52 results on '"G Gianini"'
Search Results
2. Hadronic mass spectrum analysis of D+→K−π+μ+ν decay and measurement of the K∗(892)0 mass and width
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J.M. Link, P.M. Yager, J.C. Anjos, I. Bediaga, C. Göbel, A.A. Machado, J. Magnin, A. Massafferri, J.M. de Miranda, I.M. Pepe, E. Polycarpo, A.C. dos Reis, S. Carrillo, E. Casimiro, E. Cuautle, A. Sánchez-Hernández, C. Uribe, F. Vázquez, L. Agostino, L. Cinquini, J.P. Cumalat, B. O'Reilly, I. Segoni, K. Stenson, J.N. Butler, H.W.K. Cheung, G. Chiodini, I. Gaines, P.H. Garbincius, L.A. Garren, E. Gottschalk, P.H. Kasper, A.E. Kreymer, R. Kutschke, M. Wang, L. Benussi, M. Bertani, S. Bianco, F.L. Fabbri, A. Zallo, M. Reyes, C. Cawlfield, D.Y. Kim, A. Rahimi, J. Wiss, R. Gardner, A. Kryemadhi, Y.S. Chung, J.S. Kang, B.R. Ko, J.W. Kwak, K.B. Lee, K. Cho, H. Park, G. Alimonti, S. Barberis, M. Boschini, A. Cerutti, P. D'Angelo, M. DiCorato, P. Dini, L. Edera, S. Erba, P. Inzani, F. Leveraro, S. Malvezzi, D. Menasce, M. Mezzadri, L. Moroni, D. Pedrini, C. Pontoglio, F. Prelz, M. Rovere, S. Sala, T.F. Davenport, V. Arena, G. Boca, G. Bonomi, G. Gianini, G. Liguori, D. Lopes Pegna, M.M. Merlo, D. Pantea, S.P. Ratti, C. Riccardi, P. Vitulo, H. Hernandez, A.M. Lopez, H. Mendez, A. Paris, J. Quinones, J.E. Ramirez, Y. Zhang, J.R. Wilson, T. Handler, R. Mitchell, D. Engh, M. Hosack, W.E. Johns, E. Luiggi, J.E. Moore, M. Nehring, P.D. Sheldon, E.W. Vaandering, M. Webster, and M. Sheaff
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Nuclear physics ,Physics ,Nuclear and High Energy Physics ,Branching fraction ,Hadron ,Analytical chemistry ,Mass spectrum ,Spectrum analysis ,Mass spectrum analysis - Abstract
We present a Kπ mass spectrum analysis of the four-body semileptonic charm decay D+→K−π+μ+ν in the range of 0.65GeV/c2
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- 2005
- Full Text
- View/download PDF
3. Measurement of masses and widths of excited charm mesons D and evidence for broad states
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J.M. Link, P.M. Yager, J.C. Anjos, I. Bediaga, C. Göbel, A.A. Machado, J. Magnin, A. Massafferri, J.M. de Miranda, I.M. Pepe, E. Polycarpo, A.C. dos Reis, S. Carrillo, E. Casimiro, E. Cuautle, A. Sánchez-Hernández, C. Uribe, F. Vázquez, L. Agostino, L. Cinquini, J.P. Cumalat, B. O'Reilly, I. Segoni, M. Wahl, J.N. Butler, H.W.K. Cheung, G. Chiodini, I. Gaines, P.H. Garbincius, L.A. Garren, E. Gottschalk, P.H. Kasper, A.E. Kreymer, R. Kutschke, M. Wang, L. Benussi, M. Bertani, S. Bianco, F.L. Fabbri, A. Zallo, M. Reyes, C. Cawlfield, D.Y. Kim, A. Rahimi, J. Wiss, R. Gardner, A. Kryemadhi, Y.S. Chung, J.S. Kang, B.R. Ko, J.W. Kwak, K.B. Lee, K. Cho, H. Park, G. Alimonti, S. Barberis, M. Boschini, A. Cerutti, P. D'Angelo, M. DiCorato, P. Dini, L. Edera, S. Erba, M. Giammarchi, P. Inzani, F. Leveraro, S. Malvezzi, D. Menasce, M. Mezzadri, L. Moroni, D. Pedrini, C. Pontoglio, F. Prelz, M. Rovere, S. Sala, T.F. Davenport, V. Arena, G. Boca, G. Bonomi, G. Gianini, G. Liguori, M.M. Merlo, D. Pantea, D. Lopes Pegna, S.P. Ratti, C. Riccardi, P. Vitulo, H. Hernandez, A.M. Lopez, E. Luiggi, H. Mendez, A. Paris, J.E. Ramirez, Y. Zhang, J.R. Wilson, T. Handler, R. Mitchell, D. Engh, M. Hosack, W.E. Johns, M. Nehring, P.D. Sheldon, K. Stenson, E.W. Vaandering, M. Webster, and M. Sheaff
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Physics ,Nuclear physics ,Nuclear and High Energy Physics ,Meson ,Excited state ,Resonance ,Invariant mass ,Charm (quantum number) ,State (functional analysis) ,Atomic physics - Abstract
Using data from the FOCUS experiment we analyze the D+π− and D0π+ invariant mass distributions. We measure the D 2 ∗0 mass M D 2 ∗0 =(2464.5±1.1±1.9) MeV /c 2 and width Γ D 2 ∗0 =(38.7±5.3±2.9) MeV /c 2 , and the D 2 ∗+ mass M D 2 ∗+ =(2467.6±1.5±0.76) MeV /c 2 and width Γ D 2 ∗+ =(34.1±6.5±4.2) MeV /c 2 . We find evidence for broad structures over background in both the neutral and charged final state. If each is interpreted as evidence for a single L=1, jq=1/2 excited charm meson resonance, the masses and widths are M 1/2 0 =(2407±21±35) MeV /c 2 , Γ 1/2 0 =(240±55±59) MeV /c 2 , and M 1/2 + =(2403±14±35) MeV /c 2 , Γ 1/2 + =(283±24±34) MeV /c 2 , respectively.
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- 2004
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4. New measurements of the D+→φμ+ν form factor ratios
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J.M. Link, P.M. Yager, J.C. Anjos, I. Bediaga, C. Göbel, A.A. Machado, J. Magnin, A. Massafferri, J.M. de Miranda, I.M. Pepe, E. Polycarpo, A.C. dos Reis, S. Carrillo, E. Casimiro, E. Cuautle, A. Sánchez-Hernández, C. Uribe, F. Vázquez, L. Agostino, L. Cinquini, J.P. Cumalat, J. Jacobs, B. O'Reilly, I. Segoni, K. Stenson, J.N. Butler, H.W.K. Cheung, G. Chiodini, I. Gaines, P.H. Garbincius, L.A. Garren, E. Gottschalk, P.H. Kasper, A.E. Kreymer, R. Kutschke, M. Wang, L. Benussi, M. Bertani, S. Bianco, F.L. Fabbri, A. Zallo, M. Reyes, C. Cawlfield, D.Y. Kim, A. Rahimi, J. Wiss, R. Gardner, Y.S. Chung, J.S. Kang, B.R. Ko, J.W. Kwak, K.B. Lee, K. Cho, H. Park, G. Alimonti, S. Barberis, M. Boschini, A. Cerutti, P. D'Angelo, M. DiCorato, P. Dini, L. Edera, S. Erba, M. Giammarchi, P. Inzani, F. Leveraro, S. Malvezzi, D. Menasce, M. Mezzadri, L. Moroni, D. Pedrini, C. Pontoglio, F. Prelz, M. Rovere, S. Sala, T.F. Davenport, V. Arena, G. Boca, G. Bonomi, G. Gianini, G. Liguori, M.M. Merlo, D. Pantea, D. Lopes Pegna, S.P. Ratti, C. Riccardi, P. Vitulo, H. Hernandez, A.M. Lopez, H. Mendez, A. Paris, J.E. Ramirez, Y. Zhang, J.R. Wilson, T. Handler, R. Mitchell, D. Engh, M. Hosack, W.E. Johns, E. Luiggi, M. Nehring, P.D. Sheldon, E.W. Vaandering, M. Webster, and M. Sheaff
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Nuclear physics ,Physics ,Nuclear and High Energy Physics ,Analytical chemistry ,Form factor (quantum field theory) ,Large sample - Abstract
Using a large sample of D s + → φμ + ν decays collected by the FOCUS photoproduction experiment at Fermilab, we present new measurements of two semileptonic form factor ratios: r v and r 2 . We find r v =1.549±0.250±0.148 and r 2 =0.713±0.202±0.284. These values are consistent with r v and r 2 form factors measured for the process D + → K ∗0 l + ν l .
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- 2004
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5. Charm–anticharm baryon production asymmetries in photon–nucleon interactions
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J.M Link, P.M Yager, J.C Anjos, I Bediaga, C Göbel, A.A Machado, J Magnin, A Massafferri, J.M de Miranda, I.M Pepe, E Polycarpo, A.C dos Reis, S Carrillo, E Casimiro, E Cuautle, A Sánchez-Hernández, F Vázquez, C Uribe, L Agostino, L Cinquini, J.P Cumalat, B O'Reilly, I Segoni, M Wahl, J.N Butler, H.W.K Cheung, G Chiodini, I Gaines, P.H Garbincius, L.A Garren, E Gottschalk, P.H Kasper, A.E Kreymer, R Kutschke, M Wang, L Benussi, M Bertani, S Bianco, F.L Fabbri, A Zallo, M Reyes, C Cawlfield, D.Y Kim, A Rahimi, J Wiss, R Gardner, A Kryemadhi, Y.S Chung, J.S Kang, B.R Ko, J.W Kwak, K.B Lee, K Cho, H Park, G Alimonti, S Barberis, M Boschini, A Cerutti, P D'Angelo, M DiCorato, P Dini, L Edera, S Erba, M Giammarchi, P Inzani, F Leveraro, S Malvezzi, D Menasce, M Mezzadri, L Moroni, D Pedrini, C Pontoglio, F Prelz, M Rovere, S Sala, T.F Davenport, V Arena, G Boca, G Bonomi, G Gianini, G Liguori, M.M Merlo, D Pantea, D Lopes Pegna, S.P Ratti, C Riccardi, P Vitulo, H Hernandez, A.M Lopez, E Luiggi, H Mendez, A Paris, J.E Ramirez, Y Zhang, J.R Wilson, T Handler, R Mitchell, D Engh, M Hosack, W.E Johns, M Nehring, P.D Sheldon, K Stenson, E.W Vaandering, M Webster, and M Sheaff
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Physics ,Particle physics ,Nuclear and High Energy Physics ,Photon ,media_common.quotation_subject ,FOS: Physical sciences ,Asymmetry ,High Energy Physics - Experiment ,Baryon ,High Energy Physics - Experiment (hep-ex) ,Excited state ,Production (computer science) ,Charm (quantum number) ,Fermilab ,Nucleon ,media_common - Abstract
We report measurements of the charm-anticharm production asymmetries for $\Lambda_c^+$, $\Sigma_c^{++}$, $\Sigma_c^0$, $\Sigma_c^{++*}$, $\Sigma_c^{0*}$, and $\Lambda_c^+(2625)$ baryons from the Fermilab photoproduction experiment FOCUS (E831). These asymmetries are integrated over the region where the spectrometer has good acceptance. In addition, we have obtained results for the photoproduction asymmetries of the $\Lambda_c$ baryons as functions of $p_L$, $p_T^2$, and $x_F$. The integrated asymmetry for $\Lambda_c^+$ production, $(\sigma_{\Lambda_c^+} - \sigma_{\Lambda_c^-}) / (\sigma_{\Lambda_c^+} + \sigma_{\Lambda_c^-})$, is $0.111 \pm 0.018 \pm 0.012$, significantly different from zero. The asymmetries of the excited states are consistent with the $\Lambda_c$ asymmetry., Comment: 12 pages, 9 figures, 1 table
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- 2004
- Full Text
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6. Studies of correlations between D and D mesons in high energy photoproduction
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J.M. Link, P.M. Yager, J.C. Anjos, I. Bediaga, C. Göbel, J. Magnin, A. Massafferri, J.M. de Miranda, I.M. Pepe, E. Polycarpo, A.C. dos Reis, S. Carrillo, E. Casimiro, E. Cuautle, A. Sánchez-Hernández, C. Uribe, F. Vázquez, L. Agostino, L. Cinquini, J.P. Cumalat, B. O'Reilly, I. Segoni, M. Wahl, J.N. Butler, H.W.K. Cheung, G. Chiodini, I. Gaines, P.H. Garbincius, L.A. Garren, E.E. Gottschalk, P.H. Kasper, A.E. Kreymer, R. Kutschke, M. Wang, L. Benussi, M. Bertani, S. Bianco, F.L. Fabbri, A. Zallo, M. Reyes, C. Cawlfield, D.Y. Kim, A. Rahimi, J. Wiss, R. Gardner, A. Kryemadhi, Y.S. Chung, J.S. Kang, B.R. Ko, J.W. Kwak, K.B. Lee, K. Cho, H. Park, G. Alimonti, S. Barberis, M. Boschini, A. Cerutti, P. D'Angelo, M. DiCorato, P. Dini, L. Edera, S. Erba, M. Giammarchi, P. Inzani, F. Leveraro, S. Malvezzi, D. Menasce, M. Mezzadri, L. Moroni, D. Pedrini, C. Pontoglio, F. Prelz, M. Rovere, S. Sala, T.F. Davenport, V. Arena, G. Boca, G. Bonomi, G. Gianini, G. Liguori, D. Lopes Pegna, M.M. Merlo, D. Pantea, S.P. Ratti, C. Riccardi, P. Vitulo, H. Hernandez, A.M. Lopez, E. Luiggi, H. Mendez, A. Paris, J. Quinones, J.E. Ramirez, Y. Zhang, J.R. Wilson, T. Handler, R. Mitchell, D. Engh, M. Hosack, W.E. Johns, M. Nehring, P.D. Sheldon, K. Stenson, E.W. Vaandering, M. Webster, and M. Sheaff
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Quark ,Physics ,High energy ,Particle physics ,Nuclear and High Energy Physics ,Meson ,Bar (music) ,Nuclear Theory ,High Energy Physics::Phenomenology ,FOS: Physical sciences ,Large sample ,High Energy Physics - Experiment ,High Energy Physics - Experiment (hep-ex) ,Production (computer science) ,High Energy Physics::Experiment ,Fermilab ,Charm (quantum number) ,Nuclear Experiment - Abstract
Studies of $D{\bar D}$ correlations for a large sample of events containing fully and partially reconstructed pairs of charmed $D$ mesons recorded by the Fermilab photoproduction experiment FOCUS (FNAL-E831) are presented. Correlations between $D$ and ${\bar D}$ mesons are used to study heavy quark production dynamics. We present results for fully and partially reconstructed charm pairs and comparisons to a recent version of \textsc{Pythia} with default parameter settings. We also comment on the production of $\psi(3770)$ in our data., Comment: 14 pages, 4 figures
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- 2003
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7. Measurement of the Ωc0 lifetime
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J.M Link, M Reyes, P.M Yager, J.C Anjos, I Bediaga, C Göbel, J Magnin, A Massafferri, J.M de Miranda, I.M Pepe, A.C dos Reis, S Carrillo, E Casimiro, E Cuautle, A Sánchez-Hernández, C Uribe, F Vázquez, L Agostino, L Cinquini, J.P Cumalat, B O'Reilly, J.E Ramirez, I Segoni, M Wahl, J.N Butler, H.W.K Cheung, G Chiodini, I Gaines, P.H Garbincius, L.A Garren, E Gottschalk, P.H Kasper, A.E Kreymer, R Kutschke, L Benussi, S Bianco, F.L Fabbri, A Zallo, C Cawlfield, D.Y Kim, A Rahimi, J Wiss, R Gardner, A Kryemadhi, C.H Chang, Y.S Chung, J.S Kang, B.R Ko, J.W Kwak, K.B Lee, K Cho, H Park, G Alimonti, S Barberis, M Boschini, A Cerutti, P D'Angelo, M DiCorato, P Dini, L Edera, S Erba, M Giammarchi, P Inzani, F Leveraro, S Malvezzi, D Menasce, M Mezzadri, L Moroni, D Pedrini, C Pontoglio, F Prelz, M Rovere, S Sala, T.F Davenport, V Arena, G Boca, G Bonomi, G Gianini, G Liguori, M.M Merlo, D Pantea, D Lopes Pegna, S.P Ratti, C Riccardi, P Vitulo, H Hernandez, A.M Lopez, E Luiggi, H Mendez, A Paris, J Quinones, W Xiong, Y Zhang, J.R Wilson, T Handler, R Mitchell, D Engh, M Hosack, W.E Johns, M Nehring, P.D Sheldon, K Stenson, E.W Vaandering, M Webster, and M Sheaff
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Physics ,Baryon ,Nuclear and High Energy Physics ,Particle physics ,010308 nuclear & particles physics ,0103 physical sciences ,010306 general physics ,01 natural sciences ,Omega - Abstract
The FOCUS experiment(FNAL-E831) has used two channels, $\Omega^- \pi^+$ and $\Xi^-K^- \pi^+ \pi^+$,to measure the lifetime of the $\Omega_c^0$ charmed baryon. From a sample of $64 \pm 14$ signal events at a mass of 2.698 GeV/$c^2$, we measure an $\Omega_c^0$ lifetime of $72 \pm 11$ (stat.) $\pm 11$ (sys.) fs, substantially improving upon the current world average.
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- 2003
- Full Text
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8. A new measurement of the Ξ0 lifetime
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J.M Link, M Reyes, P.M Yager, J.C Anjos, I Bediaga, C Göbel, J Magnin, A Massafferri, J.M de Miranda, I.M Pepe, A. C dos Reis, S Carrillo, E Casimiro, E Cuautle, A Sánchez-Hernández, C Uribe, F Vázquez, L Agostino, L Cinquini, J.P Cumalat, B O'Reilly, J.E Ramirez, I Segoni, J.N Butler, H.W.K Cheung, G Chiodini, I Gaines, P.H Garbincius, L.A Garren, E Gottschalk, P.H Kasper, A.E Kreymer, R Kutschke, L Benussi, S Bianco, F.L Fabbri, A Zallo, C Cawlfield, D.Y Kim, K.S Park, A Rahimi, J Wiss, R Gardner, A Kryemadhi, K.H Chang, Y.S Chung, J.S Kang, B.R Ko, J.W Kwak, K.B Lee, K Cho, H Park, G Alimonti, S Barberis, A Cerutti, M Boschini, P D'Angelo, M DiCorato, P Dini, L Edera, S Erba, M Giammarchi, P Inzani, F Leveraro, S Malvezzi, D Menasce, M Mezzadri, L Moroni, D Pedrini, C Pontoglio, F Prelz, M Rovere, S Sala, T.F Davenport, V Arena, G Boca, G Bonomi, G Gianini, G Liguori, M.M Merlo, D Pantea, S.P Ratti, C Riccardi, P Vitulo, H Hernandez, A.M Lopez, H Mendez, L Mendez, E Montiel, D Olaya, A Paris, J Quinones, C Rivera, W Xiong, Y Zhang, J.R Wilson, T Handler, R Mitchell, D Engh, M Hosack, W.E Johns, M Nehring, P.D Sheldon, K Stenson, E.W Vaandering, M Webster, and M Sheaff
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Physics ,Baryon ,Nuclear and High Energy Physics ,Crystallography ,Particle physics ,Omega ,High Energy Physics - Experiment - Abstract
Using data collected by the Fermilab experiment FOCUS, we measure the lifetime of the charmed baryon (\Xi_{c}^{o}) using the decay channels (\Xi_{c}^{o}\to \Xi ^{-}\pi ^{+}) and (\Xi_{c}^{o}\to \Omega ^{-}K^{+}). From a combined sample of (110\pm 17) events we find (\tau (\Xi_{c}^{o}) =~118^{+ 14}_{- 12} \pm5) fs, where the first and second errors are statistical and systematic, respectively., Comment: 13 pages, 5 figures
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- 2002
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9. Measurements of relative branching ratios of Λ+ decays into states containing Σ
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J.M. Link, M. Reyes, P.M. Yager, J.C. Anjos, I. Bediaga, C. Göbel, J. Magnin, A. Massafferri, J.M. de Miranda, I.M. Pepe, A.C. dos Reis, S. Carrillo, E. Casimiro, E. Cuautle, A. Sánchez-Hernández, C. Uribe, F. Vázquez, L. Agostino, L. Cinquini, J.P. Cumalat, B. O'Reilly, J.E. Ramirez, I. Segoni, J.N. Butler, H.W.K. Cheung, G. Chiodini, I. Gaines, P.H. Garbincius, L.A. Garren, E. Gottschalk, P.H. Kasper, A.E. Kreymer, R. Kutschke, L. Benussi, S. Bianco, F.L. Fabbri, A. Zallo, C. Cawlfield, D.Y. Kim, K.S. Park, A. Rahimi, J. Wiss, R. Gardner, A. Kryemadhi, K.H. Chang, Y.S. Chung, J.S. Kang, B.R. Ko, J.W. Kwak, K.B. Lee, K. Cho, H. Park, G. Alimonti, S. Barberis, A. Cerutti, M. Boschini, P. D'Angelo, M. DiCorato, P. Dini, L. Edera, S. Erba, M. Giammarchi, P. Inzani, F. Leveraro, S. Malvezzi, D. Menasce, M. Mezzadri, L. Moroni, D. Pedrini, C. Pontoglio, F. Prelz, M. Rovere, S. Sala, T.F. Davenport, V. Arena, G. Boca, G. Bonomi, G. Gianini, G. Liguori, M.M. Merlo, D. Pantea, S.P. Ratti, C. Riccardi, P. Vitulo, H. Hernandez, A.M. Lopez, H. Mendez, L. Mendez, E. Montiel, D. Olaya, A. Paris, J. Quinones, C. Rivera, W. Xiong, Y. Zhang, J.R. Wilson, T. Handler, R. Mitchell, D. Engh, M. Hosack, W.E. Johns, M. Nehring, P.D. Sheldon, K. Stenson, E.W. Vaandering, M. Webster, and M. Sheaff
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Physics ,Nuclear and High Energy Physics ,Particle physics ,Crystallography ,High Energy Physics::Phenomenology ,Sigma ,High Energy Physics::Experiment ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Branching (polymer chemistry) ,Lambda ,Astrophysics::Galaxy Astrophysics - Abstract
We have studied the Cabibbo suppressed decay (\Lambda_{c}^{+}\to \Sigma ^{+}K^{*0}(892)) and the Cabibbo favored decays (\Lambda_{c}^{+}\to \Sigma ^{+}K^{+}K^{-}), (\Lambda_{c}^{+}\to \Sigma ^{+}\phi) and (\Lambda_{c}^{+}\to \Xi ^{*0}(\Sigma^{+}K^{-})K^{+}) and measured their branching ratios relative to (\Lambda_{c}^{+}\to \Sigma ^{+}\pi ^{+}\pi ^{-}) to be ((7.8\pm 1.8\pm 1.3)%), ((7.1\pm 1.1\pm 1.1)%), ((8.7\pm 1.6\pm 0.6)%) and ((2.2\pm 0.6\pm 0.6)%), respectively. The first error is statistical and the second is systematic. We also report two 90% confidence level limits (\Gamma (\Lambda_{c}^{+}\to \Sigma ^{-}K^{+}\pi ^{+})/\Gamma (\Lambda_{c}^{+}\to \Sigma^{+}K^{*0}(892))
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- 2002
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10. Evidence for a narrow dip structure at 1.9 GeV/c2 in 3π+3π− diffractive photoproduction
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P.L. Frabetti, H.W.K. Cheung, J.P. Cumalat, C. Dallapiccola, J.F. Ginkel, W.E. Johns, M.S. Nehring, E.W. Vaandering, J.N. Butler, S. Cihangir, I. Gaines, P.H. Garbincius, L. Garren, S.A. Gourlay, D.J. Harding, P. Kasper, A. Kreymer, P. Lebrun, S. Shukla, M. Vittone, R. Baldini-Ferroli, S. Bianco, F.L. Fabbri, S. Sarwar, A. Zallo, C. Cawlfield, R. Culbertson, R.W. Gardner, E. Gottschalk, R. Greene, K. Park, A. Rahimi, J. Wiss, G. Alimonti, G. Bellini, M. Boschini, D. Brambilla, B. Caccianiga, L. Cinquini, M. DiCorato, P. Dini, M. Giammarchi, P. Inzani, F. Leveraro, S. Malvezzi, D. Menasce, E. Meroni, L. Milazzo, L. Moroni, D. Pedrini, L. Perasso, F. Prelz, A. Sala, S. Sala, D. Torretta, D. Buchholz, D. Claes, B. Gobbi, B. O'Reilly, J.M. Bishop, N.M. Cason, C.J. Kennedy, G.N. Kim, T.F. Lin, D.L. Puseljic, R.C. Ruchti, W.D. Shephard, J.A. Swiatek, Z.Y. Wu, V. Arena, G. Boca, G. Bonomi, C. Castoldi, G. Gianini, M. Merlo, S.P. Ratti, C. Riccardi, L. Viola, P. Vitulo, A.M. Lopez, L. Mendez, A. Mirles, E. Montiel, D. Olaya, J.E. Ramirez, C. Rivera, Y. Zhang, J.M. Link, V.S. Paolone, P.M. Yager, J.R. Wilson, J. Cao, M. Hosack, P.D. Sheldon, F. Davenport, K. Cho, K. Danyo, T. Handler, B.G. Cheon, Y.S. Chung, J.S. Kang, K.Y. Kim, K.B. Lee, and S.S. Myung
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Physics ,Nuclear and High Energy Physics ,Particle physics ,Structure (category theory) ,Fermilab ,High Energy Physics - Experiment - Abstract
A narrow dip structure has been observed at 1.9 GeV/c$^2$ in a study of diffractive photoproduction of the $~3\pi^+3\pi^-$ final state performed by the Fermilab experiment E687., Comment: The data of Figure 6 can be obtained by downloading the raw data file e687_6pi.txt. v5 (2nov2018): added Fig. 7, the 6 pion energy distribution as requested by a reader
- Published
- 2001
- Full Text
- View/download PDF
11. Measurement of the relative branching ratio BR(Ξc+→p+K−π+)/BR(Ξc+→Ξ−π+π+)
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J.M. Link, M. Reyes, P.M. Yager, J.C. Anjos, I. Bediaga, C. Göbel, J. Magnin, A. Massafferri, J.M. de Miranda, I.M. Pepe, A.C. dos Reis, F.R.A. Simão, S. Carrillo, E. Casimiro, A. Sánchez-Hernández, C. Uribe, F. Vázquez, L. Cinquini, J.P. Cumalat, B. O'Reilly, J.E. Ramirez, E.W. Vaandering, J.N. Butler, H.W.K. Cheung, I. Gaines, P.H. Garbincius, L.A. Garren, E. Gottschalk, P.H. Kasper, A.E. Kreymer, R. Kutschke, S. Bianco, F.L. Fabbri, S. Sarwar, A. Zallo, C. Cawlfield, D.Y. Kim, A. Rahimi, J. Wiss, R. Gardner, Y.S. Chung, J.S. Kang, B.R. Ko, J.W. Kwak, K.B. Lee, H. Park, G. Alimonti, M. Boschini, B. Caccianiga, P. D'Angelo, M. DiCorato, P. Dini, M. Giammarchi, P. Inzani, F. Leveraro, S. Malvezzi, D. Menasce, M. Mezzadri, L. Milazzo, L. Moroni, D. Pedrini, C. Pontoglio, F. Prelz, M. Rovere, A. Sala, S. Sala, T.F. Davenport III, L. Agostino, V. Arena, G. Boca, G. Bonomi, G. Gianini, G. Liguori, M.M. Merlo, D. Pantea, S.P. Ratti, C. Riccardi, I. Segoni, L. Viola, P. Vitulo, H. Hernandez, A.M. Lopez, H. Mendez, L. Mendez, A. Mirles, E. Montiel, D. Olaya, A. Paris, J. Quinones, C. Rivera, W. Xiong, Y. Zhang, J.R. Wilson, K. Cho, T. Handler, D. Engh, M. Hosack, W.E. Johns, M. Nehring, P.D. Sheldon, K. Stenson, M. Webster, and M. Sheaff
- Subjects
Physics ,Nuclear and High Energy Physics ,Particle physics ,Branching fraction ,Pi ,Analytical chemistry - Abstract
We report the observation of the Cabibbo suppressed decay \Xi_c^+ \to p K^-\pi^+ using data collected with the FOCUS spectrometer during the 1996--97 Fermilab fixed target run. We find a \Xi_c^+ signal peak of 202\pm35 events. We have measured the relative branching ratios BR(\Xi^+_c\to p K^-\pi^+)/BR(\Xi^+_c\to\Xi^-\pi^+\pi^+)= 0.234 \pm 0.047 \pm 0.022 and BR(\Xi^+_c\to p \bar{K}^*(892)^0)/BR(\Xi^+_c\to p K^-\pi^+)= 0.54 \pm 0.09 \pm 0.05 .
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- 2001
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12. Analysis of the decay mode
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P.L. Frabetti, G.P. Grim, V.S. Paolone, P.M. Yager, C.W. Bogart, H.W.K. Cheung, S. Culy, J.P. Cumalat, C. Dallapicola, J.F. Ginkel, S.V. Greene, W.E. Johns, M.S. Nehring, J.N. Butler, S. Cihangir, I. Gaines, P.H. Garbincius, L. Garren, S. Gourlay, D.J. Harding, P. Kasper, A. Kreymer, P. Lebrun, H. Mendez, S. Shukla, S. Bianco, F.L. Fabbri, S. Sarwar, A. Spallone, A. Zallo, R. Culbertson, R.W. Gardner, R. Greene, G. Jaross, K. Lingel, J. Wiss, B.G. Cheon, J.S. Kang, K.Y. Kim, G. Alimonti, G. Bellini, B. Caccianiga, L. Cinquini, M. Di Corato, M. Giammarchi, P. Inzani, F. Leveraro, S. Malvezzi, D. Menasce, E. Meroni, L. Moroni, D. Pedrini, L. Perasso, S. Sala, D. Torretta, M. Vittone, F. Davenport, J.F. Filasetta, D. Buchholz, D. Claes, B. Gobbi, B. O'Reilly, S. Park, R. Yoshida, J.M. Bishop, J.K. Busenitz, N.M. Cason, J.D. Cunningham, C.J. Kenney, G.N. Kim, T.F. Lin, E.J. Mannel, R.J. Mountain, D.L. Puseljic, R.C. Ruchti, W.D. Shephard, J.A. Swiatek, Z.Y. Wu, M.E. Zanabria, V. Arena, G. Boca, C. Castoldi, R. Diaferia, G. Gianini, S.P. Ratti, C. Riccardi, P. Vitulo, A. Lopez, J.R. Wilson, G.R. Blackett, M. Pisharody, T. Handler, and P.D. Sheldon
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Semileptonic decay ,Physics ,Nuclear physics ,Nuclear and High Energy Physics ,chemistry ,Branching fraction ,Mass spectrum ,Mode (statistics) ,Form factor (quantum field theory) ,chemistry.chemical_element ,Beryllium ,Neutrino - Published
- 1993
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13. Measurement of theΛc+lifetime
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P. L. Frabetti, H. W. K. Cheung, J. P. Cumalat, C. Dallapiccola, J. F. Ginkel, S. V. Greene, W. E. Johns, M. S. Nehring, J. N. Butler, S. Cihangir, I. Gaines, L. Garren, P. H. Garbincius, S. A. Gourlay, D. J. Harding, P. Kasper, A. Kreymer, P. Lebrun, S. Shukla, S. Bianco, F. L. Fabbri, S. Sarwar, A. Zallo, R. Culbertson, R. W. Gardner, R. Greene, J. Wiss, G. Alimonti, G. Bellini, B. Caccianiga, L. Cinquini, M. Di Corato, M. Giammarchi, P. Inzani, F. Leveraro, S. Malvezzi, D. Menasce, E. Meroni, L. Moroni, D. Pedrini, L. Perasso, A. Sala, S. Sala, D. Toretta, M. Vittone, D. Buchholz, D. Claes, B. Gobbi, B. O’Reilly, J. M. Bishop, N. M. Cason, C. J. Kennedy, G. N. Kim, T. F. Lin, E. J. Mannel, D. L. Puseljic, R. C. Ruchti, W. D. Shephard, J. A. Swiatek, Z. Y. Wu, V. Arena, G. Boca, C. Castoldi, R. Diaferia, G. Gianini, S. P. Ratti, C. Riccardi, P. Vitulo, A. Lopez, G. P. Grim, V. S. Paolone, P. M. Yager, J. R. Wilson, P. D. Sheldon, F. Davenport, J. F. Filasetta, G. R. Blackett, M. Pisharody, T. Handler, B. G. Cheon, J. S. Kang, and K. Y. Kim
- Subjects
Charmed baryons ,Physics ,Nuclear physics ,Particle decay ,High energy ,Meson ,TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY ,Analytical chemistry ,General Physics and Astronomy ,Charge (physics) ,Lambda ,Calculation methods - Abstract
A precise measurement of the [Lambda][sub [ital c]][sup +] lifetime using approximately 1340 fully reconstructed [Lambda][sub [ital c]][sup +][r arrow][ital pK][sup [minus]][pi][sup +] and charge conjugate decays is presented. The data were accumulated by the Fermilab high energy photoproduction experiment E687. The lifetime of the [Lambda][sub [ital c]][sup +] is measured to be 0.215[plus minus]0.016[plus minus]0.008 ps.
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- 1993
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14. Semi-inclusive analysis of multiparticle production in h--h collisions at sqrt(s)=16.7 GeV in terms of universal multifractals
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V. Arena, G. Boca, G. Corti, G. Gianini, S. P. Ratti, C. Riccardi, L. Viola, P. Vitulo, T. A. Fuess, E. S. Hafen, P. Haridas, R. I. Hulsizer, T. Lainis, I. A. Pless, T. Sung, Y. Yamamoto, Y. Eisemberg, A. Levy, M. Widgoff, D. Alyea, M. Kalelkar, R. J. Plano, P. Stamer, SALVADORI, Gianfausto, V., Arena, G., Boca, G., Corti, G., Gianini, S. P., Ratti, C., Riccardi, Salvadori, Gianfausto, L., Viola, P., Vitulo, T. A., Fue, E. S., Hafen, P., Harida, R. I., Hulsizer, T., Laini, I. A., Ple, T., Sung, Y., Yamamoto, Y., Eisemberg, A., Levy, M., Widgoff, D., Alyea, M., Kalelkar, R. J., Plano, and P., Stamer
- Published
- 1995
15. Dalitz plot analysis of D_s+ and D+ decay to pi+pi-pi+ using the K-matrix formalism
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J.M. Link, P.M. Yager, J.C. Anjos, I. Bediaga, C. Göbel, A.A. Machado, J. Magnin, A. Massafferri, J.M. de Miranda, I.M. Pepe, E. Polycarpo, A.C. dos Reis, S. Carrillo, E. Casimiro, E. Cuautle, A. Sánchez-Hernández, C. Uribe, F. Vázquez, L. Agostino, L. Cinquini, J.P. Cumalat, B. O'Reilly, I. Segoni, M. Wahl, J.N. Butler, H.W.K. Cheung, G. Chiodini, I. Gaines, P.H. Garbincius, L.A. Garren, E. Gottschalk, P.H. Kasper, A.E. Kreymer, R. Kutschke, M. Wang, L. Benussi, M. Bertani, S. Bianco, F.L. Fabbri, A. Zallo, M. Reyes, C. Cawlfield, D.Y. Kim, A. Rahimi, J. Wiss, R. Gardner, A. Kryemadhi, Y.S. Chung, J.S. Kang, B.R. Ko, J.W. Kwak, K.B. Lee, K. Cho, H. Park, G. Alimonti, S. Barberis, M. Boschini, A. Cerutti, P. D'Angelo, M. DiCorato, P. Dini, L. Edera, S. Erba, M. Giammarchi, P. Inzani, F. Leveraro, S. Malvezzi, D. Menasce, M. Mezzadri, L. Moroni, D. Pedrini, C. Pontoglio, F. Prelz, M. Rovere, S. Sala, T.F. Davenport, V. Arena, G. Boca, G. Bonomi, G. Gianini, G. Liguori, M.M. Merlo, D. Pantea, D. Lopes Pegna, S.P. Ratti, C. Riccardi, P. Vitulo, H. Hernandez, A.M. Lopez, E. Luiggi, H. Mendez, A. Paris, J.E. Ramirez, Y. Zhang, J.R. Wilson, T. Handler, R. Mitchell, D. Engh, M. Hosack, W.E. Johns, M. Nehring, P.D. Sheldon, K. Stenson, E.W. Vaandering, M. Webster, and M. Sheaff
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Physics ,Nuclear and High Energy Physics ,Particle physics ,Meson ,Scattering ,Dalitz plot ,FOS: Physical sciences ,High Energy Physics - Experiment ,Nuclear physics ,Formalism (philosophy of mathematics) ,High Energy Physics - Experiment (hep-ex) ,High Energy Physics::Experiment ,Spectroscopy ,K matrix ,Matrix formalism - Abstract
FOCUS results from Dalitz plot analysis of D_s+ and D+ to pi+pi-pi+ are presented. The K-matrix formalism is applied to charm decays for the first time to fully exploit the already existing knowledge coming from the light-meson spectroscopy experiments. In particular all the measured dynamics of the S-wave pipi scattering, characterized by broad/overlapping resonances and large non-resonant background, can be properly included. This paper studies the extent to which the K-matrix approach is able to reproduce the observed Dalitz plot and thus help us to understand the underlying dynamics. The results are discussed, along with their possible implications on the controversial nature of the sigma meson., To be submitted to Phys.Lett.B A misprint corrected in formula 3
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- 2003
16. Charm system tests of CPT and Lorentz invariance with FOCUS
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J.M. Link, M. Reyes, P.M. Yager, J.C. Anjos, I. Bediaga, C. Göbel, J. Magnin, A. Massafferri, J.M. de Miranda, I.M. Pepe, A.C. dos Reis, S. Carrillo, E. Casimiro, E. Cuautle, A. Sánchez-Hernández, C. Uribe, F. Vázquez, L. Agostino, L. Cinquini, J.P. Cumalat, B. O'Reilly, J.E. Ramirez, I. Segoni, M. Wahl, J.N. Butler, H.W.K. Cheung, G. Chiodini, I. Gaines, P.H. Garbincius, L.A. Garren, E. Gottschalk, P.H. Kasper, A.E. Kreymer, R. Kutschke, L. Benussi, S. Bianco, F.L. Fabbri, A. Zallo, C. Cawlfield, D.Y. Kim, K.S. Park, A. Rahimi, J. Wiss, R. Gardner, A. Kryemadhi, K.H. Chang, Y.S. Chung, J.S. Kang, B.R. Ko, J.W. Kwak, K.B. Lee, K. Cho, H. Park, G. Alimonti, S. Barberis, M. Boschini, A. Cerutti, P. D'Angelo, M. DiCorato, P. Dini, L. Edera, S. Erba, M. Giammarchi, P. Inzani, F. Leveraro, S. Malvezzi, D. Menasce, M. Mezzadri, L. Moroni, D. Pedrini, C. Pontoglio, F. Prelz, M. Rovere, S. Sala, T.F. Davenport, V. Arena, G. Boca, G. Bonomi, G. Gianini, G. Liguori, M.M. Merlo, D. Pantea, D.L. Pegna, S.P. Ratti, C. Riccardi, P. Vitulo, H. Hernandez, A.M. Lopez, E. Luiggi, H. Mendez, A. Paris, J. Quinones, W. Xiong, Y. Zhang, J.R. Wilson, T. Handler, R. Mitchell, D. Engh, M. Hosack, W.E. Johns, M. Nehring, P.D. Sheldon, K. Stenson, E.W. Vaandering, M. Webster, and M. Sheaff
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Physics ,Particle physics ,Nuclear and High Energy Physics ,Meson ,Lorentz transformation ,media_common.quotation_subject ,FOS: Physical sciences ,Lorentz covariance ,Asymmetry ,Standard Model ,High Energy Physics - Experiment ,symbols.namesake ,High Energy Physics - Experiment (hep-ex) ,Standard-Model Extension ,symbols ,Charm (quantum number) ,media_common - Abstract
We have performed a search for CPT violation in neutral charm meson oscillations. While flavor mixing in the charm sector is predicted to be small by the Standard Model, it is still possible to investigate CPT violation through a study of the proper time dependence of a CPT asymmetry in right-sign decay rates for $D^0\to K^-\pi^+$ and $\d0b\to K^+\pi^-$. This asymmetry is related to the CPT violating complex parameter $\xi$ and the mixing parameters $x$ and $y$: $A_{CPT}\propto{\rm Re} \xi y-{\rm Im} \xi x$ . Our 95% confidence level limit is $-0.0068, Comment: 12 pages 5 figures
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- 2003
17. A high statistics measurement of the Lambda(+)(c) lifetime
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J M, Link, M, Reyes, P M, Yager, J C, Anjos, I, Bediaga, C, Göbel, J, Magnin, A, Massafferi, J M, de Miranda, I M, Pepe, A C, dos Reis, S, Carrillo, E, Casimiro, E, Cuautle, A, Sánchez-Hernández, C, Uribe, F, Vazquez, L, Agostino, L, Cinquini, J P, Cumalat, B, O'Reilly, J E, Ramirez, I, Segoni, J N, Butler, H W K, Cheung, I, Gaines, P H, Garbincius, L A, Garren, E, Gottschalk, P H, Kasper, A E, Kreymer, R, Kutschke, S, Bianco, F L, Fabbri, A, Zallo, C, Cawlfield, D Y, Kim, A, Rahimi, J, Wiss, R, Gardner, A, Kryemadhi, Y S, Chung, J S, Kang, B R, Ko, J W, Kwak, K B, Lee, H, Park, G, Alimonti, M, Boschini, P, D'Angelo, M, DiCorato, P, Dini, M, Giammarchi, P, Inzani, F, Leveraro, S, Malvezzi, D, Menasce, M, Mezzadri, L, Milazzo, L, Moroni, D, Pedrini, C, Pontoglio, F, Prelz, M, Rovere, S, Sala, T F, Davenport, V, Arena, G, Boca, G, Bonomi, G, Gianini, G, Liguori, M M, Merlo, D, Pantea, S P, Ratti, C, Riccardi, P, Vitulo, H, Hernandez, A M, Lopez, E, Luiggi, H, Mendez, L, Mendez, A, Mirles, E, Montiel, D, Olaya, A, Paris, J, Quinones, C, Rivera, W, Xiong, Y, Zhang, J R, Wilson, K, Cho, T, Handler, R, Mitchell, D, Engh, M, Hosack, W E, Johns, M, Nehring, P D, Sheldon, K, Stenson, E W, Vaandering, M, Webster, and M, Sheaff
- Abstract
A high statistics measurement of the Lambda(+)(c) lifetime from the Fermilab fixed-target FOCUS photoproduction experiment is presented. We describe the analysis technique with particular attention to the determination of the systematic uncertainty. The measured value of 204.6 +/- 3.4 (stat) +/- 2.5 (syst) fs from 8034 +/- 122 Lambda(+)(c)--pK(-)pi(+) decays represents a significant improvement over the present world average.
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- 2002
18. Light Quark Spectroscopy Results from FOCUS and E687
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Bianco, Stefano, J.M. Link, L. Agostino, G. Alimonti, J.C. Anjos, V. Arena, R. Baldini-Ferroli, S. Barberis, I. Bediaga, G. Bellini, L. Benussi, J.M. Bishop, G. Boca, G. Bonomi, M. Boschini, D. Brambilla, D. Buchholz, J.N. Butler, B. Caccianiga, A. Calandrino, S. Carrillo, E. Casimiro, N.M. Cason, C. Castoldi, C. Cawlfield, A. Cerutti, H.W.K. Cheung, G. Chiodini, K. Cho, Y.S. Chung, S. Cihangir, L. Cinquini, D. Claes, N. Copty, R. Culbertson, J.P. Cumalat, C. Dallapiccola, P. D'Angelo, T.F. Davenport III, J.M. De Miranda, M. DiCorato, P. Dini, A.C. Dos Reis, L. Edera, D. Engh, C.J. Kennedy, S. Erba, F.L. Fabbri, P.L. Frabetti, I. Gaines, P.H. Garbincius, R. Gardner, L.A. Garren, M. Giammarchi, G. Gianini, J.F. Ginkel, B. Gobbi, C. Göbel, E. Gottschalk, S.A. Gourlay, R. Greene, T. Handler, D.J. Harding, H. Hernandez, M. Hosack, P. Inzani, W.E. Johns, J.S. Kang, P.H. Kasper, D.Y. Kim, G.N. Kim, B.R. Ko, A.E. Kreymer, A. Kryemadhi, R. Kutschke, J.W. Kwak, Y. Kwon, P. Lebrun, K.B. Lee, F. Leveraro, G. Liguori, T.F. Lin, A.M. Lopez, J. Magnin, S. Malvezzi, A. Massafferri, D. Menasce, H. Mendez, L. Mendez, M. Merlo, E. Meroni, M. Mezzadri, L. Milazzo, A. Mirles, E. Montiel, L. Moroni, S.S. Myung, M.S. Nehring, D. Olaya, B. O'Reilly, D. Pantea, V.S. Paolone, K.S. Park, H. Park, D. Pedrini, I.M. Pepe, L. Perasso, C. Pontoglio, F. Prelz, M. Purohit, D.L. Puseljic, J. Quinones, A. Rahimi, J.E. Ramirez, S.P. Ratti, M. Reyes, C. Riccardi, C. Rivera, M. Rovere, R.C. Ruchti, S. Sala, A. Sala, M. Sales, A. Sánchez-Hernández, I. Segoni, M. Sheaff, P.D. Sheldon, W.D. Shephard, S. Shukla, F. Simõ, K. Stenson, J.A. Swiatek, P. Torre, D. Torretta, C. Uribe, E.W. Vaandering, F. Vasquez, L. Viola, M. Vittone, P. Vitulo, M.S. Webster, J.R. Wilson, J. Wiss, Z.Y. Wu, P.M. Yager, A. Zallo, and Y. Zhang
- Abstract
Using the FOCUS spectrometer (experiments 687 and 831 at Fermilab) we confirm the existence of a diffractively photoproduced enhancement in K^+K^- at 1750 MeV/c^2 with nearly 100 times the statistics of previous experiments. We also observe a narrow dip structure at 1.9 GeV/c2 in a study of diffractive photoproduction of the 3π^+3π^- final state.
- Published
- 2002
- Full Text
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19. Search for CP violation in the decays D+--K(S)pi+ and D+--K(S)K+
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J M, Link, M, Reyes, P M, Yager, J C, Anjos, I, Bediaga, C, Göbel, J, Magnin, A, Massafferri, J M, de Miranda, I M, Pepe, A C, dos Reis, S, Carrillo, E, Casimiro, A, Sánchez-Hernández, C, Uribe, F, Vázquez, L, Cinquini, J P, Cumalat, B, O'Reilly, J E, Ramirez, E W, Vaandering, J N, Butler, H W K, Cheung, I, Gaines, P H, Garbincius, L A, Garren, E, Gottschalk, P H, Kasper, A E, Kreymer, R, Kutschke, S, Bianco, F L, Fabbri, A, Zallo, C, Cawlfield, D Y, Kim, A, Rahimi, J, Wiss, R, Gardner, A, Kryemadhi, Y S, Chung, J S, Kang, B R, Ko, J W, Kwak, K B, Lee, H, Park, G, Alimonti, M, Boschini, P, D'Angelo, M, DiCorato, P, Dini, M, Giammarchi, P, Inzani, F, Leveraro, S, Malvezzi, D, Menasce, M, Mezzadri, L, Milazzo, L, Moroni, D, Pedrini, C, Pontoglio, F, Prelz, M, Rovere, S, Sala, T F, Davenport, L, Agostino, V, Arena, G, Boca, G, Bonomi, G, Gianini, G, Liguori, M M, Merlo, D, Pantea, S P, Ratti, C, Riccardi, I, Segoni, P, Vitulo, H, Hernandez, A M, Lopez, H, Mendez, L, Mendez, A, Mirles, E, Montiel, D, Olaya, A, Paris, J, Quinones, C, Rivera, W, Xiong, Y, Zhang, J R, Wilson, K, Cho, T, Handler, R, Mitchell, D, Engh, M, Hosack, W E, Johns, M, Nehring, P D, Sheldon, K, Stenson, M, Webster, and M, Sheaff
- Abstract
A high-statistics sample of photoproduced charm from the FOCUS experiment has been used to search for direct CP violation in the decay rates for D+--K(S)pi+ and D+--K(S)K+. We have measured the following asymmetry parameters relative to D+--K-pi+pi+: A(CP)(K(S)pi+) = (-1.6+/-1.5+/-0.9)%, A(CP)(K(S)K+) = (+6.9+/-6.0+/-1.5)%, and A(CP)(K(S)K+) = (+7.1+/-6.1+/-1.2)% relative to D+--K(S)pi+. We have also measured the relative branching ratios and found Gamma(D+--K(0)pi+)/Gamma(D+--K-pi+pi+) = (30.60+/-0.46+/-0.32)%, Gamma(D+--K(0)K+)/Gamma(D+--K-pi+pi+) = (6.04+/-0.35+/-0.30)%, and Gamma(D+--K(0)K+)/Gamma(D+--K(0)pi+) = (19.96+/-1.19+/-0.96)%.
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- 2001
20. Measurement of the branching ratios of D+ and D-s(+) hadronic decays to four-body final states containing a K-S
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J M, Link, M, Reyes, P M, Yager, J C, Anjos, I, Bediaga, C, Göbel, J, Magnin, A, Massafferi, J M, de Miranda, I M, Pepe, A C, dos Reis, F R, Simão, S, Carrillo, E, Casimiro, A, Sánchez-Hernández, C, Uribe, F, Vázquez, L, Cinquini, J P, Cumalat, B, O'Reilly, J E, Ramirez, E W, Vaandering, J N, Butler, H W, Cheung, I, Gaines, P H, Garbincius, L A, Garren, E, Gottschalk, P H, Kasper, A E, Kreymer, R, Kutschke, S, Bianco, F L, Fabbri, S, Sarwar, A, Zallo, C, Cawlfield, D Y, Kim, A, Rahimi, J, Wiss, R, Gardner, Y S, Chung, J S, Kang, B R, Ko, J W, Kwak, K B, Lee, H, Park, G, Alimonti, M, Boschini, B, Caccianiga, P, D'Angelo, M, DiCorato, P, Dini, M, Giammarchi, P, Inzani, F, Leveraro, S, Malvezzi, D, Menasce, M, Mezzadri, L, Milazzo, L, Moroni, D, Pedrini, C, Pontoglio, F, Prelz, M, Rovere, A, Sala, S, Sala, T F, Davenport, L, Agostino, V, Arena, G, Boca, G, Bonomi, G, Gianini, G, Liguori, M, Merlo, D, Pantea, S P, Ratti, C, Riccardi, I, Segoni, L, Viola, P, Vitulo, H, Hernandez, A M, Lopez, H, Mendez, L, Mendez, A, Mirles, E, Montiel, D, Olaya, A, Paris, J, Quinones, C, Rivera, W, Xiong, Y, Zhang, J R, Wilson, K, Cho, T, Handler, D, Engh, M, Hosack, W E, Johns, M, Nehring, P D, Sheldon, K, Stenson, M, Webster, and M, Sheaff
- Abstract
We have studied hadronic four-body decays of D(+) and D(+)(s) mesons with a K(S) in the final state using data recorded during the 1996-1997 fixed-target run of the Fermilab high energy photoproduction experiment FOCUS. We report a new branching ratio measurement of gamma(D(+)--K(S)K-pi(+)pi(+))/gamma(D(+)--K(S)pi(+)pi(+)pi(-)) = 0.0768+/-0.0041+/-0.0032. We make the first observation of three new decay modes with branching ratios gamma(D(+)--K(S)K+pi(+)pi(-))/gamma(D(+)--K(S)pi(+)pi(+)pi(-)) = 0.0562+/-0.0039+/-0.0040, gamma(D(+)--K(S)K+K-pi(+))/gamma(D(+)--K(S)pi(+)pi(+)pi(-)) = 0.0077+/-0.0015+/-0.0009, and gamma(D(+)(s)--K(S)K+pi(+)pi(-))/gamma(D(+)(s)--K(S)K-pi(+)pi(+)) = 0.586+/-0.052+/-0.043, where in each case the first error is statistical and the second error is systematic.
- Published
- 2001
21. Evidence for a narrouw dip structure at 1.9 GeV/ c^2 in 3pi^+3p^- Diffractive Photoproduction
- Author
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P.L. Frabetti, H.W.K. Cheung, J.P. Cumalat, C. Dallapiccola, J.F. Ginkel, W.E. Johns, M.S. Nehring, E.W. Vaandering, J.N. Butler, S. Cihangir, I. Gaines, P.H. Garbincius, L. Garren, S.A. Gourlay, D.J. Harding, P. Kasper, A. Kreymer, P. Lebrun, S. Shukla, M. Vittone, R. Baldini-Ferroli, S. Bianco, F.L. Fabbri, S. Sarwar, A. Zallo, C. Cawlfield, R. Culbertson, R.W. Gardner, E. Gottschalk, R. Greene, K.Park, A. Rahimi, J. Wiss, G. Alimonti, G. Bellini, M. Boschini, D. Brambilla, B. Caccianiga, L. Cinquini, M. DiCorato, P. Dini, M. Giammarchi, P. Inzani, F. Leveraro, S. Malvezzi, D. Menasce, E. Meroni, L. Milazzo, L. Moroni, D. Pedrini, L. Perasso, F. Prelz, A. Sala, S. Sala, D. Torretta, D. Buchholz, D. Claes, B. Gobbi, B. O’Reilly, J.M. Bishop, N.M. Cason, C.J. Kenned, G.N. Kim, T.F. Lin, D.L. Puseljic, R.C. Ruchti, W.D. Shephard, J.A. Swiatek, Z.Y. Wu, V. Arena, G. Boca, G. Bonomi, C. Castoldi, G. Gianini, M. Merlo, S.P. Ratti, C. Riccardi, L. Viola, P. Vitulo, A.M. Lopez, L. Mendez, A. Mirles, E. Montiel, D. Olaya, J.E. Ramirez, C.Rivera, Y. Zhang, J.M. Link, V.S. Paolone, P.M. Yager, J.R. Wilson, J. Cao, M. Hosack, P.D. Sheldon, F. Davenport, K. Cho, K. Danyo, T. Handler, B.G. Cheon, Y.S. Chung, J.S. Kang, K.Y. Kim, K.B. Lee, and S.S. Myung
- Abstract
A narrow dip structure has been observed at 1.9 GeV/c^2 in a study of diffractive photo-production of the 3pi^+ 3 pi^- final state performed by the Fermilab experiment E687.
- Published
- 2001
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22. New Focus Results on Charm Mixing and CP Violation
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S. Bianco, 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, A.C. Dos Reis, F. SimãO, S. Carrillo, E. Casimiro, H. Mendez, A.Sànchez-Hernàndez, C. Uribe, F. Vasquez, L. Cinquini, J.P. Cumalat, J.E. Ramirez, B. O'Reilly, E.W. Vaandering, J.N. Butler, H.W.K. Cheung, I. Gaines, P.H. Garbincius, L.A. Garren, E. Gottschalk, S.A. Gourlay, P.H. Kasper, A.E. Kreymer, R. Kutschke, F.L. Fabbri, S. Sarwar, A. Zallo, C. Cawlfield, D.Y. Kim, K.S. Park, A. Rahimi, J. Wiss, R. Gardner, Y.S. Chung, J.S. Kang, B.R. Ko, J.W. Kwak, K.B. Lee, S.S. Myung, H. Park, G. Alimonti, M. Boschini, D. Brambilla, B. Caccianiga, A. Calandrino, P. D'Angelo, M. DiCorato, P. Dini, M. Giammarchi, P. Inzani, F. Leveraro, S. Malvezzi, D. Menasce, M. Mezzadri, L. Milazzo, L. Moroni, D. Pedrini, F. Prelz, M. Rovere, A. Sala, S. Sala, T.F. Davenport III, V. Arena, G. Boca, G. Bonomi, G. Gianini, G. Liguori, M. Merlo, D. Pantea, S.P. Ratti, C. Riccardi, P. Torre, L. Viola, P. Vitulo, H. Hernandez, A.M. Lopez, L. Mendez, A. Mirles, E. Montiel, D. Olaya, J. Quinones, C. Rivera, Y. Zhang, N. Copty, M. Purohit, J.R. Wilson, K. Cho, T. Handler, D. Engh, W.E. Johns, M. Hosack, M.S. Nehring, M. Sales, P.D. Sheldon, K. Stenson, M.S. Webster, M. Sheaff, and Y. Kwon
- Abstract
We present a summary of recent results on CP violation and mixing in the charm quark sector based on a high statistics sample collected by photoproduction experiment FOCUS (E831 at Fermilab). We have measured the difference in lifetimes for the D0 decays: D0→K−π+ and D0→K−K+. This translates into a measurement of the yCP mixing parameter in the $\d0d0$ system, under the assumptions that K−K+ is an equal mixture of CP odd and CP even eigenstates, and CP violation is negligible in the neutral charm meson system. We verified the latter assumption by searching for a CP violating asymmetry in the Cabibbo suppressed decay modes D+→K−K+π+, D0→K−K+ and D0→π−π+. We show preliminary results on a measurement of the branching ratio Γ(D∗+→π+(K+π−))/Γ(D∗+→π+(K−π+)).
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- 2000
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23. Preliminary Results on Charmed Meson Spectroscopy
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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, A.C. Dos Reis, F. Simão, S. Carrillo, E. Casimiro, H. Mendez, A.Sánchez-Hernández, C. Uribe, F. Vasquez, L. Cinquini, J.P. Cumalat, J.E. Ramirez, B. O'Reilly, E.W. Vaandering, J.N. Butler, H.W.K. Cheung, I. Gaines, P.H. Garbincius, L.A. Garren, E. Gottschalk, S.A. Gourlay, P.H. Kasper, A.E. Kreymer, R. Kutschke, S. Bianco, F.L. Fabbri, S. Sarwar, A. Zallo, C. Cawlfield, D.Y. Kim, K.S. Park, A. Rahimi, J. Wiss, R. Gardner, Y.S. Chung, J.S. Kang, B.R. Ko, J.W. Kwak, K.B. Lee, S.S. Myung, H. Park, G. Alimonti, M. Boschini, D. Brambilla, B. Caccianiga, A. Calandrino, P. D'Angelo, M. DiCorato, P. Dini, M. Giammarchi, P. Inzani, F. Leveraro, S. Malvezzi, D. Menasce, M. Mezzadri, L. Milazzo, L. Moroni, D. Pedrini, F. Prelz, M. Rovere, A. Sala, S. Sala, T.F. Davenport III, V. Arena, G. Boca, G. Bonomi, G. Gianini, G. Liguori, M. Merlo, D. Pantea, S.P. Ratti, C. Riccardi, P. Torre, L. Viola, P. Vitulo, H. Hernandez, A.M. Lopez, L. Mendez, A. Mirles, E. Montiel, D. Olaya, J. Quinones, C. Rivera, Y. Zhang, N. Copty, M. Purohit, J.R. Wilson, K. Cho, T. Handler, D. Engh, W.E. Johns, M. Hosack, M.S. Nehring, M. Sales, P.D. Sheldon, K. Stenson, M.S. Webster, M. Sheaff, and Y. Kwon
- Subjects
High Energy Physics::Phenomenology ,High Energy Physics::Experiment - Abstract
We report the preliminary measurement by the FOCUS Collaboration (E831 at Fermilab) of masses and widths of the L=1 charm mesons D*^+_2 and D*^+_2 . The fit of the invariant mass distribution requires an additional term to account for a broad structure over background.
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- 2000
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24. Landscape-aware location-privacy protection in location-based services
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Ardagna, C, Cremonini, M, Gianini, G, C.A. Ardagna, M. Cremonini, G. Gianini, Ardagna, C, Cremonini, M, Gianini, G, C.A. Ardagna, M. Cremonini, and G. Gianini
- Abstract
Mobile network providers have developed a variety of location-based services (LBSs), such as friend-finder, point of interest services, emergency rescue and many other safety and security services. The protection of location-privacy has consequently become a key aspect to the success of LBSs, since users consider their own physical location and movements highly privacy-sensitive, and demand for solutions able to protect such an information in a variety of environments. The idea behind location-privacy protection is that the individual should be able to set the level at which the location information is released to avoid undesired exploitation by a potential attacker: one of the approaches to this problem is given by the application of spatial obfuscation techniques, actuated by a trusted agent, and consisting in artificial perturbations of the location information collected by sensing technologies, before its disclosure to third parties. In many situations, however, landscape/map information can help a third party to perform Bayesian inference over spatially obfuscated data and to refine the user's location estimate up to a violation of the original user's location-privacy requirements. The goal of this paper is to provide a map-dependent obfuscation procedure that enables the release of the maximum possible user's location information, that does not lead to a violation of the original user's location-privacy requirements, even when refined through map-based inference.
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- 2009
25. Cumulant to Factorial Moment Ratio and Multiplicity Distributions
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G. Gianini, I. M. Dremin, V. A. Nechitailo, B. B. Levchenko, V. Arena, G. Boca, S. Malvezzi, M. Merlo, S. P. Ratti, C. Riccardi, G. Salvadori, L. Viola, and P. Vitulo
- Subjects
High Energy Physics - Phenomenology ,High Energy Physics - Phenomenology (hep-ph) ,FOS: Physical sciences - Abstract
The ratio of cumulant to factorial moments of multiplicity distribu- tions has been calculated for e+e- and hh data in a wide range of energies. As a function of the rank it exhibits a regular behaviour with a steep descent and two negative minima. This behaviour is not accounted for by NBD, that leads to a monotonically decreasing positive-defined ratio. A rough comparison with QCD predictions is done: data cannot be accounted for by LLA nor by DLA; only some next-to-next to leading predictions are in qualitative agreement with them. Such features being appropriate for hard processes and high energies, it is a surpri- se to find them not only in e+e- annihilation, but also in soft hh collisions., to appear on the proceedings of the XXIII International Symposium on Multiparticle Dynamics, Aspen (CO), USA September 1993. Latex file, 5 pages, 2 figures not included, available upon request. Pavia preprint FNT/AE 93-47
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- 1993
26. Study of hadronic five-body decays of charmed mesons involving KS0
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J.M. Link, P.M. Yager, J.C. Anjos, I. Bediaga, C. Göbel, A.A. Machado, J. Magnin, A. Massafferri, J.M. de Miranda, I.M. Pepe, E. Polycarpo, A.C. dos Reis, S. Carrillo, E. Casimiro, E. Cuautle, A. Sánchez-Hernández, C. Uribe, F. Vázquez, L. Agostino, L. Cinquini, J.P. Cumalat, J. Jacobs, B. O'Reilly, I. Segoni, M. Wahl, J.N. Butler, H.W.K. Cheung, G. Chiodini, I. Gaines, P.H. Garbincius, L.A. Garren, E. Gottschalk, P.H. Kasper, A.E. Kreymer, R. Kutschke, M. Wang, L. Benussi, M. Bertani, S. Bianco, F.L. Fabbri, A. Zallo, M. Reyes, C. Cawlfield, D.Y. Kim, A. Rahimi, J. Wiss, R. Gardner, A. Kryemadhi, Y.S. Chung, J.S. Kang, B.R. Ko, J.W. Kwak, K.B. Lee, K. Cho, H. Park, G. Alimonti, S. Barberis, M. Boschini, A. Cerutti, P. D'Angelo, M. DiCorato, P. Dini, L. Edera, S. Erba, M. Giammarchi, P. Inzani, F. Leveraro, S. Malvezzi, D. Menasce, M. Mezzadri, L. Moroni, D. Pedrini, C. Pontoglio, F. Prelz, M. Rovere, S. Sala, T.F. Davenport, V. Arena, G. Boca, G. Bonomi, G. Gianini, G. Liguori, M.M. Merlo, D. Pantea, D. Lopes Pegna, S.P. Ratti, C. Riccardi, P. Vitulo, H. Hernandez, A.M. Lopez, E. Luiggi, H. Mendez, A. Paris, J.E. Ramirez, Y. Zhang, J.R. Wilson, T. Handler, R. Mitchell, D. Engh, M. Hosack, W.E. Johns, M. Nehring, P.D. Sheldon, K. Stenson, E.W. Vaandering, M. Webster, and M. Sheaff
- Subjects
Nuclear physics ,Physics ,High Energy Physics - Experiment (hep-ex) ,Nuclear and High Energy Physics ,Meson ,Branching fraction ,Hadron ,Mass spectrum ,FOS: Physical sciences ,Substructure ,High Energy Physics - Experiment - Abstract
We study the decay of D0 and D+s mesons into five-body final states including a KS0 and report the discovery of the decay mode Ds+→KS0KS0π+π+π−. The branching ratio for the new mode is Γ(D s + →K S 0 K S 0 π + π − π + ) Γ(D s + →K S 0 K − π + π + ) =0.102±0.029±0.029 . We also determine the branching ratio of Γ(D 0 →K S 0 π + π + π − π − ) Γ(D 0 →K S 0 π + π − ) =0.095±0.005±0.007 as well as an upper limit for Γ(D 0 →K S 0 K − π + π + π − ) Γ(D 0 →K S 0 π + π + π − π − ) (90% CL). An analysis of the resonant substructure for D0→KS0π+π+π−π− is also performed.
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27. Cumulant to factorial moment ratio and multiplicity data
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L. Viola, Gianluigi Boca, Gianfausto Salvadori, Sandra Malvezzi, M. M. Merlo, V. Arena, Sergio P Ratti, Igor Dremin, Paolo Vitulo, Cristina Riccardi, Gabriele Gianini, I. M., Dremin, V., Arena, G., Boca, G., Gianini, S., Malvezzi, M., Merlo, S. P., Ratti, C., Riccardi, Salvadori, Gianfausto, L., Viola, and P., Vitulo
- Subjects
Physics ,Nuclear and High Energy Physics ,Particle physics ,Factorial ,hep-ex ,Negative binomial distribution ,FOS: Physical sciences ,Perturbative QCD ,hep-ph ,Multiplicity (mathematics) ,High Energy Physics - Experiment ,High Energy Physics - Experiment (hep-ex) ,High Energy Physics - Phenomenology ,High Energy Physics - Phenomenology (hep-ph) ,Statistical physics ,Cumulant ,Scaling ,Factorial moment - Abstract
The ratio of cumulant to factorial moments of experimental multiplicity distributions has been calculated for $e^{+}e^{-}$ and $hh$ interactions in a wide range of energies. As a function of the rank it exhibits an initial steep decrease and a series of oscillations around zero. Those features cannot be reproduced by the Negative Binomial Distribution. A comparable behaviour is instead predicted in high-energy perturbative QCD. The presence of a qualitatively similar behaviour for different processes and in wide energy intervals suggests speaking of an approximate scaling of the cumulant to factorial moment ratio., Submitted to Phys.Lett.B; Latex document, 11 pages, 4 PostScript figures appended. Preprint number FIAN/TD-15/93 also FNT/AE 93-25
- Published
- 1994
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28. Study of intermittency in h-h collisions at $$\sqrt s $$ =16.7 GeV
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V. Arena, M. Widgoff, T. Sung, G. Corti, E. S. Hafen, Y. Eisenberg, R. K. Yamamoto, R.J. Plano, Gianluigi Boca, A. Levy, P. E. Stamer, T. A. Fuess, Gianfausto Salvadori, M. Kalelkar, S. P. Ratti, Gabriele Gianini, P. Haridas, T. Lainis, D. Alyea, R. Diaferia, I. A. Pless, R. I. Hulsizer, V., Arena, G., Boca, G., Corti, R., Diaferia, G., Gianini, S., Ratti, Salvadori, Gianfausto, T., Fue, E., Hafen, P., Harida, R., Hulsizer, T., Laini, I., Ple, T., Sung, R., Yamamoto, Y., Eisenberg, A., Levy, M., Widgoff, D., Alyea, R., Plano, M., Kalelkar, and P., Stamer
- Subjects
Physics ,Particle physics ,Hadron ,Tevatron ,law.invention ,Nuclear physics ,law ,Intermittency ,Pseudorapidity ,Bubble chamber ,High Energy Physics::Experiment ,Rapidity ,Fermilab ,Multiplicity (chemistry) ,Nuclear Experiment - Abstract
Charged-particle multiplicity distributions from hadron-hadron collisions at $$\sqrt s $$ =16.7 GeV are analyzed in rapidity, pseudorapidity and azimuthal angle intervals. The data—fully reconstructed events—were taken in the rapid-cycling Bubble Chamber of the International Hybrid Spectrometer Consortium exposed to a hadron beam (147 GeV/c momentum) of the Tevatron at Fermilab. The factorial moments of the multiplicity distributions increase with decreasing rapidity interval. The energy dependence of the slopes in h-h collisions is discussed. Suitable phase-space cuts show that most of the intermittency effect stems from low-transverse-momentum particles. In the two-dimensional analysis (rapidity azimuthal angle) we find a weak enhancement of the slope values, more in agreement with the observations by the NA22 experiment, rather than the observations in e+e− by the HRS collaboration.
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- 1992
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29. Universal multifractal approach to intermittency in high energy physics
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Daniel Schertzer, Sergio P Ratti, Shaun Lovejoy, Gianfausto Salvadori, Gabriele Gianini, S. P., Ratti, Salvadori, Gianfausto, G., Gianini, S., Lovejoy, and D., Schertzer
- Subjects
Physics ,Particle physics ,Theoretical physics ,Physics and Astronomy (miscellaneous) ,law ,Intermittency ,Multifractal system ,Statistical physics ,Engineering (miscellaneous) ,law.invention ,Parametric statistics - Abstract
A new stochastic approach to intermittency in high energy physics is proposed. It yields to intermittency exponents defined independently of phase-space dimensions; their role in the calculation of generalized moments is discussed. A straightforward application of universal multifractals is suggested and a new parametric technique for phase-space analysis is provided.
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- 1994
30. A fractal analysis of multiparticle production in hadron-hadron collisions at sqrt(s)=16.7 GeV
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R. I. Hulsizer, P. E. Stamer, Gianfausto Salvadori, T. A. Fuess, D. Alyea, R.J. Plano, Gabriele Gianini, Y. Eisenberg, Gianluigi Boca, T. Sung, M. Kalelkar, I. A. Pless, S. P. Ratti, Y. Yamamoto, E. Hafen, T. Lainis, A. Levy, M. Widgoff, P. Haridas, G. Corti, G., Boca, G., Corti, G., Gianini, S., Ratti, Salvadori, Gianfausto, T., Fue, E., Hafen, P., Harida, R., Hulsizer, I., Ple, T., Sung, T., Laini, Y., Yamamoto, Y., Eisenberg, A., Levy, M., Widgoff, D., Alyea, R., Plano, M., Kalelkar, and P., Stamer
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Physics ,Particle physics ,Fractal ,High Energy Physics::Phenomenology ,Hadron ,High Energy Physics::Experiment ,Production (computer science) ,Statistical physics ,Nuclear Experiment ,Fractal analysis ,Interpretation (model theory) - Abstract
Some fractal aspects of multiparticle production in hadron-hadron interactions at\(\sqrt s \)=16.7 GeV. are investigated through an analysis of the momentsGqv andGqh suggested by Hwa. The validity of the interpretation of the data in this framework is investigated and discussed.
- Published
- 1992
31. A roadmap for improving data quality through standards for collaborative intelligence in human-robot applications.
- Author
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Mehak S, Ramos IF, Sagar K, Ramasubramanian A, Kelleher JD, Guilfoyle M, Gianini G, Damiani E, and Leva MC
- Abstract
Collaborative intelligence (CI) involves human-machine interactions and is deemed safety-critical because their reliable interactions are crucial in preventing severe injuries and environmental damage. As these applications become increasingly data-driven, the reliability of CI applications depends on the quality of data, shaping the system's ability to interpret and respond in diverse and often unpredictable environments. In this regard, it is important to adhere to data quality standards and guidelines, thus facilitating the advancement of these collaborative systems in industry. This study presents the challenges of data quality in CI applications within industrial environments, with two use cases that focus on the collection of data in Human-Robot Interaction (HRI). The first use case involves a framework for quantifying human and robot performance within the context of naturalistic robot learning, wherein humans teach robots using intuitive programming methods within the domain of HRI. The second use case presents real-time user state monitoring for adaptive multi-modal teleoperation, that allows for a dynamic adaptation of the system's interface, interaction modality and automation level based on user needs. The article proposes a hybrid standardization derived from established data quality-related ISO standards and addresses the unique challenges associated with multi-modal HRI data acquisition. The use cases presented in this study were carried out as part of an EU-funded project, Collaborative Intelligence for Safety-Critical Systems (CISC)., Competing Interests: Authors Shakra Mehak and Michael Gulifoyle were employed by Pilz Ireland Industrial Automation. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2024 Mehak, Ramos, Sagar, Ramasubramanian, Kelleher, Guilfoyle, Gianini, Damiani and Leva.)
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- 2024
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32. Neuroergonomic Attention Assessment in Safety-Critical Tasks: EEG Indices and Subjective Metrics Validation in a Novel Task-Embedded Reaction Time Paradigm.
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Bjegojević B, Pušica M, Gianini G, Gligorijević I, Cromie S, and Leva MC
- Abstract
Background/Objectives: This study addresses the gap in methodological guidelines for neuroergonomic attention assessment in safety-critical tasks, focusing on validating EEG indices, including the engagement index (EI) and beta/alpha ratio, alongside subjective ratings. Methods: A novel task-embedded reaction time paradigm was developed to evaluate the sensitivity of these metrics to dynamic attentional demands in a more naturalistic multitasking context. By manipulating attention levels through varying secondary tasks in the NASA MATB-II task while maintaining a consistent primary reaction-time task, this study successfully demonstrated the effectiveness of the paradigm. Results: Results indicate that both the beta/alpha ratio and EI are sensitive to changes in attentional demands, with beta/alpha being more responsive to dynamic variations in attention, and EI reflecting more the overall effort required to sustain performance, especially in conditions where maintaining attention is challenging. Conclusions: The potential for predicting the attention lapses through integration of performance metrics, EEG measures, and subjective assessments was demonstrated, providing a more nuanced understanding of dynamic fluctuations of attention in multitasking scenarios, mimicking those in real-world safety-critical tasks. These findings provide a foundation for advancing methods to monitor attention fluctuations accurately and mitigate risks in critical scenarios, such as train-driving or automated vehicle operation, where maintaining a high attention level is crucial.
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- 2024
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33. Attribute-Based Encryption Schemes for Next Generation Wireless IoT Networks: A Comprehensive Survey.
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Shruti, Rani S, Sah DK, and Gianini G
- Subjects
- Privacy, Cloud Computing, Delivery of Health Care, Computer Security, Internet of Things
- Abstract
Most data nowadays are stored in the cloud; therefore, cloud computing and its extension-fog computing-are the most in-demand services at the present time. Cloud and fog computing platforms are largely used by Internet of Things (IoT) applications where various mobile devices, end users, PCs, and smart objects are connected to each other via the internet. IoT applications are common in several application areas, such as healthcare, smart cities, industries, logistics, agriculture, and many more. Due to this, there is an increasing need for new security and privacy techniques, with attribute-based encryption (ABE) being the most effective among them. ABE provides fine-grained access control, enables secure storage of data on unreliable storage, and is flexible enough to be used in different systems. In this paper, we survey ABE schemes, their features, methodologies, benefits/drawbacks, attacks on ABE, and how ABE can be used with IoT and its applications. This survey reviews ABE models suitable for IoT platforms, taking into account the desired features and characteristics. We also discuss various performance indicators used for ABE and how they affect efficiency. Furthermore, some selected schemes are analyzed through simulation to compare their efficiency in terms of different performance indicators. As a result, we find that some schemes simultaneously perform well in one or two performance indicators, whereas none shines in all of them at once. The work will help researchers identify the characteristics of different ABE schemes quickly and recognize whether they are suitable for specific IoT applications. Future work that may be helpful for ABE is also discussed.
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- 2023
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34. Mathematical insights into the original Retinex algorithm for image enhancement.
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Lecca M, Gianini G, and Serapioni RP
- Subjects
- Humans, Image Processing, Computer-Assisted methods, Image Enhancement methods, Algorithms
- Abstract
The Retinex theory, originally developed by Land and McCann as a computation model of the human color sensation, has become, with time, a pillar of digital image enhancement. In this area, the Retinex algorithm is widely used to improve the quality of any input image by increasing the visibility of its content and details, enhancing its colorfulness, and weakening, or even removing, some undesired effects of the illumination. The algorithm was originally described by its creators in terms of a sequence of image processing operations and was not fully formalized mathematically. Later, works focusing on aspects of the original formulation and adopting some of its principles tried to frame the algorithm within a mathematical formalism: this yielded every time a partial rendering of the model and resulted in several interesting model variants. The purpose of the present work is to fill a gap in the Retinex-related literature by providing a complete mathematical formalization of the original Retinex algorithm. The overarching goals of this work are to provide mathematical insights into the Retinex theory, promote awareness of the use of the model within image enhancement, and enable better appreciation of differences and similarities with later models based on Retinex principles. For this purpose, we compare our model with others proposed in the literature, paying particular attention to the work published in 2005 by Provenzi and others.
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- 2022
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35. Robust Computationally-Efficient Wireless Emitter Classification Using Autoencoders and Convolutional Neural Networks.
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Almazrouei E, Gianini G, Almoosa N, and Damiani E
- Abstract
This paper proposes a novel Deep Learning (DL)-based approach for classifying the radio-access technology (RAT) of wireless emitters. The approach improves computational efficiency and accuracy under harsh channel conditions with respect to existing approaches. Intelligent spectrum monitoring is a crucial enabler for emerging wireless access environments that supports sharing of (and dynamic access to) spectral resources between multiple RATs and user classes. Emitter classification enables monitoring the varying patterns of spectral occupancy across RATs, which is instrumental in optimizing spectral utilization and interference management and supporting efficient enforcement of access regulations. Existing emitter classification approaches successfully leverage convolutional neural networks (CNNs) to recognize RAT visual features in spectrograms and other time-frequency representations; however, the corresponding classification accuracy degrades severely under harsh propagation conditions, and the computational cost of CNNs may limit their adoption in resource-constrained network edge scenarios. In this work, we propose a novel emitter classification solution consisting of a Denoising Autoencoder (DAE), which feeds a CNN classifier with lower dimensionality, denoised representations of channel-corrupted spectrograms. We demonstrate-using a standard-compliant simulation of various RATs including LTE and four latest Wi-Fi standards-that in harsh channel conditions including non-line-of-sight, large scale fading, and mobility-induced Doppler shifts, our proposed solution outperforms a wide range of standalone CNNs and other machine learning models while requiring significantly less computational resources. The maximum achieved accuracy of the emitter classifier is 100%, and the average accuracy is 91% across all the propagation conditions.
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- 2021
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36. A population-based approach to point-sampling spatial color algorithms.
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Gianini G, Lecca M, and Rizzi A
- Abstract
Inspired by the behavior of the human visual system, spatial color algorithms perform image enhancement by correcting the pixel channel lightness based on the spatial distribution of the intensities in the surrounding area. The two visual contrast enhancement algorithms RSR and STRESS belong to this family of models: they rescale the input based on local reference values, which are determined by exploring the image by means of random point samples, called sprays. Due to the use of sampling, they may yield a noisy output. In this paper, we introduce a probabilistic formulation of the two models: our algorithms (RSR-P and STRESS-P) rely implicitly on the whole population of possible sprays. For processing larger images, we also provide two approximated algorithms that exploit a suitable target-dependent space quantization. Those spray population-based formulations outperform RSR and STRESS in terms of the processing time required for the production of noiseless outputs. We argue that this population-based approach, which can be extended to other members of the family, complements the sampling-based approach, in that it offers not only a better control in the design of approximated algorithms, but also additional insight into individual models and their relationships. We illustrate the latter point by providing a model of halo artifact formation.
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- 2016
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37. Energy-driven path search for Termite Retinex.
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Lecca M, Rizzi A, and Gianini G
- Abstract
The human color sensation depends on the local and global spatial arrangements of the colors in the scene. Emulating this dependence requires the exploration of the image in search of a white reference. The algorithm Termite Retinex explores the image by a set of paths resembling traces of a swarm of termites. Starting from this approach, we develop a novel spatial exploration scheme where the termite paths are local minimums of an energy function, which depend on the image visual content. The energy is designed to favor the visitation of regions containing information relevant to the color sensation while minimizing the coverage of less essential regions. This exploration method contributes to the investigation of the spatial properties of the color sensation and, to the best of our knowledge, is the first model relying on mathematical global conditions for the Retinex paths. The experiments show that the estimation of the color sensation obtained by means of the proposed spatial sampling is a valid alternative to the one based on Termite Retinex.
- Published
- 2016
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38. QBRIX: a quantile-based approach to retinex.
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Gianini G, Manenti A, and Rizzi A
- Abstract
In this paper, we introduce a novel probabilistic version of retinex. It is based on a probabilistic formalization of the random spray retinex sampling and contributes to the investigation of the spatial properties of the model. Various versions available of the retinex algorithm are characterized by different procedures for exploring the image content (so as to obtain, for each pixel, a reference white value), then used to rescale the pixel lightness. Here we propose an alternative procedure, which computes the reference white value from the percentile values of the pixel population. We formalize two versions of the algorithm: one with global and one with local behavior, characterized by different computational costs.
- Published
- 2014
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39. Epignathus: two cases.
- Author
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Freitas Rda S, Alonso N, Azzolini Tde F, Gianini-Romano G, Tolazzi AR, Busato L, and Grande CV
- Subjects
- Cleft Palate complications, Female, Humans, Infant, Newborn, Male, Nasopharyngeal Neoplasms complications, Nasopharyngeal Neoplasms surgery, Sphenoid Sinus pathology, Sphenoid Sinus surgery, Teratoma complications, Teratoma surgery, Nasopharyngeal Neoplasms pathology, Teratoma pathology
- Abstract
Epignathus is a rare congenital nasopharyngeal tumour that is derived from the upper jaw, palate, and sphenoid bone. It usually protrudes through the mouth, leading to an appreciable risk of obstruction of the upper airway and death soon after birth. We report two cases of unusual presentations that illustrated some uncommon and similar characteristics. Although these tumours are not consistent in origin, number, and differentiation of tissues, both contained structures that were derived from all three layers of germ cells, including different anomalous tissues internally (dental bud, fat and muscular tissues, mucosal epithelium). Externally, they contained normal epidermis (skin with fine hairs). Imaging studies and operative findings showed that both tumours originated from the anterior portion of the sphenoid bone causing a sphenoidal sinus cleft without intracranial communication.
- Published
- 2008
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40. Measurement of the D(s)+ lifetime.
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Link JM, Yager PM, Anjos JC, Bediaga I, Castromonte C, Machado AA, Magnin J, Massafferi A, de Miranda JM, Pepe IM, Polycarpo E, dos Reis AC, Carrillo S, Casimiro E, Cuautle E, Sánchez-Hernández A, Uribe C, Vázquez F, Agostino L, Cinquini L, Cumalat JP, O'Reilly B, Segoni I, Stenson K, Butler JN, Cheung HW, Chiodini G, Gaines I, Garbincius PH, Garren LA, Gottschalk E, Kasper PH, Kreymer AE, Kutschke R, Wang M, Benussi L, Bertani M, Bianco S, Fabbri FL, Pacetti S, Zallo A, Reyes M, Cawlfield C, Kim DY, Rahimi A, Wiss J, Gardner R, Kryemadhi A, Chung YS, Kang JS, Ko BR, Kwak JW, Lee KB, Cho K, Park H, Alimonti G, Barberis S, Boschini M, Cerutti A, D'Angelo P, DiCorato M, Dini P, Edera L, Erba S, Inzani P, Leveraro F, Malvezzi S, Menasce D, Mezzadri M, Milazzo L, Moroni L, Pedrini D, Pontoglio C, Prelz F, Rovere M, Sala S, Davenport TF 3rd, Arena V, Boca G, Bonomi G, Gianini G, Liguori G, Pegna DL, Merlo MM, Pantea D, Ratti SP, Riccardi C, Vitulo P, Göbel C, Hernandez H, Lopez AM, Mendez H, Paris A, Quinones J, Ramirez JE, Zhang Y, Wilson JR, Handler T, Mitchell R, Engh D, Hosack M, Johns WE, Luiggi E, Moore JE, Nehring M, Sheldon PD, Vaandering EW, Webster M, and Sheaff M
- 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.
- Published
- 2005
- Full Text
- View/download PDF
41. A high statistics measurement of the Lambda(+)(c) lifetime.
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Link JM, Reyes M, Yager PM, Anjos JC, Bediaga I, Göbel C, Magnin J, Massafferi A, de Miranda JM, Pepe IM, dos Reis AC, Carrillo S, Casimiro E, Cuautle E, Sánchez-Hernández A, Uribe C, Vazquez F, Agostino L, Cinquini L, Cumalat JP, O'Reilly B, Ramirez JE, Segoni I, Butler JN, Cheung HW, Gaines I, Garbincius PH, Garren LA, Gottschalk E, Kasper PH, Kreymer AE, Kutschke R, Bianco S, Fabbri FL, Zallo A, Cawlfield C, Kim DY, Rahimi A, Wiss J, Gardner R, Kryemadhi A, Chung YS, Kang JS, Ko BR, Kwak JW, Lee KB, Park H, Alimonti G, Boschini M, D'Angelo P, DiCorato M, Dini P, Giammarchi M, Inzani P, Leveraro F, Malvezzi S, Menasce D, Mezzadri M, Milazzo L, Moroni L, Pedrini D, Pontoglio C, Prelz F, Rovere M, Sala S, Davenport TF 3rd, Arena V, Boca G, Bonomi G, Gianini G, Liguori G, Merlo MM, Pantea D, Ratti SP, Riccardi C, Vitulo P, Hernandez H, Lopez AM, Luiggi E, Mendez H, Mendez L, Mirles A, Montiel E, Olaya D, Paris A, Quinones J, Rivera C, Xiong W, Zhang Y, Wilson JR, Cho K, Handler T, Mitchell R, Engh D, Hosack M, Johns WE, Nehring M, Sheldon PD, Stenson K, Vaandering EW, Webster M, and Sheaff M
- Abstract
A high statistics measurement of the Lambda(+)(c) lifetime from the Fermilab fixed-target FOCUS photoproduction experiment is presented. We describe the analysis technique with particular attention to the determination of the systematic uncertainty. The measured value of 204.6 +/- 3.4 (stat) +/- 2.5 (syst) fs from 8034 +/- 122 Lambda(+)(c)-->pK(-)pi(+) decays represents a significant improvement over the present world average.
- Published
- 2002
- Full Text
- View/download PDF
42. Search for CP violation in the decays D+--> K(S)pi+ and D+-->K(S)K+.
- Author
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Link JM, Reyes M, Yager PM, Anjos JC, Bediaga I, Göbel C, Magnin J, Massafferri A, de Miranda JM, Pepe IM, dos Reis AC, Carrillo S, Casimiro E, Sánchez-Hernández A, Uribe C, Vázquez F, Cinquini L, Cumalat JP, O'Reilly B, Ramirez JE, Vaandering EW, Butler JN, Cheung HW, Gaines I, Garbincius PH, Garren LA, Gottschalk E, Kasper PH, Kreymer AE, Kutschke R, Bianco S, Fabbri FL, Zallo A, Cawlfield C, Kim DY, Rahimi A, Wiss J, Gardner R, Kryemadhi A, Chung YS, Kang JS, Ko BR, Kwak JW, Lee KB, Park H, Alimonti G, Boschini M, D'Angelo P, DiCorato M, Dini P, Giammarchi M, Inzani P, Leveraro F, Malvezzi S, Menasce D, Mezzadri M, Milazzo L, Moroni L, Pedrini D, Pontoglio C, Prelz F, Rovere M, Sala S, Davenport TF 3rd, Agostino L, Arena V, Boca G, Bonomi G, Gianini G, Liguori G, Merlo MM, Pantea D, Ratti SP, Riccardi C, Segoni I, Vitulo P, Hernandez H, Lopez AM, Mendez H, Mendez L, Mirles A, Montiel E, Olaya D, Paris A, Quinones J, Rivera C, Xiong W, Zhang Y, Wilson JR, Cho K, Handler T, Mitchell R, Engh D, Hosack M, Johns WE, Nehring M, Sheldon PD, Stenson K, Webster M, and Sheaff M
- Abstract
A high-statistics sample of photoproduced charm from the FOCUS experiment has been used to search for direct CP violation in the decay rates for D+-->K(S)pi+ and D+-->K(S)K+. We have measured the following asymmetry parameters relative to D+-->K-pi+pi+: A(CP)(K(S)pi+) = (-1.6+/-1.5+/-0.9)%, A(CP)(K(S)K+) = (+6.9+/-6.0+/-1.5)%, and A(CP)(K(S)K+) = (+7.1+/-6.1+/-1.2)% relative to D+-->K(S)pi+. We have also measured the relative branching ratios and found Gamma(D+-->K(0)pi+)/Gamma(D+-->K-pi+pi+) = (30.60+/-0.46+/-0.32)%, Gamma(D+-->K(0)K+)/Gamma(D+-->K-pi+pi+) = (6.04+/-0.35+/-0.30)%, and Gamma(D+-->K(0)K+)/Gamma(D+-->K(0)pi+) = (19.96+/-1.19+/-0.96)%.
- Published
- 2002
- Full Text
- View/download PDF
43. Measurement of the branching ratios of D(+) and D(+)(s) hadronic decays to four-body final states containing a K(S).
- Author
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Link JM, Reyes M, Yager PM, Anjos JC, Bediaga I, Göbel C, Magnin J, Massafferi A, de Miranda JM, Pepe IM, dos Reis AC, Simão FR, Carrillo S, Casimiro E, Sánchez-Hernández A, Uribe C, Vázquez F, Cinquini L, Cumalat JP, O'Reilly B, Ramirez JE, Vaandering EW, Butler JN, Cheung HW, Gaines I, Garbincius PH, Garren LA, Gottschalk E, Kasper PH, Kreymer AE, Kutschke R, Bianco S, Fabbri FL, Sarwar S, Zallo A, Cawlfield C, Kim DY, Rahimi A, Wiss J, Gardner R, Chung YS, Kang JS, Ko BR, Kwak JW, Lee KB, Park H, Alimonti G, Boschini M, Caccianiga B, D'Angelo P, DiCorato M, Dini P, Giammarchi M, Inzani P, Leveraro F, Malvezzi S, Menasce D, Mezzadri M, Milazzo L, Moroni L, Pedrini D, Pontoglio C, Prelz F, Rovere M, Sala A, Sala S, Davenport TF 3rd, Agostino L, Arena V, Boca G, Bonomi G, Gianini G, Liguori G, Merlo M, Pantea D, Ratti SP, Riccardi C, Segoni I, Viola L, Vitulo P, Hernandez H, Lopez AM, Mendez H, Mendez L, Mirles A, Montiel E, Olaya D, Paris A, Quinones J, Rivera C, Xiong W, Zhang Y, Wilson JR, Cho K, Handler T, Engh D, Hosack M, Johns WE, Nehring M, Sheldon PD, Stenson K, Webster M, and Sheaff M
- Abstract
We have studied hadronic four-body decays of D(+) and D(+)(s) mesons with a K(S) in the final state using data recorded during the 1996-1997 fixed-target run of the Fermilab high energy photoproduction experiment FOCUS. We report a new branching ratio measurement of gamma(D(+)-->K(S)K-pi(+)pi(+))/gamma(D(+)-->K(S)pi(+)pi(+)pi(-)) = 0.0768+/-0.0041+/-0.0032. We make the first observation of three new decay modes with branching ratios gamma(D(+)-->K(S)K+pi(+)pi(-))/gamma(D(+)-->K(S)pi(+)pi(+)pi(-)) = 0.0562+/-0.0039+/-0.0040, gamma(D(+)-->K(S)K+K-pi(+))/gamma(D(+)-->K(S)pi(+)pi(+)pi(-)) = 0.0077+/-0.0015+/-0.0009, and gamma(D(+)(s)-->K(S)K+pi(+)pi(-))/gamma(D(+)(s)-->K(S)K-pi(+)pi(+)) = 0.586+/-0.052+/-0.043, where in each case the first error is statistical and the second error is systematic.
- Published
- 2001
- Full Text
- View/download PDF
44. Study of the decay D0 --> K+pi-.
- Author
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Link JM, Reyes M, Yager PM, Anjos JC, Bediaga I, Göbel C, Magnin J, Massafferi A, de Miranda JM, Pepe IM, dos Reis AC, Simão FR, Carrillo S, Casimiro E, Sánchez-Hernández A, Uribe C, Vazquez F, Cinquini L, Cumalat JP, O'Reilly B, Ramirez JE, Vaandering EW, Butler JN, Cheung HW, Gaines I, Garbincius PH, Garren LA, Gottschalk E, Kasper PH, Kreymer AE, Kutschke R, Bianco S, Fabbri FL, Sarwar S, Zallo A, Cawlfield C, Kim DY, Rahimi A, Wiss J, Gardner R, Chung YS, Kang JS, Ko BR, Kwak JW, Lee KB, Park H, Alimonti G, Boschini M, Caccianiga B, D'Angelo P, DiCorato M, Dini P, Giammarchi M, Inzani P, Leveraro F, Malvezzi S, Menasce D, Mezzadri M, Milazzo L, Moroni L, Pedrini D, Pontoglio C, Prelz F, Rovere M, Sala A, Sala S, Davenport TF 3rd, Agostino L, Arena V, Boca G, Bonomi G, Gianini G, Liguori G, Merlo M, Pantea D, Ratti SP, Riccardi C, Segoni I, Viola L, Vitulo P, Hernandez H, Lopez AM, Mendez H, Mendez L, Mirles A, Montiel E, Olaya D, Paris A, Quinones J, Rivera C, Xiong W, Zhang Y, Wilson JR, Cho K, Handler T, Engh D, Hosack M, Johns WE, Nehring MS, Sheldon PD, Stenson K, Webster MS, and Sheaff M
- Abstract
Using a large sample of photoproduced charm mesons from the FOCUS experiment at Fermilab (FNAL-E831), we observe the decay D0-->K+pi- with a signal yield of 149+/-31 events compared to a similarly cut sample consisting of 36 760+/-195 D0-->K-pi+ events. We use the observed ratio of D0-->K+pi- to D0-->K-pi+ (0.404+/-0.085+/-0.025)% to obtain a relationship between the D0 mixing and doubly Cabibbo suppressed decay parameters.
- Published
- 2001
- Full Text
- View/download PDF
45. Search for CP violation in charm meson decay.
- Author
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Frabetti PL, Cheung HW, Cumalat JP, Dallapiccola C, Ginkel JF, Greene SV, Johns WE, Nehring MS, Butler JN, Cihangir S, Gaines I I, Garbincius PH, Garren L, Gourlay SA, Harding DJ, Kasper P, Kreymer A, Lebrun P, Shukla S, Vittone M, Bianco S, Fabbri FL, Sarwar S, Zallo A, Culbertson R, Gardner RW, Greene R, Wiss J, Alimonti G, Bellini G, Caccianiga B, Cinquini L, Corato MD, Giammarchi M, Inzani P, Leveraro F, Malvezzi S, Menasce D, Meroni E, Moroni L, Pedrini D, Perasso L, Sala A, Sala S, Torretta D, Buchholz D, Claes D, Gobbi B, O'Reilly B, Bishop JM, Cason NM, Kennedy CJ, Kim GN, Lin TF, Puseljic DL, Ruchti RC, Shephard WD, Swiatek JA, Wu ZY, Arena V V, Boca G, Castoldi C, Gianini G, and Ratti SP
- Published
- 1994
- Full Text
- View/download PDF
46. Observation of an excited state of the Lambda c+ baryon.
- Author
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Frabetti PL, Cheung HW, Cumalat JP, Dallapiccola C, Ginkel JF, Greene SV, Johns WE, Nehring MS, Butler JN, Cihangir S, Gaines I I, Garbincius PH, Garren L, Gourlay SA, Harding DJ, Kasper P, Kreymer A, Lebrun P, Shukla S, Bianco S, Fabbri FL, Sarwar S, Zallo A, Culbertson R, Gardner RW, Greene R, Wiss J, Alimonti G, Bellini G, Caccianiga B, Cinquini L, Di Corato M, Giammarchi M, Inzani P, Leveraro F, Malvezzi S, Menasce D, Meroni E, Moroni L, Pedrini D, Perasso L, Sala A, Sala S, Torretta D, Vittone M, Buchholz D, Claes D, Gobbi B, O'Reilly B, Bishop JM, Cason NM, Kennedy CJ, Kim GN, Lin TF, Puseljic DL, Ruchti RC, Shephard WD, Swiatek JA, Wu ZY, Arena V V, Boca G, Castoldi C, Gianini G, and Ratti SP
- Published
- 1994
- Full Text
- View/download PDF
47. Measurment of the masses and widths of L=1 charmed mesons.
- Author
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Frabetti PL, Cheung HW, Cumalat JP, Dallapiccola C, Ginkel JF, Greene SV, Johns WE, Nehring MS, Butler JN, Cihangir S, Gaines I I, Garbincius PH, Garren L, Gourlay SA, Harding DJ, Kasper P, Kreymer A, Lebrun P, Shukla S, Vittone M, Bianco S, Fabbri FL, Sarwar S, Zallo A, Culbertson R, Gardner RW, Greene R, Wiss J, Alimonti G, Bellini G, Caccianiga B, Cinquini L, Di Corato M, Giammarchi M, Inzani P, Leveraro F, Malvezzi S, Menasce D, Meroni E, Moroni L, Pedrini D, Perasso L, Sala A, Sala S, Torretta D, Buchholz D, Claes D, Gobbi B, O'Reilly B, Bishop JM, Cason NM, Kennedy CJ, Kim GN, Lin TF, Puseljic DL, Ruchti RC, Shephard WD, Swiatek JA, Wu ZY, Arena V V, Boca G, Castoldi C, Gianini G, and Ratti SP
- Published
- 1994
- Full Text
- View/download PDF
48. Precise measurement of the Ds+/- meson lifetime.
- Author
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Frabetti PL, Cheung HW, Cumalat JP, Dallapiccola C, Ginkel JF, Greene SV, Johns WE, Nehring MS, Butler JN, Cihangir S, Gaines I I, Garbincius PH, Garren L, Gourlay SA, Harding DJ, Kasper P, Kreymer A, Lebrun P, Shukla S, Bianco S, Fabbri FL, Sarwar S, Zallo A, Culbertson R, Gardner RW, Greene R, Wiss J, Alimonti G, Bellini G, Caccianiga B, Cinquini L, Di Corato M, Giammarchi M, Inzani P, Leveraro F, Malvezzi S, Menasce D, Meroni E, Moroni L, Pedrini D, Perasso L, Sala A, Sala S, Torretta D, Vittone M, Buchholz D, Claes D, Gobbi B, O'Reilly B, Bishop JM, Cason NM, Kennedy CJ, Kim GN, Lin TF, Puseljic DL, Ruchti RC, Shephard WD, Swiatek JA, Wu ZY, Arena V V, Boca G, Castoldi C, Diaferia R, and Gianini G
- Published
- 1993
- Full Text
- View/download PDF
49. Measurement of the lifetime of the Xi c0.
- Author
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Frabetti PL, Cheung HW, Cumalat JP, Dallapiccola C, Ginkel JF, Greene SV, Johns WE, Nehring MS, Butler JN, Cihangir S, Gaines I I, Garren L, Garbincius PH, Gourlay SA, Harding DJ, Kasper P, Kreymer A, Lebrun P, Shukla S, Bianco S, Fabbri FL, Sarwar S, Zallo A, Culbertson R, Gardner RW, Greene R, Wiss J, Alimonti G, Bellini G, Caccianiga B, Cinquini L, Di Corato M, Giammarchi M, Inzani P, Leveraro F, Malvezzi S, Menasce D, Meroni E, Moroni L, Pedrini D, Perasso L, Sala A, Sala S, Torreta D, Vittone M, Buchholz D, Claes D, Gobbi B, O'Reilly B, Bishop JM, Cason NM, Kennedy CJ, Kim GN, Lin TF, Puseljic DL, Ruchti RC, Shepard WD, Swiatek JA, Wu ZY, Arena V V, Boca G, Castoldi C, Diaferia R, and Gianini G
- Published
- 1993
- Full Text
- View/download PDF
50. Measurement of the mass and lifetime of the Xi c+
- Author
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Frabetti PL, Cheung HW, Cumalat JP, Dallapiccola C, Ginkel JF, Greene SV, Johns WE, Nehring MS, Butler JN, Cihangir S, Gaines I I, Garren L, Garbincius PH, Gourlay SA, Harding DJ, Kasper P, Kreymer A, Lebrun P, Shukla S, Bianco S, Fabbri FL, Sarwar S, Zallo A, Culbertson R, Gardner RW, Greene R, Wiss J, Alimonti G, Bellini G, Caccianiga B, Cinquini L, Di Corato M, Giammarchi M, Inzani P, Leveraro F, Malvezzi S, Menasce D, Meroni E, Moroni L, Pedrini D, Perasso L, Sala A, Sala S, Torretta D, Vittone M, Buchholz D, Claes D, Gobbi B, O'Reilly B, Bishop JM, Cason NM, Kennedy CJ, Kim GN, Lin TF, Puseljic DL, Ruchti RC, Shephard WD, Swiatek JA, Wu ZY, Arena V V, Boca G, Castoldi C, Diaferia R, and Gianini G
- Published
- 1993
- Full Text
- View/download PDF
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