Giles Barr: Publications

Measurement of the quadratic slope parameter in the KL → 3π⁰ decay Dalitz plot

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 515:3-4 (2001) 261-268

Authors:

A Lai, D Marras, L Musa, A Bevan, RS Dosanjh, TJ Gershon, B Hay, GE Kalmus, DJ Munday, MD Needham, E Olaiya, MA Parker, TO White, SA Wotton, G Barr, H Blümer, G Bocquet, A Ceccucci, D Cundy, G D'Agostini, N Doble, V Falaleev, L Gatignon, A Gonidec, G Govi, P Grafström, W Kubischta, A Lacourt, M Lenti, S Luitz, JP Matheys, A Norton, S Palestini, B Panzer-Steindel, G Tatishvili, H Taureg, M Velasco, H Wahl, C Cheshkov, P Hristov, V Kekelidze, D Madigojine, N Molokanova, Y Potrebenikov, A Zinchenko, I Knowles, C Lazzeroni, V Martin, H Parsons, R Sacco, A Walker, M Contalbrigo, P Dalpiaz, J Duclos, PL Frabetti, A Gianoli, M Martini, F Petrucci, M Savrié, A Bizzeti, M Calvetti, G Collazuol, G Graziani, E Iacopini, HG Becker, M Eppard, H Fox, K Holtz, A Kalter, K Kleinknecht, U Koch, L Köpke, I Pellmann, A Peters, B Renk, SA Schmidt, V Schönharting, Y Schué, R Wanke, A Winhart, M Wittgen, JC Chollet, S Crépé, L Fayard, L Iconomidou-Fayard, J Ocariz, G Unal, I Wingerter, G Anzivino, P Cenci, E Imbergamo, P Lubrano, A Mestvirishvili, A Nappi, M Pepe, M Piccini, R Carosi, R Casali, C Cerri, M Cirilli

Abstract:

A value of (-6.1 ± 0.9stat ± 0.5syst) × 10-3 is obtained for the quadratic slope parameter h in the KL → 3π0 decay Dalitz plot at the NA48 experiment at the CERN SPS. The result is based on 14.7 × 106 fully reconstructed KL → 3π0 → 6γ decays. This is the most precise measurement of any of the Dalitz plot slope parameters in the charged and neutral kaon decays so far. © 2001 Elsevier Science B.V.

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Measurement of the Λc⁺ lifetime

Physical Review Letters 86:11 (2001) 2232-2236

Authors:

AH Mahmood, SE Csorna, I Danko, KW McLean, S Márka, Z Xu, R Godang, K Kinoshita, IC Lai, S Schrenk, G Bonvicini, D Cinabro, S McGee, LP Perera, GJ Zhou, E Lipeles, SP Pappas, M Schmidtler, A Shapiro, WM Sun, AJ Weinstein, F Würthwein, DE Jaffe, G Masek, HP Paar, EM Potter, S Prell, V Sharma, DM Asner, A Eppich, TS Hill, RJ Morrison, HN Nelson, RA Briere, GP Chen, BH Behrens, WT Ford, A Gritsan, J Roy, JG Smith, JP Alexander, R Baker, C Bebek, BE Berger, K Berkelman, F Blanc, V Boisvert, DG Cassel, M Dickson, PS Drell, KM Ecklund, R Ehrlich, AD Foland, P Gaidarev, RS Galik, L Gibbons, B Gittelman, SW Gray, DL Hartill, BK Heltsley, PI Hopman, CD Jones, J Kandaswamy, DL Kreinick, M Lohner, A Magerkurth, TO Meyer, NB Mistry, E Nordberg, JR Patterson, D Peterson, D Riley, JG Thayer, D Urner, B Valant-Spaight, A Warburton, P Avery, C Prescott, AI Rubiera, J Yelton, J Zheng, G Brandenburg, A Ershov, YS Gao, DYJ Kim, R Wilson, TE Browder, Y Li, JL Rodriguez, H Yamamoto, T Bergfeld, BI Eisenstein, J Ernst, GE Gladding, GD Gollin, RM Hans, E Johnson, I Karliner, MA Marsh, M Palmer

Abstract:

The lifetime of the lowest-mass charm bryon is measured to provide a window for the nonperturbative sector of heavy quark decay. The data are obtained in a colliding beam environment in the CLEO II.V detector at the Cornell Electron Storage Ring. In this environment, the event topologies and backgrounds are very different from those encountered in high energy fixed-target experiments.

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A precise measurement of the direct CP violation parameter Re(ε′/ε)

European Physical Journal C 22:2 (2001) 231-254

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Abstract:

The direct CP violation parameter Re(ε′/ε) has been measured from the decay rates of neutral kaons into two pions using the NA48 detector at the CERN SPS. With 3.3 million KL → π0π0 events collected during the 1998 and 1999 running periods, a result of Re(ε′/ε) = (15.0 ± 2.7) × 10-4 has been obtained. The result combined with the published 1997 sample is Re(ε′/ε) = (15.3 ± 2.6) × 10-4.

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A precise measurement of the direct CP violation parameter Re(ε′/ε)

EUROPEAN PHYSICAL JOURNAL C 22:2 (2001) 231-254

Authors:

A Lai, D Marras, A Bevan, RS Dosanjh, TJ Gershon, B Hay, GE Kalmus, C Lazzeroni, DJ Munday, MD Needham, E Olaiya, MA Parker, TO White, SA Wotton, G Barr, G Bocquet, A Ceccucci, T Cuhadar-Dönszelmann, D Cundy, G D'Agostini, N Doble, V Falaleev, W Funk, L Gatignon, A Gonidec, B Gorini, G Govi, P Grafström, W Kubischta, A Lacourt, M Lenti, S Luitz, JP Matheys, I Mikulec, A Norton, S Palestini, B Panzer-Steindel, D Schinzel, G Tatishvili, H Taureg, M Velasco, O Vossnack, H Wahl, C Cheshkov, A Gaponenko, P Hristov, V Kekelidze, D Madigojine, N Molokanova, Y Potrebenikov, A Tkatchev, A Zinchenko, I Knowles, V Martin, H Parsons, R Sacco, A Walker, M Contalbrigo, P Dalpiaz, J Duclos, PL Frabetti, A Gianoli, M Martini, F Petrucci, M Savrié, M Scarpa, A Bizzeti, M Calvetti, G Collazuol, G Graziani, E Iacopini, F Martelli, M Veltri, HG Becker, H Blümer, D Coward, M Eppard, H Fox, A Hirstius, K Holtz, A Kalter, K Kleinknecht, U Koch, L Köpke, PL da Silva, P Marouelli, I Pellmann, A Peters, SA Schmidt, V Schönharting, Y Schué, R Wanke, A Winhart, M Wittgen, JC Chollet, S Crépé, L Fayard, L Iconomidou-Fayard, J Ocariz, G Unal, I Wingerter-Seez, G Anzivino, P Cenci, E Imbergamo, P Lubrano, A Mestvirishvili, A Nappi, M Pepe, M Piccini, L Bertanza, P Calafiura, R Carosi, R Casali, C Cerri, M Cirilli, F Costantini, R Fantechi, S Giudici, I Mannelli, V Marzulli, G Pierazzini, M Sozzi, JB Cheze, J Cogan, M De Beer, P Debu, F Derue, A Formica, RG de Cassagnac, E Mazzucato, B Peyaud, R Turlay, B Vallage, I Augustin, M Bender, M Holder, A Maier, M Ziolkowski, R Arcidiacono, C Biino, N Cartiglia, R Guida, F Marchetto, E Menichetti, N Pastrone, J Nassalski, E Rondio, M Szlepor, W Wislicki, S Wronka, H Dibon, G Fischer, M Jeitler, M Markytan, G Neuhofer, M Pernicka, A Taurok, L Widhalm

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Search for the decay K_s → π⁰e⁺e^-

PHYSICS LETTERS B 514:3-4 (2001) 253-262

Authors:

A Lai, D Marras, R Batley, A Bevan, RS Dosanjh, TJ Gershon, GE Kalmus, B Hay, DJ Munday, E Olaiya, MA Parker, TO White, SA Wotton, G Barr, G Bocquet, A Ceccucci, T Cuhadar-Donszelmann, D Cundy, N Doble, V Falaleev, L Gatignon, A Gonidec, B Gorini, G Govi, P Grafström, W Kubischta, A Lacourt, M Lenti, A Norton, S Palestini, B Panzer-Steindel, G Tatishvili, H Taureg, M Velasco, H Wahl, C Cheshkov, A Gaponenko, P Hristov, V Kekelidze, D Madigojine, N Molokanova, Y Potrebenikov, A Tkatchev, A Zinchenko, L Knowles, C Lazzeroni, V Martin, R Sacco, A Walker, M Contalbrigo, P Dalpiaz, J Duclos, PL Frabetti, A Gianoli, M Martini, F Petrucci, M Savrié, A Bizzeti, M Calvetti, G Collazuol, G Graziani, E Iacopini, HG Becker, M Eppard, H Fox, K Holtz, A Kalter, K Kleinknecht, U Koch, L Köpke, PL da Silva, P Marouelli, I Pellmann, A Peters, B Renk, SA Schmidt, V Schönharting, Y Schué, R Wanke, A Winhart, M Wittgen, JC Chollet, L Fayard, L Iconomidou-Fayard, J Ocariz, G Unal, I Wingerter-Seez, G Anzivino, P Cenci, E Imbergamo, P Lubrano, A Mestvirishvili, A Nappi, M Pepe, M Piccini, R Carosi, R Casali, C Cerri, M Cirilli, F Costantini, R Fantechi, S Giudici, I Mannelli, G Pierazzini, M Sozzi, JB Cheze, J Cogan, M De Beer, P Debu, A Formica, RG de Cassagnac, E Mazzucato, B Peyaud, R Turlay, B Vallage, M Holder, A Maier, M Ziolkowski, R Arcidiacono, C Biino, N Cartiglia, R Guida, F Marchetto, E Menichetti, N Pastrone, J Nassalski, E Rondio, M Szleper, W Wislicki, S Wronka, H Dibon, G Fischer, M Jeitler, M Markytan, I Mikulec, G Neuhofer, M Pernicka, A Taurok, L Widhalm

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Measurement of the quadratic slope parameter in the KL → 3π⁰ decay Dalitz plot

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Measurement of the Λc⁺ lifetime

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A precise measurement of the direct CP violation parameter Re(ε′/ε)

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A precise measurement of the direct CP violation parameter Re(ε′/ε)

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Search for the decay K_s → π⁰e⁺e^-

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Measurement of the quadratic slope parameter in the KL → 3π0 decay Dalitz plot

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Measurement of the Λc+ lifetime

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A precise measurement of the direct CP violation parameter Re(ε′/ε)

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A precise measurement of the direct CP violation parameter Re(ε′/ε)

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Search for the decay Ks → π0e+e-

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Measurement of the quadratic slope parameter in the KL → 3π⁰ decay Dalitz plot

Measurement of the Λc⁺ lifetime

Search for the decay K_s → π⁰e⁺e^-