Malcolm John: Publications

Study of B± → J/Ψπ± and B± → J/ΨK± decays: Measurement of the ratio of branching fractions and search for direct CP violation

Physical Review Letters 92:24 (2004)

Authors:

B Aubert, R Barate, D Boutigny, F Couderc, JM Gaillard, A Hicheur, Y Karyotakis, JP Lees, V Tisserand, A Zghiche, A Palano, A Pompili, JC Chen, ND Qi, G Rong, P Wang, YS Zhu, G Eigen, I Ofte, B Stugu, GS Abrams, A Borgland, AB Breon, DN Brown, J Button-Shafer, RN Cahn, E Charles, CT Day, MS Gill, AV Gritsan, Y Groysman, RG Jacobsen, RW Kadel, J Kadyk, LT Kerth, YG Kolomensky, G Kukartsev, C LeClerc, ME Levi, G Lynch, LM Mir, PJ Oddone, TJ Orimoto, M Pripstein, NA Roe, MT Ronan, VG Shelkov, AV Telnov, WA Wenzel, K Ford, TJ Harrison, CM Hawkes, SE Morgan, AT Watson, NK Watson, M Fritsch, K Goetzen, T Held, H Koch, B Lewandowski, M Pelizaeus, M Steinke, JT Boyd, N Chevalier, WN Cottingham, MP Kelly, TE Latham, FF Wilson, K Abe, T Cuhadar-Donszelmann, C Hearty, TS Mattison, JA McKenna, D Thiessen, P Kyberd, L Teodorescu, VE Blinov, AD Bukin, VP Druzhinin, VB Golubev, VN Ivanchenko, EA Kravchenko, AP Onuchin, SI Serednyakov, YI Skovpen, EP Solodov, AN Yushkov, D Best, M Bruinsma, M Chao, I Eschrich, D Kirkby, AJ Lankford, M Mandelkern, RK Mommsen, W Roethel, DP Stoker, C Buchanan, BL Hartfiel, JW Gary

Abstract:

Decays that measure the ratio of branching fractions and searches for direct CP violations were analyzed. The decays were collected with the BABAR detector at the PEP-II asymmetric B factory at SLAC. The fitted asymmetries for the small observed differences in the tracking efficiency were corrected between positively and negatively charged track. It was found that the uncertainty in the fixed parameters of the PDFs, determined by fits to stimulated or nonsignal data sets, contributed 0.001 to the systematic errors.

More details from the publisher

More details

Measurement of the branching fractions and CP asymmetry of B^- → D(CP)⁰CPK^- decays with the BABAR detector

Physical Review Letters 92:20 (2004)

Authors:

B Aubert, R Barate, D Boutigny, JM Gaillard, A Hicheur, Y Karyotakis, JP Lees, P Robbe, V Tisserand, A Zghiche, A Palano, A Pompili, JC Chen, ND Qi, G Rong, P Wang, YS Zhu, G Eigen, I Ofte, B Stugu, GS Abrams, A Borgland, AB Breon, DN Brown, J Button-Shafer, RN Cahn, E Charles, CT Day, MS Gill, AV Gritsan, Y Groysman, RG Jacobsen, RW Kadel, J Kadyk, LT Kerth, YG Kolomensky, G Kukartsev, C LeClerc, ME Levi, G Lynch, LM Mir, PJ Oddone, TJ Orimoto, M Pripstein, NA Roe, A Romosan, MT Ronan, VG Shelkov, AV Telnov, WA Wenzel, K Ford, TJ Harrison, CM Hawkes, DJ Knowles, SE Morgan, RC Penny, AT Watson, NK Watson, K Goetzen, H Koch, B Lewandowski, M Pelizaeus, K Peters, H Schmuecker, M Steinke, JT Boyd, N Chevalier, WN Cottingham, MP Kelly, TE Latham, C Mackay, FF Wilson, K Abe, T Cuhadar-Donszelmann, C Hearty, TS Mattison, JA McKenna, D Thiessen, P Kyberd, AK McKemey, L Teodorescu, VE Blinov, AD Bukin, VB Golubev, VN Ivanchenko, EA Kravchenko, AP Onuchin, SI Serednyakov, YI Skovpen, EP Solodov, AN Yushkov, D Best, M Bruinsma, M Chao, I Eschrich, D Kirkby, AJ Lankford, M Mandelkern, RK Mommsen, W Roethel

Abstract:

The measurement of R, Rcp+, and Acp+ were presented. B- → D° K-decays with D° mesons decaying to non-CP and CP-even eigenstates were reconstructed. It was observed that the charged-particle tracking was provided by a five-layer silicon vertex tracker (SVT). It was shown that the parametrization of the particle identication PDF was performed by fitting with a Gaussian distribution.

More details from the publisher

More details

Measurements of branching fractions and CP-violating asymmetries in B meson decays to charmless two-body states containing a K⁰

Physical Review Letters 92:20 (2004)

Authors:

B Aubert, R Barate, D Boutigny, F Couderc, JM Gaillard, A Hicheur, Y Karyotakis, JP Lees, P Robbe, V Tisserand, A Zghiche, A Palano, A Pompili, JC Chen, ND Qi, G Rong, P Wang, YS Zhu, G Eigen, I Ofte, B Stugu, GS Abrams, AW Borgland, AB Breon, DN Brown, J Button-Shafer, RN Cahn, E Charles, CT Day, MS Gill, AV Gritsan, Y Groysman, RG Jacobsen, RW Kadel, J Kadyk, LT Kerth, YG Kolomensky, G Kukartsev, C LeClerc, ME Levi, G Lynch, LM Mir, PJ Oddone, TJ Orimoto, M Pripstein, NA Roe, A Romosan, MT Ronan, VG Shelkov, AV Telnov, WA Wenzel, K Ford, TJ Harrison, CM Hawkes, DJ Knowles, SE Morgan, RC Penny, AT Watson, NK Watson, K Goetzen, T Held, H Koch, B Lewandowski, M Pelizaeus, K Peters, H Schmuecker, M Steinke, JT Boyd, N Chevalier, WN Cottingham, MP Kelly, TE Latham, C Mackay, FF Wilson, K Abe, T Cuhadar-Donszelmann, C Hearty, TS Mattison, JA McKenna, D Thiessen, P Kyberd, AK McKemey, L Teodorescu, VE Blinov, AD Bukin, VB Golubev, VN Ivanchenko, EA Kravchenko, AP Onuchin, SI Serednyakov, YI Skovpen, EP Solodov, AN Yushkov, D Best, M Bruinsma, M Chao, I Eschrich, D Kirkby, AJ Lankford, M Mandelkern

Abstract:

The branching fractions and CP violating charge symmetries for B + → K0π+ and B0→K 0π0 were measured. The decays values for B 0→K̄0K0 and B0→K 0K̄0 were investigated. The upper limits on their branching functions were set at 2.5×10-6 and 1.8×10 -6 respectively, at the 90% CL. It was found that the branching fraction were consistent with previous measurements of the same quantities, but had nearly twice the statistical precision.

More details from the publisher

More details

Limits on the decay-rate difference of neutral B mesons and on CP, T, and CPT violation in B⁰B̄⁰ oscillations

Physical Review Letters 92:18 (2004)

Authors:

B Aubert, R Barate, D Boutigny, JM Gaillard, A Hicheur, Y Karyotakis, JP Lees, P Robbe, V Tisserand, A Zghiche, A Palano, A Pompili, JC Chen, ND Qi, G Rong, P Wang, YS Zhu, G Eigen, I Ofte, B Stugu, GS Abrams, AW Borgland, AB Breon, DN Brown, J Button-Shafer, RN Cahn, E Charles, CT Day, MS Gill, AV Gritsan, Y Groysman, RG Jacobsen, RW Kadel, J Kadyk, LT Kerth, YG Kolomensky, JF Kral, G Kukartsev, C LeClerc, ME Levi, G Lynch, LM Mir, PJ Oddone, TJ Orimoto, M Pripstein, NA Roe, A Romosan, MT Ronan, VG Shelkov, AV Telnov, WA Wenzel, K Ford, TJ Harrison, CM Hawkes, DJ Knowles, SE Morgan, RC Penny, AT Watson, NK Watson, T Deppermann, K Goetzen, T Held, H Koch, B Lewandowski, M Pelizaeus, K Peters, H Schmuecker, M Steinke, NR Barlow, JT Boyd, N Chevalier, WN Cottingham, MP Kelly, TE Latham, C Mackay, FF Wilson, K Abe, T Cuhadar-Donszelmann, C Hearty, TS Mattison, JA McKenna, D Thiessen, P Kyberd, AK McKemey, VE Blinov, AD Bukin, VB Golubev, VN Ivanchenko, EA Kravchenko, AP Onuchin, SI Serednyakov, YI Skovpen, EP Solodov, AN Yushkov, D Best, M Bruinsma, M Chao, D Kirkby, AJ Lankford, M Mandelkern

Abstract:

CP, T, and CPT violation in B0B̄0 oscillation and limits on the decay-rate difference of neutral B mesons were analyzed. Data and Monte Carlo samples were used to validate the analysis technique. It was found that the limit on CP and T violation in oscillations is independent of and consistent with the measurement based on an analysis of inclusive dilepton events. It was suggested that the fits to data subsamples selected by tagging category, running period, and Brec decay mode give consistent results.

More details from the publisher

More details

Measurement of the branching fraction and polarization for the decay B ^- → D⁰K^-

Physical Review Letters 92:14 (2004)

Authors:

B Aubert, R Barate, D Boutigny, JM Gaillard, A Hicheur, Y Karyotakis, JP Lees, P Robbe, V Tisserand, A Zghiche, A Palano, A Pompili, JC Chen, ND Qi, G Rong, P Wang, YS Zhu, G Eigen, I Ofte, B Stugu, GS Abrams, AW Borgland, AB Breon, DN Brown, J Button-Shafer, RN Cahn, E Charles, CT Day, MS Gill, AV Gritsan, Y Groysman, RG Jacobsen, RW Kadel, J Kadyk, LT Kerth, YG Kolomensky, JF Kral, G Kukartsev, C LeClerc, ME Levi, G Lynch, LM Mir, PJ Oddone, TJ Orimoto, M Pripstein, NA Roe, A Romosan, MT Ronan, VG Shelkov, AV Telnov, WA Wenzel, K Ford, TJ Harrison, CM Hawkes, DJ Knowles, SE Morgan, RC Penny, AT Watson, NK Watson, K Goetzen, T Held, H Koch, B Lewandowski, M Pelizaeus, K Peters, H Schmuecker, M Steinke, NR Barlow, JT Boyd, N Chevalier, WN Cottingham, MP Kelly, TE Latham, C Mackay, FF Wilson, K Abe, T Cuhadar-Donszelmann, C Hearty, TS Mattison, JA McKenna, D Thiessen, P Kyberd, AK McKemey, VE Blinov, AD Bukin, VB Golubev, VN Ivanchenko, EA Kravchenko, AP Onuchin, SI Serednyakov, YI Skovpen, EP Solodov, AN Yushkov, D Best, M Bruinsma, M Chao, D Kirkby, AJ Lankford, M Mandelkern, RK Mommsen

Abstract:

A study of the decay B- → D*0K*- based on a sample of 86 × 10 6 υ(4S) → BB̄ decays was presented. The measurement was found to be 2.5 times more precise than previous results. The measurement was based on heavy quark effective theory. The longitudinal polarization fraction of this decay was also measured.

More details from the publisher

More details

Malcolm John

Research theme

Sub department

Study of B± → J/Ψπ± and B± → J/ΨK± decays: Measurement of the ratio of branching fractions and search for direct CP violation

Authors:

Abstract:

Measurement of the branching fractions and CP asymmetry of B^- → D(CP)⁰CPK^- decays with the BABAR detector

Authors:

Abstract:

Measurements of branching fractions and CP-violating asymmetries in B meson decays to charmless two-body states containing a K⁰

Authors:

Abstract:

Limits on the decay-rate difference of neutral B mesons and on CP, T, and CPT violation in B⁰B̄⁰ oscillations

Authors:

Abstract:

Measurement of the branching fraction and polarization for the decay B ^- → D⁰K^-

Authors:

Abstract:

FIND US

CONTACT US

Malcolm John

Research theme

Sub department

Research groups

Study of B± → J/Ψπ± and B± → J/ΨK± decays: Measurement of the ratio of branching fractions and search for direct CP violation

Authors:

Abstract:

Measurement of the branching fractions and CP asymmetry of B- → D(CP)0CPK- decays with the BABAR detector

Authors:

Abstract:

Measurements of branching fractions and CP-violating asymmetries in B meson decays to charmless two-body states containing a K0

Authors:

Abstract:

Limits on the decay-rate difference of neutral B mesons and on CP, T, and CPT violation in B0B̄0 oscillations

Authors:

Abstract:

Measurement of the branching fraction and polarization for the decay B - → D*0K*-

Authors:

Abstract:

Measurement of the branching fractions and CP asymmetry of B^- → D(CP)⁰CPK^- decays with the BABAR detector

Measurements of branching fractions and CP-violating asymmetries in B meson decays to charmless two-body states containing a K⁰

Limits on the decay-rate difference of neutral B mesons and on CP, T, and CPT violation in B⁰B̄⁰ oscillations

Measurement of the branching fraction and polarization for the decay B ^- → D⁰K^-