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1. Measurement of the charged multiplicity of events containing bottom hadrons at Ec. m.=91 GeV

Author

Schumm, BA, Koetke, DS, Adolphsen, CE, Alexander, JP, Averill, D, Barish, BC, Barklow, T, Barnett, BA, Blockus, D, Boyarski, A, Brabson, B, Breakstone, A, Bulos, F, Burchat, PR, Burke, DL, Cence, RJ, Chapman, J, Chmeissani, M, Cords, D, Coupal, DP, Dauncey, P, DeStaebler, HC, Dorfan, JM, Drell, PS, Drewer, DC, Durrett, D, Elia, R, Feldman, GJ, Field, RC, Ford, WT, Fordham, C, Frey, R, Fujino, D, Gan, KK, Gero, E, Gidal, G, Glanzman, T, Goldhaber, G, Cadenas, JJ Gomez, Gratta, G, Hanson, G, Harr, R, Harral, B, Harris, FA, Hayes, K, Hearty, C, Heusch, CA, Hildreth, MD, Himel, T, Hinshaw, DA, Hong, SJ, Hutchinson, D, Hylen, J, Innes, WR, Jacobsen, RG, Jaros, JA, Jung, CK, Kadyk, JA, Kenney, C, King, M, Komamiya, S, Kowalski, LA, Kral, JF, Kuhlen, M, Labarga, L, Lankford, AJ, Le Diberder, F, Levi, ME, Litke, AM, Lou, XC, Lüth, V, McKenna, JA, Matthews, JAJ, Mattison, T, Moffeit, KC, Munger, CT, Murray, WN, Nash, J, Ogren, H, O'Shaughnessy, KF, Parker, SI, Peck, C, Perl, ML, Petradza, M, Pitthan, R, Porter, FC, Rankin, P, Rouse, FR, Rust, DR, Sadrozinski, HFW, Schwarz, AS, Seiden, A, Smith, JG, Snyder, A, Soderstrom, E, Stoker, DP, Stroynowski, R, Swartz, M, Thun, R, and Trilling, GH

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract

Using an impact-parameter tag to select an enriched sample of Z0bb» events, we have measured the difference between the average charged multiplicity of bb» and all hadronic Z0 decays to be 2.11.8(stat) 0.6(syst) tracks per event. The resulting total (nonleading) charged multiplicity for Z0 bb» events is 23.1(12.0)1.8 0.6 tracks. A comparison of this nonleading multiplicity to hadronic multiplicity data in the range of 10 to 60 GeV supports the hypothesis of flavor-independent hadronic fragmentation, and yields a measurement of the average energy fraction of bottom hadrons in Z0 decays of xEb=0.620.100.04. © 1992 The American Physical Society.

Published
1992

2. Measurement of the total hadronic cross section in e+e- annihilation at s=29 GeV

Author

von Zanthier, C, de Boer, W, Grindhammer, G, Hylen, J, Harral, B, Hearty, C, Labarga, L, Matthews, J, Schaad, M, Abrams, G, Adolphsen, CE, Akerlof, C, Alexander, JP, Alvarez, M, Baden, AR, Ballam, J, Barish, BC, Barklow, T, Barnett, BA, Bartelt, J, Blockus, D, Bonvicini, G, Boyarski, A, Boyer, J, Brabson, B, Breakstone, A, Brom, JM, Bulos, F, Burchat, PR, Burke, DL, Butler, F, Calvino, F, Cence, RJ, Chapman, J, Cords, D, Coupal, DP, DeStaebler, HC, Dorfan, DE, Dorfan, JM, Drell, PS, Feldman, GJ, Fernandez, E, Field, RC, Ford, WT, Fordham, C, Frey, R, Fujino, D, Gan, KK, Gidal, G, Glanzman, T, Goldhaber, G, Green, A, Grosse-Wiesmann, P, Haggerty, J, Hanson, G, Harr, R, Harris, FA, Hawkes, CM, Hayes, K, Herrup, D, Heusch, CA, Himel, T, Hoenk, M, Hutchinson, D, Innes, WR, Jaffre, M, Jaros, JA, Juricic, I, Kadyk, JA, Karlen, D, Kent, J, Klein, SR, Koska, W, Kozanecki, W, Lankford, AJ, Larsen, RR, Levi, ME, Li, Z, Litke, AM, Lüth, V, Meyer, DI, Milliken, BD, Moffeit, KC, Müller, L, Nash, J, Nelson, ME, Nitz, D, Ogren, H, O'Shaughnessy, KF, Parker, SI, Peck, C, Perl, ML, Petersen, A, Petradza, M, Porter, FC, Rankin, P, Riles, K, Rust, DR, Sadrozinski, HFW, and Schalk, TL

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Mathematical Physics, Mathematical Sciences, Physical Sciences, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract

A precise measurement of the ratio R of the total cross section e+e-hadrons to the pointlike cross section e+e-+- at a center-of-mass energy of 29.0 GeV is presented. The data were taken with the upgraded Mark II detector at the SLAC storage ring PEP. The result is R=3.920.050.09. The luminosity has been determined with three independent luminosity monitors measuring Bhabha scattering at different angular intervals. Recent calculations of higher-order QED radiative corrections are used to estimate the systematic error due to missing higher-order radiative corrections in the Monte Carlo event generators. © 1991 The American Physical Society.

Published
1991

3. Search for decays of the Z to unstable neutral leptons with mass between 2.5 and 22 GeV

Author

Burchat, PR, King, M, Abrams, GS, Adolphsen, CE, Averill, D, Ballam, J, Barish, BC, Barklow, T, Barnett, BA, Bartelt, J, Bethke, S, Blockus, D, Bonvicini, G, Boyarski, A, Brabson, B, Breakstone, A, Bulos, F, Burke, DL, Cence, RJ, Chapman, J, Chmeissani, M, Cords, D, Coupal, DP, Dauncey, P, DeStaebler, HC, Dorfan, DE, Dorfan, JM, Drewer, DC, Elia, R, Feldman, GJ, Fernandes, D, Field, RC, Ford, WT, Fordham, C, Frey, R, Fujino, D, Gan, KK, Gatto, C, Gero, E, Gidal, G, Glanzman, T, Goldhaber, G, Cadenas, JJ Gomez, Gratta, G, Grindhammer, G, Grosse-Wiesmann, P, Hanson, G, Harr, R, Harral, B, Harris, FA, Hawkes, CM, Hayes, K, Hearty, C, Heusch, CA, Hildreth, MD, Himel, T, Hinshaw, DA, Hong, SJ, Hutchinson, D, Hylen, J, Innes, WR, Jacobsen, RG, Jaros, JA, Jung, CK, Kadyk, JA, Kent, J, Klein, SR, Koetke, DS, Komamiya, S, Koska, W, Kowalski, LA, Kozanecki, W, Kral, JF, Kuhlen, M, Labarga, L, Lankford, AJ, Larsen, RR, Le Diberder, F, Levi, ME, Litke, AM, Lou, XC, Lüth, V, McKenna, JA, Matthews, JAJ, Mattison, T, Milliken, BD, Moffeit, KC, Munger, CT, Murray, WN, Nash, J, Ogren, H, O'Shaughnessy, KF, Parker, SI, Peck, C, Perl, ML, Perrier, F, Petradza, M, Pitthan, R, Porter, FC, and Rankin, P

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract

Using the sample of neutral vector bosons (Z's) produced at the SLAC Linear Collider and detected with the Mark II detector, we search for the decay of the Z to a pair of particles, one of which decays to two charged particles. The observed number of Z decays with this signature excludes, at a confidence level greater than 95%, the decay of the Z to a pair of fourth-generation Dirac neutrinos with mass between 2.5 and 22 GeV, a decay length less than about 1 cm, and coupling to any of the first three generations of charged leptons. This is the first time the existence of such a lepton coupling to the ± has been excluded by a direct search. © 1990 The American Physical Society.

Published
1990

4. Upper limits on D± and B± decays to two leptons plus π± or K±

Author

Weir, AJ, Klein, SR, Abrams, G, Adolphsen, CE, Akerlof, C, Alexander, JP, Alvarez, M, Amidei, D, Baden, AR, Ballam, J, Barish, BC, Barklow, T, Barnett, BA, Bartelt, J, Blockus, D, Bonvicini, G, Boyarski, A, Boyer, J, Brabson, B, Breakstone, A, Brom, JM, Bulos, F, Burchat, PR, Burke, DL, Butler, F, Calvino, F, Cence, RJ, Chapman, J, Cords, D, Coupal, DP, DeStaebler, HC, Dorfan, DE, Dorfan, JM, Drell, PS, Feldman, GJ, Fernandez, E, Field, RC, Ford, WT, Fordham, C, Frey, R, Fujino, D, Gan, KK, Gidal, G, Gladney, L, Glanzman, T, Gold, MS, Goldhaber, G, Green, A, Grosse-Wiesmann, P, Haggerty, J, Hanson, G, Harr, R, Harris, FA, Hawkes, CM, Hayes, K, Herrup, D, Heusch, CA, Himel, T, Hollebeek, RJ, Hutchinson, D, Hylen, J, Innes, WR, Jaffre, M, Jaros, JA, Juricic, I, Kadyk, JA, Karlen, D, Kent, J, Koska, W, Kozanecki, W, Lankford, AJ, Larsen, RR, LeClaire, BW, Levi, ME, Litke, AM, Lockyer, NS, Lüth, V, Matthews, JAJ, Meyer, DI, Milliken, BD, Moffeit, KC, Müller, L, Nash, J, Nelson, ME, Nitz, D, Ogren, H, Ong, RA, O'Shaughnessy, KF, Parker, SI, Peck, C, Petersen, A, Petradza, M, Porter, FC, Rankin, P, Richter, B, Riles, K, Rowson, PC, Rust, DR, Sadrozinski, HFW, and Schaad, T

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract

Data taken by the Mark II detector at the SLAC e+e- storage ring PEP was used to search for exclusive decays of D and B mesons into two charged leptons plus a charged pion or kaon. All possible charge and lepton combinations consistent with charge conservation were considered and no evidence for any signals was found. We obtain upper limits for the various branching ratios ranging from 2.5×10-3 to 9.2×10-3, at a 90% confidence level. Some of these limits can be used to constrain leptoquark masses in various models. © 1990 The American Physical Society.

Published
1990

5. Multihadronic events at Ec.m.=29 GeV and predictions of QCD models from Ec.m.=29 GeV to Ec.m.=93 GeV

Author

Petersen, A, Abrams, G, Adolphsen, CE, Akerlof, C, Alexander, JP, Alvarez, M, Amidei, D, Baden, AR, Ballam, J, Barish, BC, Barklow, T, Barnett, BA, Bartelt, J, Blockus, D, Bonvicini, G, Boyarski, A, Boyer, J, Brabson, B, Breakstone, A, Brom, JM, Bulos, F, Burchat, PR, Burke, DL, Butler, F, Calvino, F, Cence, RJ, Chapman, J, Cords, D, Coupal, DP, DeStaebler, HC, Dorfan, DE, Dorfan, JM, Drell, PS, Feldman, GJ, Fernandez, E, Field, RC, Ford, WT, Fordham, C, Frey, R, Fujino, D, Gan, KK, Gidal, G, Gladney, L, Glanzman, T, Gold, MS, Goldhaber, G, Golding, L, Green, A, Grosse-Wiesmann, P, Haggerty, J, Hanson, G, Harr, R, Harris, FA, Hawkes, CM, Hayes, K, Herrup, D, Heusch, CA, Himel, T, Hoenk, M, Hollebeek, RJ, Hutchinson, D, Hylen, J, Innes, WR, Jaffre, M, Jaros, JA, Juricic, I, Kadyk, JA, Karlen, D, Kent, J, Klein, SR, Koide, A, Koska, W, Kozanecki, W, Lankford, AJ, Larsen, RR, LeClaire, BW, Levi, ME, Li, Z, Litke, AM, Lockyer, NS, Matteuzzi, C, Matthews, JAJ, Meyer, DI, Milliken, BD, Moffeit, KC, Müller, L, Nash, J, Nelson, ME, Nitz, D, Ogren, H, Ong, RA, O’Shaughnessy, KF, Parker, SI, Peck, C, Perl, ML, Petradza, M, Porter, FC, Rankin, P, Richter, B, and Riles, K

Subjects
Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract

Multihadronic e+e- annihilation events at a center-of-mass energy of 29 GeV have been studied with both the original (PEP 5) Mark II and the upgraded Mark II detectors. Detector-corrected distributions from global shape analyses such as aplanarity, Q2-Q1, sphericity, thrust, minor value, oblateness, and jet masses, and inclusive charged-particle distributions including x, rapidity, p, and particle flow are presented. These distributions are compared with predictions from various multihadron event models which use leading-logarithmic shower evolution or QCD matrix elements at the parton level and string or cluster fragmentation for hadronization. The new generation of parton-shower models gives, on the average, a better description of the data than the previous parton-shower models. The energy behavior of these models is compared to existing e+e- data. The predictions of the models at a center-of-mass energy of 93 GeV, roughly the expected mass of the Z0, are also presented. © 1988 The American Physical Society.

Published
1988

6. Determination of αs from energy-energy correlations in e+e- annihilation at 29 GeV

Author

Wood, DR, Petersen, A, Abrams, G, Adolphsen, CE, Akerlof, C, Alexander, JP, Alvarez, M, Amidei, D, Baden, AR, Ballam, J, Barish, BC, Barklow, T, Barnett, BA, Bartelt, J, Blockus, D, Bonvicini, G, Boyarski, A, Boyer, J, Brabson, B, Breakstone, A, Brom, JM, Bulos, F, Burchat, PR, Burke, DL, Butler, F, Calvino, F, Cence, RJ, Chapman, J, Cords, D, Coupal, DP, DeStaebler, HC, Dorfan, DE, Dorfan, JM, Drell, PS, Feldman, GJ, Fernandez, E, Field, RC, Ford, WT, Fordham, C, Frey, R, Fujino, D, Gan, KK, Gidal, G, Gladney, L, Glanzman, T, Gold, MS, Goldhaber, G, Golding, L, Green, A, Grosse-Wiesmann, P, Haggerty, J, Hanson, G, Harr, R, Harris, FA, Hawkes, CM, Hayes, K, Herrup, D, Heusch, CA, Himel, T, Hoenk, M, Hollebeek, RJ, Hutchinson, D, Hylen, J, Innes, WR, Jaffre, M, Jaros, JA, Juricic, I, Kadyk, JA, Karlen, D, Kent, J, Klein, SR, Koide, A, Koska, W, Kozanecki, W, Lankford, AJ, Larsen, RR, LeClaire, BW, Levi, ME, Li, Z, Litke, AM, Lockyer, NS, Lüth, V, Matteuzzi, C, Matthews, JAJ, Meyer, DI, Milliken, BD, Moffeit, KC, Müller, L, Nash, J, Nelson, ME, Nitz, D, Ogren, H, Ong, RA, O’Shaughnessy, KF, Parker, SI, Peck, C, Perl, ML, Petradza, M, Porter, FC, and Rankin, P

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Affordable and Clean Energy, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract

We have studied the energy-energy correlation in e+e- annihilation into hadrons at s =29 GeV using the Mark II detector at the SLAC storage ring PEP. We find to O(s2) that s=0.1580.0030.008 if hadronization is described by string fragmentation. Independent fragmentation schemes give s=0.100.14, and give poor agreement with the data. A leading-log shower fragmentation model is found to describe the data well. © 1988 The American Physical Society.

Published
1988

7. Measurement of sin 2 beta with hadronic and previously unused muonic J/psi decays

Author

Aubert, B, Barate, R, Boutigny, D, Gaillard, JM, Hicheur, A, Karyotakis, Y, Lees, JP, Robbe, P, Tisserand, V, Zghiche, A, Palano, A, Stoker, DP, Buchanan, C, Hartfiel, BL, Shen, BC, del Re, D, Hadavand, HK, Hill, EJ, MacFarlane, DB, Paar, HP, Rahatlou, S, Pompili, A, Schwanke, U, Sharma, V, Berryhill, JW, Campagnari, C, Dahmes, B, Kuznetsova, N, Levy, SL, Long, O, Lu, A, Mazur, MA, Chen, JC, Richman, JD, Verkerke, W, Beck, TW, Beringer, J, Eisner, AM, Heusch, CA, Lockman, WS, Schalk, T, Schmitz, RE, Schumm, BA, Qi, ND, Seiden, A, Turri, M, Walkowiak, W, Williams, DC, Wilson, MG, Albert, J, Chen, E, Dubois-Felsmann, GP, Dvoretskii, A, Hitlin, DG, Rong, G, Narsky, I, Porter, FC, Ryd, A, Samuel, A, Yang, S, Jayatilleke, S, Mancinelli, G, Meadows, BT, Sokoloff, MD, Abe, T, Wang, P, Blanc, F, Bloom, P, Chen, S, Clark, PJ, Ford, WT, Nauenberg, U, Olivas, A, Rankin, P, Roy, J, Smith, JG, Zhu, YS, van Hoek, WC, Zhang, L, Harton, JL, Hu, T, Soffer, A, Toki, WH, Wilson, RJ, Zhang, J, Aleksan, R, Emery, S, Eigen, G, Gaidot, A, Ganzhur, SF, Giraud, PF, de Monchenault, GH, Kozanecki, W, Langer, M, Legendre, M, London, GW, Mayer, B, Schott, G, Ofte, I, Vasseur, G, Yeche, C, Zito, M, Altenburg, D, Brandt, T, Brose, J, Colberg, T, Dickopp, M, Dubitzky, RS, Hauke, A, Stugu, B, Lacker, HM, Maly, E, Muller-Pfefferkorn, R, Nogowski, R, Otto, S, Schubert, J, Schubert, KR, Schwierz, R, Spaan, B, Wilden, L, Abrams, GS, Bernard, D, Bonneaud, GR, Brochard, F, Cohen-Tanugi, J, Grenier, P, Thiebaux, C, Vasileiadis, G, Verderi, M, Khan, A, Lavin, D, Borgland, AW, Muheim, F, Playfer, S, Swain, JE, Andreotti, M, Azzolini, V, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Luppi, E, Breon, AB, Negrini, M, Piemontese, L, Sarti, A, Treadwell, E, Anulli, F, Baldini-Ferroli, R, Calcaterra, A, de Sangro, R, Falciai, D, Finocchiaro, G, Brown, DN, Patteri, P, Peruzzi, IM, Piccolo, M, Zallo, A, Buzzo, A, Capra, R, Contri, R, Crosetti, G, Lo Vetere, M, Macri, M, Button-Shafer, J, Monge, MR, Passaggio, S, Patrignani, C, Robutti, E, Santroni, A, Tosi, S, Bailey, S, Morii, M, Won, E, Bhimji, W, Cahn, RN, Bowerman, DA, Dauncey, PD, Egede, U, Eschrich, I, Gaillard, JR, Morton, GW, Nash, JA, Sanders, P, Taylor, GP, Grenier, GJ, Charles, E, Lee, SJ, Mallik, U, Cochran, J, Crawley, HB, Lamsa, J, Meyer, WT, Prell, S, Rosenberg, EI, Yi, J, Biasini, M, Day, CT, Pioppi, M, Davier, M, Grosdidier, G, Hocker, A, Laplace, S, Le Diberder, F, Lepeltier, V, Lutz, AM, Petersen, TC, Plaszczynski, S, Gill, MS, Schune, MH, Tantot, L, Wormser, G, Brigljevic, V, Cheng, CH, Lange, DJ, Wright, DM, Bevan, AJ, Coleman, JP, Fry, JR, Gritsan, AV, Gabathuler, E, Gamet, R, Kay, M, Parry, RJ, Payne, DJ, Sloane, RJ, Touramanis, C, Back, JJ, Harrison, PF, Shorthouse, HW, Groysman, Y, Strother, P, Vidal, PB, Brown, CL, Cowan, G, Flack, RL, Flaecher, HU, George, S, Green, MG, Kurup, A, Marker, CE, Jacobsen, RG, McMahon, TR, Ricciardi, S, Salvatore, F, Vaitsas, G, Winter, MA, Brown, D, Davis, CL, Allison, J, Barlow, NR, Barlow, RJ, Kadel, RW, Hart, PA, Jackson, F, Lafferty, GD, Lyon, AJ, Weatherall, JH, Williams, JC, Farbin, A, Jawahery, A, Kovalskyi, D, Lae, CK, Kadyk, J, Lillard, V, Roberts, DA, Blaylock, G, Dallapiccola, C, Flood, KT, Hertzbach, SS, Kofler, R, Koptchev, VB, Moore, TB, Saremi, S, Kerth, LT, Staengle, H, Willocq, S, Cowan, R, Sciolla, G, Taylor, F, Yamamoto, RK, Mangeol, DJJ, Milek, M, Patel, PM, Robertson, SH, Kolomensky, YG, Lazzaro, A, Palombo, F, Bauer, JM, Cremaldi, L, Eschenburg, V, Godang, R, Kroeger, R, Reidy, J, Sanders, DA, Summers, DJ, Kral, JF, Zhao, HW, Brunet, S, Cote-Ahern, D, Taras, P, Nicholson, H, Raven, G, Cartaro, C, Cavallo, N, De Nardo, G, Fabozzi, F, Kukartsev, G, Gatto, C, Lista, L, Paolucci, P, Piccolo, D, Sciacca, C, LoSecco, JM, Gabriel, TA, Brau, B, Gan, KK, Honscheid, K, LeClerc, C, Hufnagel, D, Kagan, H, Kass, R, Pulliam, T, Wong, QK, Brau, J, Frey, R, Potter, CT, Sinev, NB, Strom, D, Levi, ME, Torrence, E, Colecchia, F, Dorigo, A, Galeazzi, F, Margoni, M, Morandin, M, Posocco, M, Rotondo, M, Simonetto, F, Stroili, R, Lynch, G, Tiozzo, G, Voci, C, Benayoun, M, Briand, H, Chauveau, J, David, P, de la Vaissiere, C, Del Buono, L, Hamon, O, John, MJJ, Mir, LM, Leruste, P, Ocariz, J, Pivk, M, Roos, L, Stark, J, T'Jampens, S, Therin, G, Manfredi, PF, Re, V, Behera, PK, Oddone, PJ, Gladney, L, Guo, QH, Panetta, J, Angelini, C, Batignani, G, Bettarini, S, Bondioli, M, Bucci, F, Calderini, G, Carpinelli, M, Orimoto, TJ, Del Gamba, V, Forti, F, Giorgi, MA, Lusiani, A, Marchiori, G, Martinez-Vidal, F, Morganti, M, Neri, N, Paoloni, E, Rama, M, Pripstein, M, Rizzo, G, Sandrelli, F, Walsh, J, Haire, M, Judd, D, Paick, K, Wagoner, DE, Cavoto, G, Danielson, N, Elmer, P, Roe, NA, Lu, C, Miftakov, V, Olsen, J, Smith, AJS, Tanaka, HA, Varnes, EW, Bellini, F, Faccini, R, Ferrarotto, F, Ferroni, F, Romosan, A, Gaspero, M, Mazzoni, MA, Morganti, S, Pierini, M, Piredda, G, Tehrani, FS, Voena, C, Christ, S, Wagner, G, Waldi, R, Ronan, MT, Adye, T, De Groot, N, Franek, B, Geddes, NI, Gopal, GP, Olaiya, EO, Xella, SM, Purohit, MV, Weidemann, AW, Yumiceva, FX, Shelkov, VG, Aston, D, Bartoldus, R, Berger, N, Boyarski, AM, Buchmueller, OL, Convery, MR, Coupal, DP, Dong, D, Dorfan, J, Dujmic, D, Telnov, AV, Dunwoodie, W, Field, RC, Glanzman, T, Gowdy, SJ, Grauges-Pous, E, Hadig, T, Halyo, V, Hryn'ova, T, Innes, WR, Jessop, CP, Wenzel, WA, Kelsey, MH, Kim, P, Kocian, ML, Langenegger, U, Leith, DWGS, Luitz, S, Luth, V, Lynch, HL, Marsiske, H, Messner, R, Ford, K, Muller, DR, O'Grady, CP, Ozcan, VE, Perazzo, A, Perl, M, Petrak, S, Ratcliff, BN, Roodman, A, Salnikov, AA, Schindler, RH, Harrison, TJ, Schwiening, J, Simi, G, Snyder, A, Soha, A, Stelzer, J, Su, D, Sullivan, MK, Va'vra, J, Wagner, SR, Weaver, M, Hawkes, CM, Weinstein, AJR, Wisniewski, WJ, Wright, DH, Young, CC, Burchat, PR, Edwards, AJ, Meyer, TI, Petersen, BA, Roat, C, Ahmed, S, Knowles, DJ, Alam, MS, Ernst, JA, Saleem, M, Wappler, FR, Bugg, W, Krishnamurthy, M, Spanier, SM, Eckmann, R, Kim, H, Ritchie, JL, Morgan, SE, Schwitters, RF, Izen, JM, Kitayama, I, Lou, XC, Ye, S, Bianchi, F, Bona, M, Gallo, F, Gamba, D, Borean, C, Penny, RC, Bosisio, L, Della Ricca, G, Dittongo, S, Grancagnolo, S, Lanceri, L, Poropat, P, Vitale, L, Vuagnin, G, Panvini, RS, Banerjee, S, Watson, AT, Brown, CM, Fortin, D, Jackson, PD, Kowalewski, R, Roney, JM, Band, HR, Dasu, S, Datta, M, Eichenbaum, AM, Johnson, JR, Watson, NK, Kutter, PE, Li, H, Liu, R, Di Lodovico, F, Mihalyi, A, Mohapatra, AK, Pan, Y, Prepost, R, Sekula, SJ, von Wimmersperg-Toeller, JH, Goetzen, K, Wu, J, Wu, SL, Yu, Z, Neal, H, BABAR Collaboration, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schmuecker, H, Steinke, M, Boyd, JT, Chevalier, N, Cottingham, WN, Kelly, MP, Latham, TE, Mackay, C, Wilson, FF, Abe, K, Cuhadar-Donszelmann, T, Hearty, C, Mattison, TS, McKenna, JA, Thiessen, D, Kyberd, P, McKemey, AK, Blinov, VE, Bukin, AD, Golubev, VB, Ivanchenko, VN, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Yushkov, AN, Best, D, Bruinsma, M, Chao, M, Kirkby, D, Lankford, AJ, Mandelkern, M, Mommsen, RK, and Roethel, W

Subjects
BABAR, SLAC, High Energy Physics::Experiment, Nuclear Experiment
Abstract

We report a measurement of the CP-violation parameter sin 2beta with B-0-->J/psiK(S)(0) decays in which the J/psi decays to hadrons or to muons that do not satisfy our standard identification criteria. With a sample of 88 million B (B) over bar events collected by the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC, we reconstruct 100+/-17 such events, with J/psi-->pi(+)pi(-)pi(0) being the most prevalent, and measure sin 2beta=1.56+/-0.42(stat)+/-0.21(syst).

Published
2004

8. Study ofCP-violating asymmetries inB0→π+π−,K+π−decays

Author

D. Piccolo, R. Bartoldus, Moore Tb, Zongfu Yu, R. L. Diberder, Jg Smith, E. Maly, Tehrani Fs, N. Kuznetsova, M.O. Dima, I.J. Scott, Back Jj, J. A. Nash, M. Lo Vetere, Coupal Dp, J. A. McKenna, Peter S. Kim, Guo Qh, I. Kitayama, R. Muller Pfefferkorn, Patel Pm, Meyer Wt, P. McGrath, F. Brochard, S. B. Chun, J. M. Izen, A. Zallo, G.L. Godfrey, Schindler Rh, Y. Groysman, L. Wilden, G. Lynch, Chen Jc, M. L. Kocian, Boyd Jt, W. A. Wenzel, Green Mg, F. Di Lodovico, Fischer Pa, F. Colecchia, Giorgi Ma, J. A. Kadyk, Bernard Aubert, Roney Jm, Catherine Kirsty Mackay, R. C. W. Henderson, FS Tehrani, Knowles Dj, Dauncey Pd, David J. Smith, B. N. Ratcliff, Boyarski Am, Vuko Brigljevic, Meadows Bt, A. Kurup, Potter Rjl, M. Bondioli, Y. Karyotakis, C. De La Vaissiere, C. A. Heusch, E.T. Simopoulos, H. Nicholson, M. E. Levi, S. Luitz, D.H. Coward, Maddie Mc Kay, N. Savvas, V. E. Blinov, Martino Margoni, V. N. Ivanchenko, E. Roussot, N. K. Copty, D. J. Payne, U. Nauenberg, T. Schalk, L. Del Buono, V. Zacek, M. Chao, C. Cartaro, N. D. Qi, Denis Bernard, S. Devmal, Nief Jy, M. M. Macri, M. A. Mazzoni, G. Wormser, A.K. McKemey, V. Speziali, Teresa Barillari, R. Schwierz, Dc Williams, Hawkes Cm, Gabriella Sciolla, W. M. Bugg, Jh von Wimmersperg-Toeller, Pm M. Patel, F. Sandrelli, D. Lavin, Ulrik Egede, S. Jayatilleke, Spanier Sm, E. I. Rosenberg, Mg Green, F. Anulli, S. Dittongo, S. Ferrag, S. H. Robertson, C. H. Cheng, J.F. Kral, K. T. McDonald, Pierluigi Paolucci, Simopoulos Et, J.Y. Nief, R. Prepost, H. Schmuecker, R. Aleksan, F. Galeazzi, N. Dyce, Herbert Koch, Mauro Morandin, S. Bettarini, R. Cowan, A. Samuel, Levi Me, Cahn Rn, T.R. McMahon, P. Sanders, Nash Ja, S. J. Sekula, A. Jawahery, Sandrine Laplace, V.G. Shelkov, Schaffner Sf, C. M. Hawkes, P. F. Harrison, D. L. Wagner, O'Neale Sw, Muller, L. Piemontese, Geddes Ni, Urs Langenegger, Brown Cm, Johnson, Gritsan Av, J. Stelzer, Clark Pj, B. T. Meadows, Harton Jl, G. Raven, Owen Rosser Long, Blinov Ve, P.F. Manfredi, Silvano Tosi, Serednyakov Si, F. Muheim, A. Seiden, A. D. Lesquen, C. Gatto, A. Lu, G. De Nardo, R. Hamilton, C. D. Buchanan, Amir Farbin, London Gw, D. W. G. S. Leith, W. N. Cottingham, W. Bhimji, Panvini Rs, Lydia Roos, C. Voci, Ford Wt, Golubev Vb, R. J. Sloane, M. Zito, Monika Grothe, Ry Y. Zhu, Qi Nd, Lou Xc, S. W. O'Neale, John R. Fry, M. D. Sokoloff, C. M. Brown, Chen Gp, Roberts Da, A. Hicheur, Hitlin Dg, Cheng Ch, Bonneaud Gr, Tim Adye, A. A. Salnikov, Elliott D. Bloom, A. Olivas, A. P. Onuchin, M. Morganti, E. Lamanna, Payne Dj, Jc Chen, Sinev Nb, J.C. Andress, C. Lu, D. Judd, Sven Menke, E. A. Kravchenko, M. Weaver, von Wimmersperg-Toeller Jh, Manfredi Pf, Geld Tl, P. R. Burchat, Godfrey Gl, Losecco Jm, E. Torassa, S. Playfer, G.P. Chen, Jm Losecco, E. Gabathuler, W. R. Innes, F. C. Porter, Schieck, J.P. Martin, G. Calderini, G. Mancinelli, Peruzzi Im, Andress Jc, S. Bagnasco, Bukin Ad, R. Baldini-Ferroli, Bukin Da, Grillo Aa, C. C. Young, Crisostomo Sciacca, D. Aston, W. T. Meyer, Wouter Verkerke, J. W. Lamsa, C. E. Marker, P. Patteri, D. Kirkby, E. W. Varnes, C. P. O'Grady, M. Serra, R. Convery, Meyer Ti, Wc van Hoek, D.L. Wagner, G. Vasileiadis, C. LeClerc, J. Chauveau, Roe Na, P. F. Giraud, K. Goetzen, Marcel Kunze, G. Vasseur, Roland Bernet, Barlow Rj, W. Dunwoodie, Huffer Me, W. C. Van, Onuchin Ap, J. Va’vra, D.E. Dorfan, Kerth Lt, Luigi Del Buono, A. V. Telnov, G. Rizzo, F. Jackson, Dubois Felsmann Gp, Scott D. Metzler, L. Bosisio, R. D. Sangro, Jacobsen Rg, Sekula Sj, C. D. La, Alexis Pompili, Tetiana Hryn'ova, J. Ocariz, Cottingham Wn, L.S. Rochester, J. J. Back, S. Versille, C. Thiebaux, D. S. Best, R. Contri, H. Marsiske, Crawley Hb, Dorfan De, K. V. Bibber, G. H. De, J. M. Roney, Lees Jp, Brown Dn, Nicolas Berger, S. M. Spanier, Kravchenko Ea, Dima Mo, R. de Sangro, Barlow Nr, P. Dixon, R. Liu, P. Poropat, C. Borean, Luca Lista, H. Staengle, H. W. Shorthouse, K. Arisaka, Mazzoni Ma, Kolomensky Yg, O. Hamon, Porter Fc, R. Le Diberder, S. L. Wu, Wt T. Ford, Y. S. Zhu, R. Seitz, Ivo M. Gough Eschrich, N. A. Roe, T.M.B. Kordich, K. T. Flood, A. R. Clark, A. Hocker, Azzopardi De, Jl Harton, Gh de Monchenault, S. J. Gowdy, T. J. Harrison, V. Lillard, Swain Je, T. Deppermann, J. E. Brau, Kelsey Mh, T. Handler, J. Allison, A. W. Weidemann, J. G. Smith, Convery Mr, G. W. London, A. B. Breon, Vg G. Koptchev, Coward Dh, R. C. Penny, M. Iwasaki, L. Turnbull, Marcello Rotondo, S. Otto, F. Bulos, Am Lutz, N.J.W. Gunawardane, Maurizio Lo Vetere, Lankford Aj, Mi Williams, M. Carpinelli, Anthony Pl, W. H. Toki, A. Santroni, Davis Cl, R. J. Wilson, A. A. Korol, W. Kozanecki, D. Wright, Richard Mount, Giuseppe Della Ricca, Michael Steinke, Sloane Rj, S. Morganti, W. J. Wisniewski, L. M. Cremaldi, D. Del Re, Martin Jp, P. D. Jackson, S. Willocq, M. Dickopp, G. Della Ricca, Patrick Robbe, D. Thiessen, C. P. Jessop, Tanaka Ha, T. S. Mattison, J.J. Reidy, Eisner Am, Ralph Müller-Pfefferkorn, Sridhara Dasu, Robertson Sh, Schubert Kr, Helen R. Quinn, J. Roy, V. Lepeltier, Steve McMahon, R. K. Yamamoto, S. J. Yellin, J. Schwiening, Paola Grosso, S. Yang, Valerio Re, Shelkov Vg, Mattison Ts, E.D. Frank, G. Triggiani, Eichenbaum Am, Mcmahon Tr, M. K. Sullivan, Y. B. Pan, O'Grady Cp, X. C. Lou, S. Passaggio, Telnov Vi, F. Lodovico, E. Treadwell, M. Benayoun, McDonald Kt, M.G. Pia, Janice Button-Shafer, A. J.R. Weinstein, D. N. Brown, Francesco Fabozzi, D. Boutigny, J. J. Walsh, R. Kowalewski, F. Dal Corso, A. Tumanov, R. S. Dubitzky, Schune Mh, A. M. Eisner, A. V. Gritsan, Pieter David, A. Gaidot, E. Chen, Q. H. Guo, B. Stugu, H. B. Crawley, Rochester Ls, M. S. Gill, D. J. Knowles, D. H. Wright, M. Turri, M.L. Aspinwall, J.E. Swain, S. Christ, D. Su, J.M. Gaillard, M. Verderi, P. J. Clark, Levy Sl, Burchat Pr, A. C. Forti, F. X. Yumiceva, B. Spaan, G. R. Bonneaud, D. G. Hitlin, P. Rankin, S. Fahey, H. Singh, G. S. Abrams, Ozcan Ve, Skovpen Yi, Mathieu Langer, A. Palano, G. P. Gopal, Yuehong Xie, D. Gamba, P.L. Anthony, Ronan Mt, L. Gladney, T. Glanzman, J. Blouw, A. N. Yushkov, Johann Cohen-Tanugi, H. Briand, Matteo Rama, Yg Kolomensky, G. Blaylock, Penny Rc, A. D. Bukin, P. Strother, Wagner, Ganzhur Sf, Kocian Ml, A. Roodman, R. S. Panvini, V. Miftakov, Izen Jm, V. E. Ozcan, Borgland Aw, Lynch Hl, D. Falciai, N. Cavallo, H. F.W. Sadrozinski, Nicola Neri, G. D. Lafferty, M. Piccolo, S. Emery, G. Cavoto, J. Dorfan, G. Vuagnin, T.I. Meyer, Kadel Rw, M. Pripstein, Purohit Mv, Macfarlane Db, Stéphane Plaszczynski, Emilio Leonardi, T. Pulliam, Roland Waldi, Sullivan Mk, S. L. Levy, Mckemey Ak, K. Paick, S. Prell, A. Dorigo, R.M. Bionta, R. C. Field, Clark Ar, M. V. Purohit, V. I. Telnov, Sophie Trincaz-Duvoid, Innes Wr, F. Ferroni, A. M. Boyarski, Bryan Dahmes, K. van Bibber, Michael S. Witherell, U. Mallik, R. Faccini, S. Petrak, D. A. Sanders, F. Salvatore, Koptchev Vg, J. Oyang, J. Albert, F. Ferrarotto, A. J. Lankford, Richman Jd, T. B. Moore, Bionta Rm, Moffeit Kc, J. Beringer, H. O. Cohn, G. Batignani, Jie Zhang, T.L. Geld, A. Romosan, Aspinwall Ml, S. M. Xella, Gaillard Jm, J.H. Weatherall, N. R. Barlow, B. Foster, Monge Mr, V. Luth, Marcella Bona, B. Serfass, Aron Soha, Peter Elmer, F. Palombo, Marker Ce, D. R. Johnson, B. Franek, J. Brose, R. Frey, G. P. Dubois-Felsmann, B. Lewandowski, A. Anjomshoaa, Vivek Sharma, Korol Aa, M. H. Kelsey, James D. Olsen, J. D. Richman, D. A. Bowerman, A. Hauke, A. Calcaterra, Db B. MacFarlane, M. G. Wilson, Jackson Pd, D. A. Roberts, Anders Ryd, J.R.G. Alsmiller, C. Patrignani, Marcello Giorgi, V. Tisserand, S.F. Schaffner, Hertzbach Ss, Bowerman Da, F. E. Taylor, M. Mandelkern, Gabriel Ta, A. Snyder, J. R. Johnson, Rp Johnson, F. F. Wilson, Frank Ed, A. Soffer, Dubitzky Rs, Scott Ij, C. Roat, L. Lanceri, Stephen Robert Wagner, J.H. Panetta, M. George, Als Smith, Bauer Jm, Band Hr, Michael C. Carroll, L. T. Kerth, N. I. Geddes, Serbo Vv, C.S. Sutton, J. Fullwood, D. P. Stoker, Mckenna Ja, K. R. Schubert, Ph Leruste, S. Jolly, Ss Hertzbach, Field Rc, T. A. Gabriel, G. Eigen, D.P. Coupal, T. Himel, Benjamin Brau, N. K. Watson, Stoker Dp, J. M. Bauer, P. C. Bloom, A. Lusiani, T. Colberg, I. Adam, P.A. Hart, C. Dallapiccola, Stephane T'Jampens, Ivanchenko Vn, S. F. Ganzhur, H. R. Band, R. E. Schmitz, M. Falbo, J. P. Lees, A. M. Eichenbaum, F. D. Corso, B. Mayer, Raymond Gamet, Kral Jf, W. S. Lockman, Sokoloff, Tobias M. Haas, Giovanni Crosetti, Summers Dj, Jane S. Tinslay, Enrico Robutti, Flood Kt, G. Michelon, J. Cochran, Harrison Pf, C. Yeche, Oddone Pj, M. L. Perl, Gill Ms, S. Ricciardi, Bright Thomas Pg, T. Schietinger, K.G. Baird, Jan Stark, Guglielmo De Nardo, T. Brandt, R. Stroili, J. T. Boyd, R. Monge, I. M. Peruzzi, Lacker Hm, Pastore Fc, R. N. Cahn, Sanders Da, Sutton Cs, Duncan A. Brown, Hart Pa, D.A. Bukin, P. J. Oddone, Ratcliff Bn, E. Paoloni, Toki Wh, R. W. Kadel, V.V. Serbo, Jessop Cp, P.B. Vidal, C. Hast, D. J. Lange, G. Piredda, Y. I. Skovpen, R. Messner, S. I. Serednyakov, F. Bianchi, David Wallom, M. T. Ronan, A. A. Grillo, Heusch Ca, A. Dvoretskii, M. E. Huffer, M. Morii, Rosenberg Ei, Lafferty Gd, Breon Ab, Ha A. Tanaka, Pu Wang, K. Moffeit, A. de Lesquen, Sh. Rahatlou, Johnson Rp, Lange Dj, Abrams Gs, C. Touramanis, A. W. Borgland, Gowdy Sj, D.E. Azzopardi, G. Grosdidier, Kazuo Abe, R. R. Kofler, M. Krishnamurthy, Buzykaev Ar, D. E. Wagoner, Gabriele Simi, C. L. Davis, H. A. Neal, Lockman Ws, F. Simonetto, M. Haire, G. Vaitsas, R. H. Schindler, Fry, N. De Groot, Schumm Ba, Claudio Campagnari, M. Mugge, Nb Sinev, F. Forti, Krisztian Peters, R. Kroeger, P. D. Dauncey, Harrison Tj, G. Rong, A. T. Watson, Giraud Pf, V. Eschenburg, H. Hu, Pia Mg, P. Taras, P.G. Bright-Thomas, A. R. Buzykaev, H. M. Lacker, Wolfgang Walkowiak, H. L. Lynch, S. George, R. G. Jacobsen, Shorthouse Hw, G. Finocchiaro, P.A. Fischer, D. M. Strom, E. Charles, M. H. Schune, C. Hearty, D. J. Summers, F. Pastore, A. Perazzo, M. Milek, C. Voena, F. Martinez-Vidal, Salnikov Aa, Corrado Angelini, Ingrid U. Scott, A. Smol, Gopal Gp, Nicolo De Groot, A. Khan, C. Bozzi, G. Cowan, Forti Ac, B. A. Schumm, Jochen Schieck, Lutz Am, A. Buzzo, R. J. Barlow, Sercan Sen, N. Chevalier, M. Posocco, J. H. Von, and V. B. Golubev

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, Charge (physics), 01 natural sciences, B-factory, Crystallography, Particle decay, 0103 physical sciences, Pi, CP violation, 010306 general physics
Abstract

We present a measurement of the time-dependent CP-violating asymmetries in neutral B decays to the {pi}{sup +}{pi}{sup -} CP eigenstate, and an updated measurement of the charge asymmetry in B{sup 0} {yields} K{sup +} {pi}{sup -} decays. In a sample of 33 million {Upsilon}(4S) {yields} B{bar B} decays collected with the BABAR detector at the SLAC PEP-II asymmetric B Factory, we find 65{sub -11}{sup +12} {pi}{sup +} {pi}{sup -} and 217 {+-} 18 K{sup +}{pi}{sup -} candidates and measure the asymmetry parameters S{sub {pi}{pi}} = 0.03{sub -0.56}{sup +0.53} {+-} 0.11, C{sub {pi}{pi}} = -0.25{sub -0.47}{sup +0.45} {+-} 0.14, and {Alpha}{sub K{pi}} = -0.07 {+-} 0.08 {+-} 0.02, where the first error is statistical and the second is systematic.

Published
2002
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