, K − π + π+ π −, and D0 → K S S 0 KS, K + ρ − ρ− π−, can be found to be 0.0019 ± 0.0010.
University of California, Davis1, CINVESTAV2, University of Colorado Boulder3, Fermilab4, Universidad de Guanajuato5, University of Illinois at Urbana–Champaign6, Indiana University7, Korea University8, Kyungpook National University9, University of Milan10, University of North Carolina at Chapel Hill11, Pontifical Catholic University of Rio de Janeiro12, University of Puerto Rico at Mayagüez13, University of South Carolina14, University of Tennessee15, Vanderbilt University16, University of Wisconsin-Madison17
TL;DR: A high statistics measurement of the D(s)+ lifetime from the Fermilab fixed-target FOCUS photoproduction experiment is presented and the analysis of the two decay modes, D( s)+ --> phi(1020)pi+ and D (s)+ -->K*(892)0K+ is described.
Abstract: A high statistics measurement of the D(s)+ lifetime from the Fermilab fixed-target FOCUS photoproduction experiment is presented. We describe the analysis of the two decay modes, D(s)+ --> phi(1020)pi+ and D(s)+ -->K*(892)0K+, used for the measurement. The measured lifetime is 507.4 +/- 5.5(stat) +/- 5.1(syst) fs using 8961 +/- 105 D(s)+ --> phi(1020)pi+ and 4680 +/- 90 D(s)+ --> K*(892)0K+ decays. This is a significant improvement over the present world average.
01 Jan 2005