Search

Your search keyword '"Fujino D"' showing total 612 results
Start Over Author "Fujino D"

Refine your results

more »

more »

more »

more »
612 results on '"Fujino D"'

1. Study of gluon versus quark fragmentation in Υ→ggγ and e+e-→qq¯γ events at s=10 GeV

Author

Alam, MS, Athar, SB, Ling, Z, Mahmood, AH, Severini, H, Timm, S, Wappler, F, Anastassov, A, Blinov, S, Duboscq, JE, Fujino, D, Fulton, R, Gan, KK, Hart, T, Honscheid, K, Kagan, H, Kass, R, Lee, J, Spencer, MB, Sung, M, Undrus, A, Wanke, R, Wolf, A, Zoeller, MM, Nemati, B, Richichi, SJ, Ross, WR, Skubic, P, Wood, M, Bishai, M, Fast, J, Gerndt, E, Hinson, JW, Menon, N, Miller, DH, Shibata, EI, Shipsey, IPJ, Yurko, M, Gibbons, L, Johnson, SD, Kwon, Y, Roberts, S, Thorndike, EH, Jessop, CP, Lingel, K, Marsiske, H, Perl, ML, Schaffner, SF, Ugolini, D, Wang, R, Zhou, X, Coan, TE, Fadeyev, V, Korolkov, I, Maravin, Y, Narsky, I, Shelkov, V, Staeck, J, Stroynowski, R, Volobouev, I, Ye, J, Artuso, M, Efimov, A, Frasconi, F, Gao, M, Goldberg, M, He, D, Kopp, S, Moneti, GC, Mountain, R, Mukhin, Y, Schuh, S, Skwarnicki, T, Stone, S, Viehhauser, G, Xing, X, Bartelt, J, Csorna, SE, Jain, V, Marka, S, Freyberger, A, Gibaut, D, Godang, R, Kinoshita, K, Lai, IC, Pomianowski, P, Schrenk, S, Bonvicini, G, Cinabro, D, Greene, R, Perera, LP, Barish, B, Chadha, M, Chan, S, Eigen, G, Miller, JS, Grady, C O’, Schmidtler, M, Urheim, J, and Weinstein, AJ

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

Using data collected with the CLEO II detector at the Cornell Electron Storage Ring, we determine the ratio [Formula presented] for the mean charged multiplicity observed in [Formula presented] events, [Formula presented], to the mean charged multiplicity observed in [Formula presented] events, [Formula presented]. We find [Formula presented] [Formula presented] for jet-jet masses less than 7 GeV. © 1997 The American Physical Society.

Published
1997

2. Study of gluon versus quark fragmentation in [Formula presented] and [Formula presented] events at [Formula presented]=10 GeV

Author

Alam, MS, Athar, SB, Ling, Z, Mahmood, AH, Severini, H, Timm, S, Wappler, F, Anastassov, A, Blinov, S, Duboscq, JE, Fujino, D, Fulton, R, Gan, KK, Hart, T, Honscheid, K, Kagan, H, Kass, R, Lee, J, Spencer, MB, Sung, M, Undrus, A, Wanke, R, Wolf, A, Zoeller, MM, Nemati, B, Richichi, SJ, Ross, WR, Skubic, P, Wood, M, Bishai, M, Fast, J, Gerndt, E, Hinson, JW, Menon, N, Miller, DH, Shibata, EI, Shipsey, IPJ, Yurko, M, Gibbons, L, Johnson, SD, Kwon, Y, Roberts, S, Thorndike, EH, Jessop, CP, Lingel, K, Marsiske, H, Perl, ML, Schaffner, SF, Ugolini, D, Wang, R, Zhou, X, Coan, TE, Fadeyev, V, Korolkov, I, Maravin, Y, Narsky, I, Shelkov, V, Staeck, J, Stroynowski, R, Volobouev, I, Ye, J, Artuso, M, Efimov, A, Frasconi, F, Gao, M, Goldberg, M, He, D, Kopp, S, Moneti, GC, Mountain, R, Mukhin, Y, Schuh, S, Skwarnicki, T, Stone, S, Viehhauser, G, Xing, X, Bartelt, J, Csorna, SE, Jain, V, Marka, S, Freyberger, A, Gibaut, D, Godang, R, Kinoshita, K, Lai, IC, Pomianowski, P, Schrenk, S, Bonvicini, G, Cinabro, D, Greene, R, Perera, LP, Barish, B, Chadha, M, Chan, S, Eigen, G, Miller, JS, Grady, CO, Schmidtler, M, Urheim, J, and Weinstein, AJ

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

Using data collected with the CLEO II detector at the Cornell Electron Storage Ring, we determine the ratio [Formula presented] for the mean charged multiplicity observed in [Formula presented] events, [Formula presented], to the mean charged multiplicity observed in [Formula presented] events, [Formula presented]. We find [Formula presented] [Formula presented] for jet-jet masses less than 7 GeV. © 1997 The American Physical Society.

Published
1997

3. Measurement of the D→ππ branching fractions

Author

Selen, M, Sadoff, AJ, Ammar, R, Ball, S, Baringer, P, Coppage, D, Copty, N, Davis, R, Hancock, N, Kelly, M, Kwak, N, Lam, H, Kubota, Y, Lattery, M, Nelson, JK, Patton, S, Perticone, D, Poling, R, Savinov, V, Schrenk, S, Wang, R, Alam, MS, Kim, IJ, Nemati, B, O’Neill, JJ, Severini, H, Sun, CR, Zoeller, MM, Crawford, G, Daubenmeir, CM, Fulton, R, Fujino, D, Gan, KK, Honscheid, K, Kagan, H, Kass, R, Lee, J, Malchow, R, Morrow, F, Skovpen, Y, Sung, M, White, C, Whitmore, J, Wilson, P, Butler, F, Fu, X, Kalbfleisch, G, Lambrecht, M, Ross, WR, Skubic, P, Snow, J, Wang, PL, Wood, M, Bortoletto, D, Brown, DN, Fast, J, McIlwain, RL, Miao, T, Miller, DH, Modesitt, M, Schaffner, SF, Shibata, EI, Shipsey, IPJ, Wang, PN, Battle, M, Ernst, J, Kroha, H, Roberts, S, Sparks, K, Thorndike, EH, Wang, CH, Dominick, J, Sanghera, S, Skwarnicki, T, Stroynowski, R, Artuso, M, He, D, Goldberg, M, Horwitz, N, Kennett, R, Moneti, GC, Muheim, F, Mukhin, Y, Playfer, S, Rozen, Y, Stone, S, Thulasidas, M, Vasseur, G, Zhu, G, Bartelt, J, Csorna, SE, Egyed, Z, Jain, V, Sheldon, P, Akerib, DS, Barish, B, Chadha, M, Chan, S, Cowen, DF, and Eigen, G

Subjects
Mathematical Physics, Particle and High Energy Physics, Mathematical Sciences, Physical Sciences, BABAR Collaboration, hep-ex, Engineering, General Physics, Mathematical sciences, Physical sciences
Abstract

We present a measurement of the branching fraction for the decay of the neutral B meson into the final state J/psipi(+)pi(-). The data set contains approximately 56 x 10(6) BB pairs produced at the Upsilon(4S) resonance and recorded with the BABAR detector at the PEP-II asymmetric-energy e(+)e(-) storage ring. The result of this analysis is B(B0-->J/psipi(+)pi(-))=(4.6+/-0.7+/-0.6) x 10(-5), where the first error is statistical and the second is systematic. In addition, we measure B(B0-->J/psirho(0))=(1.6+/-0.6+/-0.4) x 10(-5).

Published
1993

4. 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, Gomez Cadenas JJ, 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, and Kuhlen, M

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

5. 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

6. Measurement of the Charged Multiplicity of Events Containing Bottom Hadrons at E{sub c.m.}

Author

Schumm, B.A., Koetke, D.S., Adolphsen, C.E., Alexander, J.P., Averill, D., Barish, B.C., Barklow, T., Barnett, B.A., Blockus, D., Boyarski, A., Brabson, B., Breakstone, A., Bulos, F., Burchat, P.R., Burke, D.L., Cence, R.J., Chapman, J., Chmeissani, M., Cords, D., Coupal, D.P., Dauncey, P., DeStaebler, H.C., Dorfan, J.M., Drell, P.S., Drewer, D.C., Durrett, D., Elia, R., Feldman, G.J., Field, R.C., Ford, W.T., Fordham, C., Frey, R., Fujino, D., Gan, K.K., Gero, E., Gidal, G., Glanzman, T., Goldhaber, G., Gomez-Cadenas, J.J., Gratta, G., Hanson, G., Harr, R., Harral, B., Harris, F.A., Hayes, K., Hearty, C., Heusch, C.A., Hildreth, M.D., Himel, T., Hinshaw, D.A., Hong, S.J., Hutchinson, D., Hylen, J., Innes, W.R., Jacobsen, R.G., Jaros, J.A., Jung, C.K., Kadyk, J.A., Kenney, C., King, M., Komamiya, S., Kowalski, L.A., Kral, J.F., Kuhlen, M., Labarga, L., Lankford, A.J., Diberder, F.Le., Levi, M.E., Litke, A.M., Lou, X.C., Luth, V., McKenna, J.A., Matthews, J.A.J., Mattison, T., Moffeit, K.C., Munger, C.T., and Murray, W.

Published
1992

7. Measurement of the bb¯ fraction in hadronic Z0 decays with precision vertex detectors

Author

Jacobsen, RG, Koetke, DS, Adolphsen, CE, Fujino, D, Schumm, BA, Wagner, SR, 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, 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, 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, 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
Mathematical Sciences, Physical Sciences, Engineering, General Physics
Abstract

We have measured the fraction of bb» events in hadronic Z0 decays, Rbb», using the vertex detector system of the Mark II detector at the SLAC Linear Collider. We tag bb» events by requiring the coincidence of three or more tracks with significant impact parameters. This tag is 50% efficient and results in a sample of 85% purity. We find Rbb»=0.251+0.049+0.030, in good agreement with other measurements and the standard model prediction. © 1991 The American Physical Society.

Published
1991

8. Measurement of the bb-bar fraction in hadronic Z0 decays with precision vertex detectors.

Author

Jacobsen, RG, Koetke, DS, Adolphsen, CE, Fujino, D, Schumm, BA, Wagner, SR, 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, Gan, KK, Gero, E, Gidal, G, Glanzman, T, Goldhaber, G, Gomez Cadenas JJ, 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, Jaros, JA, Jung, CK, Kadyk, JA, Kenney, C, King, M, Komamiya, S, Kowalski, LA, and Kral, JF

Subjects
General Physics, Physical Sciences, Mathematical Sciences, Engineering
Abstract

We have measured the fraction of bb» events in hadronic Z0 decays, Rbb», using the vertex detector system of the Mark II detector at the SLAC Linear Collider. We tag bb» events by requiring the coincidence of three or more tracks with significant impact parameters. This tag is 50% efficient and results in a sample of 85% purity. We find Rbb»=0.251+0.049+0.030, in good agreement with other measurements and the standard model prediction. © 1991 The American Physical Society.

Published
1991

9. Measurement of the b{ovr b} Fraction in Hadronic Z{sup 0} Decays with Precision Vertex Detectors

Author

Jacobsen, R.G., Koetke, D.S., Adolphsen, C.E., Fujino, D., Schumm, B.A., Wagner, S.R., Alexander, J.P., Averill, D., Barish, B.C., Barklow, T., Barnett, B.A., Blockus, D., Boyarski, A., Brabson, B., Breakstone, A., Bulos, F., Burchat, P.R., Burke, D.L., Cence, R.J., Chapman, J., Chmeissani, M., Cords, D., Coupal, D.P., Dauncey, P., DeStaebler, H.C., Dorfan, J.M., Drell, P.S., Drewer, D.C., Durrett, D., Elia, R., Feldman, G.J., Field, R.C., Ford, W.T., Fordham, C., Frey, R., Gan, K.K., Gero, E., Gidal, G., Glanzman, T., Goldhaber, G., Gomez-Cadenas, J.J., Gratta, G., Hanson, G., Harr, R., Harral, B., Harris, F.A., Hayes, K., Hearty, C., Heusch, C.A., Hildreth, M.D., Himel, T., Hinshaw, D.A., Hong, S.J., Hutchinson, D., Hylen, J., Innes, W.R., Jaros, J.A., Jung, C.K., Kadyk, J.A., Kenney, C., King, M., Komamiya, S., Kowalski, L.A., Kral, J.F., Kuhlen, M., Labarga, L., Lankford, A.J., Diberder, F. Le, Levi, M.E., Litke, A., Lou, X.C., and Luth, V.

Published
1991

10. Search for elastic nondiagonal lepton-pair production in e+e- annihilation at √s =29 GeV

Author

Gomez-Cadenas, JJ, Heusch, CA, 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, 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, Petersen, A, Petradza, M, Porter, FC, Rankin, P, and Richter, B

Subjects
Mathematical Sciences, Physical Sciences, Engineering, General Physics
Abstract

We have searched for the annihilation of e+e- into the exclusive channels e and at s =29 GeV, using 226 and 133 pb-1, respectively, of data taken with the Mark II detector at the SLAC storage ring PEP. The resulting candidate sample is compatible with the expected background from pair production. Our analysis yields 95%-C.L. cross-section limits of e/

Published
1991

11. Search for elastic nondiagonal lepton-pair production in e+e- annihilation at sqrt s =29 GeV.

Author

Gomez-Cadenas, JJ, Heusch, CA, 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, Himel, T, Hoenk, M, Hollebeek, RJ, Hutchinson, D, Hylen, J, Innes, WR, and Jaffre, M

Subjects
General Physics, Physical Sciences
Abstract

We have searched for the annihilation of e+e- into the exclusive channels e and at s =29 GeV, using 226 and 133 pb-1, respectively, of data taken with the Mark II detector at the SLAC storage ring PEP. The resulting candidate sample is compatible with the expected background from pair production. Our analysis yields 95%-C.L. cross-section limits of e/

Published
1991

12. Measurement of the total hadronic cross section in e+e- annihilation at sqrt 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, and Hutchinson, D

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

13. 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

14. Direct search for pair production of heavy stable charged particles in Z decays

Author

Soderstrom, E, McKenna, JA, 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, Burchat, PR, 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, 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, King, M, 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, 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, Petradza, M, Pitthan, R, Porter, FC, Rankin, P, Riles, K, and Rouse, FR

Subjects
Mathematical Sciences, Physical Sciences, Engineering, General Physics
Abstract

A search for pair production of stable charged particles from Z decay has been performed with the Mark II detector at the SLAC Linear Collider. Particle masses are determined from momentum, ionization energy loss, and time-of-flight measurements. A limit excluding pair production of stable fourth-generation charged leptons and stable mirror fermions with masses between the muon mass and 36.3 GeV/c2 is set at the 95% confidence level. Pair production of stable supersymmetric scalar leptons with masses between the muon mass and 32.6 GeV/c2 is also excluded. © 1990 The American Physical Society.

Published
1990

15. Searches for supersymmetric particles produced in Z-boson decay

Author

Barklow, T, Abrams, GS, Adolphsen, CE, Averill, D, Ballam, J, Barish, BC, Barnett, BA, Bartelt, J, Bethke, S, Blockus, D, Bonvicini, G, 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, 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, King, M, 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, Petradza, M, Pitthan, R, Porter, FC, Rankin, P, Riles, K, and Rouse, FR

Subjects
Mathematical Sciences, Physical Sciences, Engineering, General Physics
Abstract

We have searched for supersymmetric particles in 528 Z decays with the Mark II detector at the SLAC Linear Collider. We place 95%-confidence-level lower mass limits on degenerate squarks, nondegenerate up-type squarks, nondegenerate down-type squarks, charginos, pair-produced unstable neutralinos, and neutralinos from associated production. © 1990 The American Physical Society.

Published
1990

16. Search for Nonminimal Neutral Bosons from Z-Boson Decays

Author

Komamiya, S., Abrams, G.S., Adolphsen, C.E., Averill, D., Ballam, J., Barish, B.C., Barklow, T., Barnett, B.A., Bartlett, J.G., Bethke, S., Blockus, D., Bonvicini, G., Boyarski, A., Brabson, B., Breakstone, A., Bulos, F., Burchat, P.R., Burke, D.L., Cence, R.J., Chapman, J., Chmeissani, M., Cords, D., Coupal, D.P., Dauncey, P., DeStaebler, H.C., Dorfan, D.E., Fordham, J.M., Frey, R., Fujino, D., Gan, K.K., Gatto, C., Gero, E., Gidal, G., Glanzman, T., Goldhaber, G., Gomez-Cadenas, J.J., Gratta, G., Grindhammer, G., Grosse-Wiesmann, P., Hanson, G., Harr, R., Harral, B., Harris, F.A., Hawkes, C.M., Hayes, K., Hearty, C., Heusch, C.A., Hildreth, M.D., Himel, T., Hinshaw, D.A., Hong, S.J., Hutchinson, D., Hylen, J., Innes, W.R., Jacobsen, R.G., Jaros, J.A., Jung, C.K., Kadyk, J.A., Kent, J., King, M., Klein, R., Koetke, D.S., Koska, W., Kowalski, L.A., Kozanecki, W., Kral, J.F., Kuhlen, M., Labarga, L., Lankford, A.J., Larsen, R.R., Diberder, F. Le, Levi, M.E., Litke, A.M., Lou, X.C., Luth, V., McKenna, J.A., and Matthews, J.A.J.

Published
1990

17. Search for nonminimal neutral Higgs bosons from Z-boson decays

Author

Komamiya, S, 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, Burchat, PR, 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, King, M, Klein, SR, Koetke, DS, 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
Mathematical Sciences, Physical Sciences, Engineering, General Physics
Abstract

Using the Mark II detector at the SLAC Linear Collider, we search for decays of the Z boson to a pair of nonminimal Higgs bosons (ZHs0Hp0), where one of them is relatively light (10 GeV). We find no evidence for these decays and we obtain limits on the ZHs0Hp0 coupling as a function of the Higgs-boson masses. © 1990 The American Physical Society.

Published
1990

18. Search for doubly charged Higgs scalars in Z decay

Author

Swartz, 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, Burchat, PR, 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, King, M, 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, and Porter, FC

Subjects
Mathematical Sciences, Physical Sciences, Engineering, General Physics
Abstract

We describe a search for the decay of the Z boson into pairs of doubly charged Higgs bosons with the Mark II detector operating at the SLAC Linear Collider. Each Higgs boson is assumed to decay into a same-sign leptonic pair. No event candidates are found in a sample of 528 Z decays. At the 95% confidence level, this result excludes the region of leptonic coupling gll3×10-7 and Higgs-boson mass 6.5MH 36.5 GeV/c2 for isotriplet (left-handed) Higgs bosons. Isosinglet (right-handed) Higgs bosons are excluded in the same gll interval and in the mass interval 7.3 MH 34.3 GeV/c2. © 1990 The American Physical Society.

Published
1990

19. 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, Gomez Cadenas JJ, 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, and Jung, CK

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

20. A reanalysis of B0-B̄0 mixing in e+e- annihilation at 29 GeV

Author

Weir, AJ, Abrams, G, Adolphsen, CE, Alexander, JP, Alvarez, M, Amidei, D, Baden, AR, Barish, BC, Barklow, T, Barnett, BA, Bartelt, I, 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, Hylef, J, Innes, WR, Jaffre, M, Jaros, JA, Juricic, I, Kadyk, JA, Karlen, D, Kent, J, Klein, SR, 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, Perl, ML, Petersen, A, Petradza, M, Porter, FC, Rankin, P, Richter, B, Riles, K, Rowson, PC, Rust, DR, Sadrozinski, HFW, Schaad, T, and Schalk, TL

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

Data taken by the Mark II detector at the PEP storage ring was used to measure the rate of dilepton production in multihadronic events produced by e+e- annihilation at √s=29 GeV. We determine the probability that a hadron initially containing a b (b̄) quark decays to a positive (negative) lepton to be 0.17-0.08+0.15, with 90% confidence level limits of 0.06 and 0.38. © 1990.

Published
1990

21. Measurements of charged-particle inclusive distributions in hadronic decays of the Z boson

Author

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, Burchat, PR, 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, 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, King, M, 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, Petersen, A, Petradza, M, Pitthan, R, Porter, FC, and Rankin, P

Subjects
Mathematical Sciences, Physical Sciences, Engineering, General Physics
Abstract

We have measured inclusive distributions for charged particles in hadronic decays of the Z boson. The variables chosen for study were charged-particle multiplicity, scaled momentum, and momenta transverse to the sphericity axes. The distributions have been corrected for detector effects and are compared with data from ee- annihilation at lower energies and with the predictions of several QCD-based models. The data are in reasonable agreement with expectations. © 1990 The American Physical Society.

Published
1990

22. Measurement of the bb¯ fraction in hadronic Z decays

Author

Kral, JF, 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, Burchat, PR, 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, King, M, Klein, SR, Koetke, DS, Komamiya, S, Koska, W, Kowalski, LA, Kozanecki, W, 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, Petradza, M, Pitthan, R, Porter, FC, Rankin, P, and Riles, K

Subjects
Mathematical Sciences, Physical Sciences, Engineering, General Physics
Abstract

Using isolated leptons reconstructed in the Mark II detector to tag bb events, we measure the fraction of bb events in hadronic Z0 decays to be 0.23-0.09+0.11, in good agreement with the standard-model prediction of 0.22. We find (Zbb)=0.43-0.17+0.21 GeV. © 1990 The American Physical Society.

Published
1990

23. Search for long-lived massive neutrinos in Z decays

Author

Jung, CK, Van Kooten, R, 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, Burchat, PR, 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, Kadyk, JA, Kent, J, King, M, 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, and Porter, FC

Subjects
Mathematical Sciences, Physical Sciences, Engineering, General Physics
Abstract

We search for events in the Mark II detector at SLAC Linear Collider with the topology of a Z boson decaying into a pair of long-lived massive particles. No events that are consistent with the search hypothesis are found. Interpreting the long-lived particle as a sequential Dirac neutrino 4 of the fourth generation, we exclude at the 95% confidence level a significant range of mixing-matrix elements of 4 to other-generation neutrinos for a 4 mass from 10 to 43 GeV/c2. © 1990 The American Physical Society.

Published
1990

24. Measurement of the B0-meson lifetime.

Author

Wagner, SR, Hinshaw, DA, Ong, RA, Snyder, 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, 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, and Innes, WR

Subjects
General Physics, Mathematical Sciences, Physical Sciences, Engineering
Abstract

We report a measurement of the lifetime of the B0 meson based upon 29-GeV e+e- annihilation data taken with the Mark II detector at the SLAC storage ring PEP. The B0 mesons are tagged by their decays into D*- and D*+, where the D*- is tagged by its decay into -D 0. We reconstruct the decay vertices of 15 B0-meson candidates and measure the B0 lifetime to be 1.20-0.360.14+0.52+0.16 psec. © 1990 The American Physical Society.

Published
1990

25. Upper limits on D+/- and B+/- decays to two leptons plus pi +/- 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, and Jaros, JA

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

26. 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

27. Measurement of the bb-bar fraction in hadronic Z decays.

Author

Kral, JF, 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, Burchat, PR, 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, Gomez Cadenas JJ, 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, and Jung, CK

Subjects
General Physics, Physical Sciences, Mathematical Sciences, Engineering
Abstract

Using isolated leptons reconstructed in the Mark II detector to tag bb events, we measure the fraction of bb events in hadronic Z0 decays to be 0.23-0.09+0.11, in good agreement with the standard-model prediction of 0.22. We find (Zbb)=0.43-0.17+0.21 GeV. © 1990 The American Physical Society.

Published
1990

28. Determination of αs from a differential-jet-multiplicity distribution in e+e- collisions at √s =29 and 91 GeV

Author

Komamiya, S, Le Diberder, F, 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, Burchat, PR, 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, King, M, Klein, SR, Koetke, DS, Koska, W, Kowalski, LA, Kozanecki, W, Kral, JF, Kuhlen, M, Labarga, L, Lankford, AJ, Larsen, RR, 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
Mathematical Sciences, Physical Sciences, Engineering, General Physics
Abstract

We measured the differential jet-multiplicity distribution in e+e- annihilation with the Mark II detector. This distribution is compared with the second-order QCD prediction and s is determined to be 0.1230.0090.005 at ssSMZ (at the SLAC Linear Collider) and 0.1490.0020.007 at ss=29 GeV (at the SLAC storage ring PEP). The running of s between these two center-of-mass energies is consistent with the QCD prediction. © 1990 The American Physical Society.

Published
1990

29. A Search for Decays of the Z to Unstable Neutral Leptons with Mass between 2.5 and 22 GeV

Author

Burchat, P.R., King, M., Abrams, G.S., Adolphsen, C.E., Averill, D., Ballam, J., Barish, B.C., Barklow, T., Barnett, B.A., Bartelt, J., Bethke, S., Blockus, D., Bonvicini, G., Boyarski, A., Brabson, B., Breakstone, A., Bulos, F., Burke, D.L., Cence, R.J., Chapman, J., Chmeissani, M., Cords, D., Coupal, D.P., Dauncey, P., DeStaebler, H.C., Dorfan, D.E., Dorfan, J.M., Drewer, D.C., Elia, R., Feldman, G.J., Fernandes, D., Field, R.C., Ford, W.T., Fordham, C., Frey, R., Fujino, D., Gan, K.K., Gatto, C., Gero, E., Gidal, G., Glanzman, T., Goldhaber, G., Gomez-Cadenas, J.J., Gratta, G., Grindhammer, G., Grosse-Wiesmann, P., Hanson, G., Harr, R., Harral, B., Harris, F.A., Hawkes, C.M., Hayes, K., Hearty, C., Heusch, C.A., Hildreth, M.D., Himel, T., Hinshaw, D.A., Hong, S.J., Hutchinson, D., Hylen, J., Innes, W.R., Jacobsen, R.G., Jaros, J.A., Jung, C.K., Kadyk, J.A., Kent, J., Klein, S.R., Koetke, D.S., Komamiya, S., Koska, W., Kowalski, L.A., Kozanecki, W., Kral, J.F., Kuhlen, M., Labarga, L., Lankford, A.J., Larsen, R.R., Diberder, F. Le, Levi, M.E., Litke, A.M., Lou, X.C., Luth, V., McKenna, J.A., Matthews, J.A.J., Mattison, T., Milliken, B.D., Moffeit, K.C., Munger, C.T., Murray, W.N., Nash, J., Ogren, H., O'Shaughnessy, K.F., Parker, S.I., Peck, C., Perl, M.L., Perrier, F., Petradza, M., Pitthan, R., Porter, F.C., and Rankin, P.

Published
1990

30. Determination of alpha s from a differential-jet-multiplicity distribution in e+e- collisions at sqrt s =29 and 91 GeV.

Author

Komamiya, S, Le Diberder F, 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, Burchat, PR, 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, Gomez Cadenas JJ, 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, and Jaros, JA

Subjects
General Physics, Physical Sciences, Mathematical Sciences, Engineering
Abstract

We measured the differential jet-multiplicity distribution in e+e- annihilation with the Mark II detector. This distribution is compared with the second-order QCD prediction and s is determined to be 0.1230.0090.005 at ssSMZ (at the SLAC Linear Collider) and 0.1490.0020.007 at ss=29 GeV (at the SLAC storage ring PEP). The running of s between these two center-of-mass energies is consistent with the QCD prediction. © 1990 The American Physical Society.

Published
1990

31. Measurement of Z Decays into Lepton Pairs

Author

Abrams, G S, Adolphsen, C E, Averill, D, Ballam, J, Barish, B C, Barklow, T, Barnett, B A, Bartelt, J, Bethke, S, Blockus, D, Bonvicini, G, Boyarski, A, Brabson, B, Breakstone, A, Bulos, F, Burchat, P R, Burke, D L, Cence, R J, Chapman, J, Chmeissani, M, Cords, D, Coupal, D P, Dauncey, P, DeStaebler, H C, Dorfan, D E, Dorfan, J M, Drewer, D C, Elia, R, Feldman, G J, Fernandes, D, Field, R C, Ford, W T, Fordham, C, Frey, R, Fujino, D, Gan, K K, Gero, E, Gidal, G, Glanzman, T, Goldhaber, G, Cadenas, J J Gomez, Gratta, G, Grindhammer, G, Grosse-Wiesmann, P, Hanson, G, Harr, R, Harral, B, Harris, F A, Hawkes, C M, Hayes, K, Hearty, C, Heusch, C A, Hildreth, M D, Himel, T, Hinshaw, D A, Hong, S J, Hutchinson, D, Hylen, J, Innes, W R, Jacobsen, R G, Jaros, J A, Jung, C K, Kadyk, J A, Kent, J, King, M, Klein, S R, Koetke, D S, Komamiya, S, Koska, W, Kowalski, L A, Kozanecki, W, Kral, J F, Kuhlen, M, Labarga, L, Lankford, A J, Larsen, R R, Le Diberder, F, Levi, M E, Litke, A M, Lou, X C, Lüth, V, McKenna, J A, Matthews, J A J, Mattison, T, Milliken, B D, Moffeit, K C, Munger, C T, Murray, W N, Nash, J, Ogren, H, O'Shaughnessy, K F, Parker, S I, Peck, C, Perl, M L, Perrier, F, Petradza, M, Pitthan, R, Porter, F C, Rankin, P, and Riles, K

Published
1989

32. First measurements of hadronic decays of the Z boson

Author

Abrams, GS, Adolphsen, CE, Aleksan, R, Alexander, JP, Averill, D, Ballam, J, Barish, BC, Barklow, T, Barnett, BA, Bartelt, J, Bethke, S, Blockus, D, de Boer, W, Bonvicini, G, Boyarski, A, Brabson, B, Breakstone, A, Brom, JM, Bulos, F, Burchat, PR, Burke, DL, Cence, RJ, Chapman, J, Chmeissani, M, Cords, D, Coupal, DP, Dauncey, P, DeStaebler, HC, Dorfan, DE, Dorfan, JM, Drell, PS, Drewer, DC, Elia, R, Fay, J, Feldman, GJ, Fernandes, D, 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, Grindhammer, G, Grosse-Wiesmann, P, Hanson, G, Harr, R, Harral, B, Harris, FA, Hawkes, CM, Hayes, K, Hearty, C, Herrup, D, Heusch, CA, Hildreth, MD, Himel, T, Hinshaw, DA, Holmgren, S-O, Hong, SJ, Hutchinson, D, Hylen, J, Innes, WR, Jacobsen, RG, Jaffre, M, Jaros, JA, Jung, CK, Kadyk, JA, Karlen, D, Kent, J, King, M, 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, Lüth, V, Lynch, GR, McKenna, JA, Matthews, JAJ, Mattison, T, Milliken, BD, Moffeit, KC, Munger, CT, Murray, WN, Nash, J, and Nitz, D

Subjects
Mathematical Sciences, Physical Sciences, Engineering, General Physics
Abstract

We have observed hadronic final states produced in the decays of Z bosons. In order to study the parton structure of these events, we compare the distributions in sphericity, thurst, aplanarity, and number of jets to the predictions of several QCD-based models and to data from lower energies. The data and models agree within the present statistical precision. © 1989 The American Physical Society.

Published
1989

33. Search for B-decay to Higgs bosons for Higgs boson masses between 50 and 210 MeV/c2

Author

Snyder, A, Murray, WN, Abrams, G, Adolphsen, CE, Akerlof, C, Alexander, JP, Alvarez, M, Amidel, D, Baden, AR, 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, 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, Klein, SR, 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, Perl, ML, Petersen, A, Petradza, M, Porter, FC, Rankin, P, Richter, B, Riles, K, Rowson, PC, Rust, DR, Sadrozinski, HFW, and Schaad, T

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

We use data from the Mark II experiment at PEP to search for the process B→h0X for mh0 between 50 and 210 MeV/c2. No evidence for the Higgs boson is seen in this mass range. The limit obtained rules out the standard Higgs boson for masses between 70 and 210 MeV/c2 and significantly constrains extensions of the Higgs sector. © 1989.

Published
1989

34. The Mark II detector for the SLC

Author

Abrams, G, Adolphsen, CE, Akerlof, C, Alexander, JP, Alvarez, M, Averill, D, Baden, AR, Ballam, J, Barish, BC, Barklow, T, Barnett, BA, Bartelt, J, Blockus, D, De Boer, W, Bonvicini, G, Boswell, C, Boyarski, A, Boyer, J, Brabson, B, Braune, K, Breakstone, A, Brom, JM, Bulos, F, Burchat, PR, Burke, DL, Butler, F, Calvino, F, Cence, RJ, Chapman, J, Chmeissani, M, Cords, D, Coupal, DP, Dauncey, P, Destaebler, HC, Dorfan, DE, Dorfan, JM, Drell, PS, Drewer, DC, Fay, J, Feldman, GJ, Fernandes, D, Fernandez, E, 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, Gong, X, Gratta, G, Green, A, Grosse-Wiesmann, P, Haggerty, J, Hanson, G, Harr, R, Harral, B, Harris, FA, Hawkes, CM, Hayes, K, Hearty, C, Herrup, D, Heusch, CA, Himel, T, Hinshaw, DA, Hoenk, M, Holmgren, S-O, Hong, SJ, Hutchinson, D, Hylen, J, Innes, WR, Jacobsen, RG, Jaffre, M, Jaros, JA, Jung, CK, Juricic, I, Kadyk, JA, Karlen, D, Kent, J, King, M, Klein, SR, Koepke, L, Koetke, D, Koide, A, Komamiya, S, Koska, W, Kowalski, LA, Kozanecki, W, Kral, JF, Kuhlen, M, Labarga, L, Lankford, AJ, Larsen, RR, Levi, ME, and Li, Z

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

The Mark II detector has been upgraded in preparation for its role as the first detector to take data at the Stanford Linear Collider. The new detector components include the central drift chamber, the time-of-flight system, the coil, the endcap electromagnetic calorimeters and the beam energy and luminosity measuring devices. There have also been improvements in detector hermeticity. All of the major components were installed for a test run at the PEP storage ring (√s = 29 GeV) in 1985. This paper describes the upgraded detector, including its trigger and data acquisition systems, and gives performance figures for its components. Future improvements are also discussed. © 1989.

Published
1989

35. Determination of alpha s 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, and Innes, WR

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

36. Studies of jet production rates ine+e− annihilation atEcm=29 GeV

Author

Bethke, S, 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, Bullos, 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, F, 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, Hylen, J, Innes, WR, Jaffre, M, Jaros, JA, Juricic, I, Kadyk, JA, Karlen, D, Kent, J, Klein, SR, Komamiya, S, Koska, W, Kozanecki, W, Lankford, AJ, Larsen, RR, Levi, ME, Li, Z, Litke, AM, Lüth, V, Matthews, JAJ, Meyer, DI, Milliken, BD, Moffeit, KC, Müller, L, Nash, J, Nelson, ME, Nitz, D, Ogren, H, O'Shaughnessy, KF, Parker, SI, Peck, C, Petersen, A, Petradza, M, Porter, FC, Rankin, P, Riles, K, Rust, DR, Sadrozinski, HFW, Schalk, TL, Schmidke, WB, Schwarz, AS, Seiden, A, Smith, JG, Snyder, A, and Soderstrom, E

Subjects
Nuclear & Particles Physics
Abstract

Production rates of multijet hadronic final states are studied in e+e- annihilation at 29 GeV center of mass energy. QCD shower model calculations with exact first order matrix element weighting at the first gluon vertex are capable of reproducing the observed multijet event rates over a large range of jet pair masses. The method used to reconstruct jets is well suited for directly comparing experimental jet rates with parton rates calculated in perturbative QCD. Evidence for the energy dependene of αs is obtained by comparing the observed production rates of 3-jet events with results of similar studies performed at higher center of mass energies. © 1989 Springer-Verlag.

Published
1989

37. 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

38. Measurements of Z-boson resonance parameters in e+e- annihilation.

Author

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, Brom, JM, Bulos, F, Burchat, PR, 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, Gero, E, Gidal, G, Glanzman, T, Goldhaber, G, Gomez Cadenas JJ, 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, and Kadyk, JA

Subjects
General Physics, Physical Sciences, Mathematical Sciences, Engineering
Abstract

We have measured the mass of the Z boson to be 91.14±0.12 GeV/c2, and its width to be 2.42-0.35+0.45 GeV. If we constrain the visible width to its standard-model value, we find the partial width to invisible decay modes to be 0.46±0.10 GeV, corresponding to 2.8±0.6 neutrino species, with a 95%-confidence-level upper limit of 3.9. © 1989 The American Physical Society.

Published
1989

39. Searches for new quarks and leptons produced in Z-boson decay.

Author

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, Burchat, PR, 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, Gero, E, Gidal, G, Glanzman, T, Goldhaber, G, Gomez Cadenas JJ, 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, and Kent, J

Subjects
General Physics, Physical Sciences, Mathematical Sciences, Engineering
Abstract

We have searched for events with new-particle topologies in 390 hadronic Z decays with the Mark II detector at the SLAC Linear Collider. We place 95%-confidence-level lower limits of 40.7 GeV/c2 for the top-quark mass, 42.0 GeV/c2 for the mass of a fourth-generation charge -(1/3 quark, and 41.3 GeV/c2 for the mass of an unstable Dirac neutral lepton. © 1989 The American Physical Society.

Published
1989

40. Initial measurements of Z-boson resonance parameters in e+e- annihilation.

Author

Abrams, GS, Adolphsen, CE, Aleksan, R, Alexander, JP, Allen, MA, Atwood, WB, Averill, D, Ballam, J, Bambade, P, Barish, BC, Barklow, T, Barnett, BA, Bartelt, J, Bethke, S, Blockus, D, de Boer W, Bonvicini, G, Boyarski, A, Brabson, B, Breakstone, A, Breidenbach, M, Brom, JM, Brown, JL, Brown, KL, Bulos, F, Burchat, PR, Burke, DL, Cence, RJ, Chapman, J, Chmeissani, M, Clendenin, J, Cords, D, Coupal, DP, Dauncey, P, Dean, NR, DeStaebler, HC, Dorfan, DE, Dorfan, JM, Drell, PS, Drewer, DC, Dydak, F, Ecklund, S, Elia, R, Erickson, RA, Fay, J, Feldman, GJ, Fernandes, D, Field, RC, Fieguth, TH, Fischer, GE, Ford, WT, Fordham, C, Frey, R, Fujino, D, Gan, KK, Gatto, C, Gero, E, Gidal, G, Glanzman, T, Goldhaber, G, Gomez Cadenas JJ, Gratta, G, Grindhammer, G, and Grosse-Wiesmann, P

Subjects
General Physics, Physical Sciences, Mathematical Sciences, Engineering
Abstract

We have measured the mass of the Z boson to be 91.110.23 GeV/c2, and its width to be 1.61-0.43+0.60 GeV. If we constrain the visible width to its standard-model value, we find the partial width to invisible decay modes to be 0.620.23 GeV, corresponding to 3.81.4 neutrino species. © 1989 The American Physical Society.

Published
1989

41. 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

42. Measurement of Z decays into lepton pairs

Author

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, Burchat, PR, 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, 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, King, M, 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, Rankin, P, and Riles, K

Subjects
Mathematical Sciences, Physical Sciences, Engineering, General Physics
Abstract

We present measurements by the Mark II experiment of the ratios of the leptonic partial widths of the Z boson to the hadronic partial width. The results are ee/had=0.037-0.012+0.016, &=0.053-0.0150.020, and /had=0.066-0.017+0.021, in good agreement with the standard-model prediction of 0.048. From the average leptonic width result, ll/had=0.053-0.009+0.010, we derive had=1.56-0.24+0.28 GeV. We find for the vector coupling constants of the tau and muon v2=0.310.31-0.30+0.43 and v2=0.050.30-0.23+0.34. © 1989 The American Physical Society.

Published
1989

43. Studies of jet production rates in e+e- annihilation at Ecm=29 GeV

Author

Bethke, S, 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, Bullos, 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, F, 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, Hylen, J, Innes, WR, Jaffre, M, Jaros, JA, Juricic, I, Kadyk, JA, Karlen, D, Kent, J, Klein, SR, Komamiya, S, Koska, W, Kozanecki, W, Lankford, AJ, Larsen, RR, Levi, ME, Li, Z, Litke, AM, Lüth, V, Matthews, JAJ, Meyer, DI, Milliken, BD, Moffeit, KC, Müller, L, Nash, J, Nelson, ME, Nitz, D, Ogren, H, O'Shaughnessy, KF, Parker, SI, Peck, C, Petersen, A, Petradza, M, Porter, FC, Rankin, P, Riles, K, Rust, DR, Sadrozinski, HFW, Schalk, TL, Schmidke, WB, Schwarz, AS, Seiden, A, Smith, JG, Snyder, A, and Soderstrom, E

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

Production rates of multijet hadronic final states are studied in e+e- annihilation at 29 GeV center of mass energy. QCD shower model calculations with exact first order matrix element weighting at the first gluon vertex are capable of reproducing the observed multijet event rates over a large range of jet pair masses. The method used to reconstruct jets is well suited for directly comparing experimental jet rates with parton rates calculated in perturbative QCD. Evidence for the energy dependene of αs is obtained by comparing the observed production rates of 3-jet events with results of similar studies performed at higher center of mass energies. © 1989 Springer-Verlag.

Published
1989

45. The B AB AR detector

Author

Aubert, B., Bazan, A., Boucham, A., Boutigny, D., De Bonis, I., Favier, J., Gaillard, J.-M., Jeremie, A., Karyotakis, Y., Le Flour, T., Lees, J.P., Lieunard, S., Petitpas, P., Robbe, P., Tisserand, V., Zachariadou, K., Palano, A., Chen, G.P., Chen, J.C., Qi, N.D., Rong, G., Wang, P., Zhu, Y.S., Eigen, G., Reinertsen, P.L., Stugu, B., Abbott, B., Abrams, G.S., Amerman, L., Borgland, A.W., Breon, A.B., Brown, D.N., Button-Shafer, J., Clark, A.R., Dardin, S., Day, C., Dow, S.F., Fan, Q., Gaponenko, I., Gill, M.S., Goozen, F.R., Gowdy, S.J., Gritsan, A., Groysman, Y., Hernikl, C., Jacobsen, R.G., Jared, R.C., Kadel, R.W., Kadyk, J., Karcher, A., Kerth, L.T., Kipnis, I., Kluth, S., Kral, J.F., Lafever, R., LeClerc, C., Levi, M.E., Lewis, S.A., Lionberger, C., Liu, T., Long, M., Luo, L., Lynch, G., Luft, P., Mandelli, E., Marino, M., Marks, K., Matuk, C., Meyer, A.B., Minor, R., Mokhtarani, A., Momayezi, M., Nyman, M., Oddone, P.J., Ohnemus, J., Oshatz, D., Patton, S., Pedrali-Noy, M., Perazzo, A., Peters, C., Pope, W., Pripstein, M., Quarrie, D.R., Rasson, J.E., Roe, N.A., Romosan, A., Ronan, M.T., Shelkov, V.G., Stone, R., Strother, P.D., Telnov, A.V., von der Lippe, H., Weber, T.F., Wenzel, W.A., Zizka, G., Bright-Thomas, P.G., Hawkes, C.M., Kirk, A., Knowles, D.J., O'Neale, S.W., Watson, A.T., Watson, N.K., Deppermann, T., Koch, H., Krug, J., Kunze, M., Lewandowski, B., Peters, K., Schmuecker, H., Steinke, M., Andress, J.C., Barlow, N.R., Bhimji, W., Chevalier, N., Clark, P.J., Cottingham, W.N., De Groot, N., Dyce, N., Foster, B., Mass, A., McFall, J.D., Wallom, D., Wilson, F.F., Abe, K., Hearty, C., McKenna, J.A., Thiessen, D., Camanzi, B., Harrison, T.J., McKemey, A.K., Tinslay, J., Antohin, E.I., Blinov, V.E., Bukin, A.D., Bukin, D.A., Buzykaev, A.R., Dubrovin, M.S., Golubev, V.B., Ivanchenko, V.N., Kolachev, G.M., Korol, A.A., Kravchenko, E.A., Mikhailov, S.F., Onuchin, A.P., Salnikov, A.A., Serednyakov, S.I., Skovpen, Yu.I., Telnov, V.I., Yushkov, A.N., Booth, J., Lankford, A.J., Mandelkern, M., Pier, S., Stoker, D.P., Zioulas, G., Ahsan, A., Arisaka, K., Buchanan, C., Chun, S., Faccini, R., MacFarlane, D.B., Prell, S.A., Rahatlou, Sh., Raven, G., Sharma, V., Burke, S., Callahan, D., Campagnari, C., Dahmes, B., Hale, D., Hart, P.A., Kuznetsova, N., Kyre, S., Levy, S.L., Long, O., Lu, A., May, J., Richman, J.D., Verkerke, W., Witherell, M., Yellin, S., Beringer, J., DeWitt, J., Dorfan, D.E., Eisner, A.M., Frey, A., Grillo, A.A., Grothe, M., Heusch, C.A., Johnson, R.P., Kroeger, W., Lockman, W.S., Pulliam, T., Rowe, W., Sadrozinski, H., Schalk, T., Schmitz, R.E., Schumm, B.A., Seiden, A., Spencer, E.N., Turri, M., Walkowiak, W., Wilder, M., Williams, D.C., Chen, E., Dubois-Felsmann, G.P., Dvoretskii, A., Hanson, J.E., Hitlin, D.G., Kolomensky, Yu.G., Metzler, S., Oyang, J., Porter, F.C., Ryd, A., Samuel, A., Weaver, M., Yang, S., Zhu, R.Y., Devmal, S., Geld, T.L., Jayatilleke, S., Jayatilleke, S.M., Mancinelli, G., Meadows, B.T., Sokoloff, M.D., Bloom, P., Broomer, B., Erdos, E., Fahey, S., Ford, W.T., Gaede, F., van Hoek, W.C., Johnson, D.R., Michael, A.K., Nauenberg, U., Olivas, A., Park, H., Rankin, P., Roy, J., Sen, S., Smith, J.G., Wagner, D.L., Blouw, J., Harton, J.L., Krishnamurthy, M., Soffer, A., Toki, W.H., Warner, D.W., Wilson, R.J., Zhang, J., Brandt, T., Brose, J., Dahlinger, G., Dickopp, M., Dubitzky, R.S., Eckstein, P., Futterschneider, H., Kocian, M.L., Krause, R., Müller-Pfefferkorn, R., Schubert, K.R., Schwierz, R., Spaan, B., Wilden, L., Behr, L., Bernard, D., Bonneaud, G.R., Brochard, F., Cohen-Tanugi, J., Ferrag, S., Fouque, G., Gastaldi, F., Matricon, P., Mora de Freitas, P., Renard, C., Roussot, E., T'Jampens, S., Thiebaux, C., Vasileiadis, G., Verderi, M., Anjomshoaa, A., Bernet, R., Di Lodovico, F., Muheim, F., Playfer, S., Swain, J.E., Falbo, M., Bozzi, C., Dittongo, S., Folegani, M., Piemontese, L., Ramusino, A.C., Treadwell, E., Anulli, F., Baldini-Ferroli, R., Calcaterra, A., de Sangro, R., Falciai, D., Finocchiaro, G., Patteri, P., Peruzzi, I.M., Piccolo, M., Xie, Y., Zallo, A., Bagnasco, S., Buzzo, A., Contri, R., Crosetti, G., Fabbricatore, P., Farinon, S., Lo Vetere, M., Macri, M., Minutoli, S., Monge, M.R., Musenich, R., Pallavicini, M., Parodi, R., Passaggio, S., Pastore, F.C., Patrignani, C., Pia, M.G., Priano, C., Robutti, E., Santroni, A., Bartoldus, R., Dignan, T., Hamilton, R., Mallik, U., Cochran, J., Crawley, H.B., Fischer, P.A., Lamsa, J., McKay, R., Meyer, W.T., Rosenberg, E.I., Albert, J.N., Beigbeder, C., Benkebil, M., Breton, D., Cizeron, R., Du, S., Grosdidier, G., Hast, C., Höcker, A., Lacker, H.M., LePeltier, V., Lutz, A.M., Plaszczynski, S., Schune, M.H., Trincaz-Duvoid, S., Truong, K., Valassi, A., Wormser, G., Alford, O., Behne, D., Bionta, R.M., Bowman, J., Brigljević, V., Brooks, A., Dacosta, V.A., Fackler, O., Fujino, D., Harper, M., Lange, D.J., Mugge, M., O'Connor, T.G., Olson, H., Ott, L., Parker, E., Pedrotti, B., Roeben, M., Shi, X., van Bibber, K., Wenaus, T.J., Wright, D.M., Wuest, C.R., Yamamoto, B., Carroll, M., Cooke, P., Fry, J.R., Gabathuler, E., Gamet, R., George, M., Kay, M., McMahon, S., Muir, A., Payne, D.J., Sloane, R.J., Sutcliffe, P., Touramanis, C., Aspinwall, M.L., Bowerman, D.A., Dauncey, P.D., Eschrich, I., Gunawardane, N.J.W., Martin, R., Nash, J.A., Price, D.R., Sanders, P., Smith, D., Azzopardi, D.E., Back, J.J., Dixon, P., Harrison, P.F., Newman-Coburn, D., Potter, R.J.L., Shorthouse, H.W., Williams, M.I., Vidal, P.B., Cowan, G., George, S., Green, M.G., Kurup, A., Marker, C.E., McGrath, P., McMahon, T.R., Salvatore, F., Scott, I., Vaitsas, G., Brown, D., Davis, C.L., Li, Y., Pavlovich, J., Allison, J., Barlow, R.J., Boyd, J.T., Fullwood, J., Jackson, F., Khan, A., Lafferty, G.D., Savvas, N., Simopoulos, E.T., Thompson, R.J., Weatherall, J.H., Bard, R., Dallapiccola, C., Farbin, A., Jawahery, A., Lillard, V., Olsen, J., Roberts, D.A., Schieck, J.R., Blaylock, G., Flood, K.T., Hertzbach, S.S., Kofler, R., Lin, C.S., Willocq, S., Wittlin, J., Brau, B., Cowan, R., Taylor, F., Yamamoto, R.K., Britton, D.I., Fernholz, R., Houde, M., Milek, M., Patel, P.M., Trischuk, J., Lanni, F., Palombo, F., Bauer, J.M., Booke, M., Cremaldi, L., Kroeger, R., Reep, M., Reidy, J., Sanders, D.A., Summers, D.J., Arguin, J.F., Beaulieu, M., Martin, J.P., Nief, J.Y., Seitz, R., Taras, P., Woch, A., Zacek, V., Nicholson, H., Sutton, C.S., Cartaro, C., Cavallo, N., De Nardo, G., Fabozzi, F., Gatto, C., Lista, L., Piccolo, D., Sciacca, C., Cason, N.M., LoSecco, J.M., Alsmiller, J.R.G., Gabriel, T.A., Handler, T., Heck, J., Iwasaki, M., Sinev, N.B., Caracciolo, R., Colecchia, F., Dal Corso, F., Galeazzi, F., Marzolla, M., Michelon, G., Morandin, M., Posocco, M., Rotondo, M., Santi, S., Simonetto, F., Stroili, R., Torassa, E., Voci, C., Bailly, P., Benayoun, M., Briand, H., Chauveau, J., David, P., De la Vaissière, C., Del Buono, L., Genat, J.-F., Hamon, O., Leruste, Ph., Le Diberder, F., Lebbolo, H., Lory, J., Martin, L., Martinez-Vidal, F., Roos, L., Stark, J., Versillé, S., Zhang, B., Manfredi, P.F., Ratti, L., Re, V., Speziali, V., Frank, E.D., Gladney, L., Guo, Q.H., Panetta, J.H., Angelini, C., Batignani, G., Bettarini, S., Bondioli, M., Bosi, F., Carpinelli, M., Forti, F., Gaddi, A., Gagliardi, D., Giorgi, M.A., Lusiani, A., Mammini, P., Morganti, M., Morsani, F., Neri, N., Profeti, A., Paoloni, E., Raffaelli, F., Rama, M., Rizzo, G., Sandrelli, F., Simi, G., Triggiani, G., Haire, M., Judd, D., Paick, K., Turnbull, L., Wagoner, D.E., Albert, J., Bula, C., Kelsey, M.H., Lu, C., McDonald, K.T., Miftakov, V., Sands, B., Schaffner, S.F., Smith, A.J.S., Tumanov, A., Varnes, E.W., Bronzini, F., Buccheri, A., Bulfon, C., Cavoto, G., del Re, D., Ferrarotto, F., Ferroni, F., Fratini, K., Lamanna, E., Leonardi, E., Mazzoni, M.A., Morganti, S., Piredda, G., Safai Tehrani, F., Serra, M., Voena, C., Waldi, R., Jacques, P.F., Kalelkar, M., Plano, R.J., Adye, T., Claxton, B., Dowdell, J., Egede, U., Franek, B., Galagedera, S., Geddes, N.I., Gopal, G.P., Kay, J., Lidbury, J., Madani, S., Metcalfe, S., Markey, G., Olley, P., Watt, M., Xella, S.M., Aleksan, R., Besson, P., Bourgeois, P., Convert, P., De Domenico, G., de Lesquen, A., Emery, S., Gaidot, A., Ganzhur, S.F., Georgette, Z., Gosset, L., Graffin, P., Hamel de Monchenault, G., Hervé, S., Karolak, M., Kozanecki, W., Langer, M., London, G.W., Marques, V., Mayer, B., Micout, P., Mols, J.P., Mouly, J.P., Penichot, Y., Rolquin, J., Serfass, B., Toussaint, J.C., Usseglio, M., Vasseur, G., Yeche, C., Zito, M., Copty, N., Purohit, M.V., Yumiceva, F.X., Adam, I., Adesanya, A., Anthony, P.L., Aston, D., Bartelt, J., Becla, J., Bell, R., Bloom, E., Boeheim, C.T., Boyarski, A.M., Boyce, R.F., Briggs, D., Bulos, F., Burgess, W., Byers, B., Calderini, G., Chestnut, R., Claus, R., Convery, M.R., Coombes, R., Cottrell, L., Coupal, D.P., Coward, D.H., Craddock, W.W., DeBarger, S., DeStaebler, H., Dorfan, J., Doser, M., Dunwoodie, W., Dusatko, J.E., Ecklund, S., Fieguth, T.H., Freytag, D.R., Glanzman, T., Godfrey, G.L., Haller, G., Hanushevsky, A., Harris, J., Hasan, A., Hee, C., Himel, T., Huffer, M.E., Hung, T., Innes, W.R., Jessop, C.P., Kawahara, H., Keller, L., King, M.E., Klaisner, L., Krebs, H.J., Langenegger, U., Langeveld, W., Leith, D.W.G.S., Louie, S.K., Luitz, S., Luth, V., Lynch, H.L., McDonald, J., Manzin, G., Marsiske, H., Mattison, T., McCulloch, M., McDougald, M., McShurley, D., Menke, S., Messner, R., Morii, M., Mount, R., Muller, D.R., Nelson, D., Nordby, M., O'Grady, C.P., Olavson, L., O'Neill, F.G., Oxoby, G., Paolucci, P., Pavel, T., Perl, J., Pertsova, M., Petrak, S., Putallaz, G., Raines, P.E., Ratcliff, B.N., Reif, R., Robertson, S.H., Rochester, L.S., Roodman, A., Russel, J.J., Sapozhnikov, L., Saxton, O.H., Schietinger, T., Schindler, R.H., Schwiening, J., Sciolla, G., Seeman, J.T., Serbo, V.V., Shapiro, S., Skarpass Sr, K., Snyder, A., Soderstrom, E., Soha, A., Spanier, S.M., Stahl, A., Stiles, P., Su, D., Sullivan, M.K., Talby, M., Tanaka, H.A., Va'vra, J., Wagner, S.R., Wang, R., Weber, T., Weinstein, A.J.R., White, J.L., Wienands, U., Wisniewski, W.J., Young, C.C., Yu, N., Burchat, P.R., Cheng, C.H., Kirkby, D., Meyer, T.I., Roat, C., Henderson, R., Khan, N., Berridge, S., Bugg, W., Cohn, H., Hart, E., Weidemann, A.W., Benninger, T., Izen, J.M., Kitayama, I., Lou, X.C., Turcotte, M., Bianchi, F., Bona, M., Daudo, F., Di Girolamo, B., Gamba, D., Grosso, P., Smol, A., Trapani, P.P., Zanin, D., Bosisio, L., Della Ricca, G., Lanceri, L., Pompili, A., Poropat, P., Prest, M., Rashevskaia, I., Vallazza, E., Vuagnin, G., Panvini, R.S., Brown, C., De Silva, A., Kowalewski, R., Pitman, D., Roney, J.M., Band, H.R., Charles, E., Dasu, S., Elmer, P., Johnson, J.R., Nielsen, J., Orejudos, W., Pan, Y., Prepost, R., Scott, I.J., Walsh, J., Wu, S.L., Yu, Z., Zobernig, H., Moore, T.B., and Neal, H.

Published
2002
Full Text
View/download PDF

47. An 800-MeV proton radiography facility for dynamic experiments

Author

King, N.S.P, Ables, E, Adams, Ken, Alrick, K.R, Amann, J.F, Balzar, Stephen, Barnes Jr, P.D, Crow, M.L, Cushing, S.B, Eddleman, J.C, Fife, T.T, Flores, Paul, Fujino, D, Gallegos, R.A, Gray, N.T, Hartouni, E.P, Hogan, G.E, Holmes, V.H, Jaramillo, S.A, Knudsson, J.N, London, R.K, Lopez, R.R, McDonald, T.E, McClelland, J.B, Merrill, F.E, Morley, K.B, Morris, C.L, Naivar, F.J, Parker, E.L, Park, H.S, Pazuchanics, P.D, Pillai, C, Riedel, C.M, Sarracino, J.S, Shelley Jr, F.E, Stacy, H.L, Takala, B.E, Thompson, Richard, Tucker, H.E, Yates, G.J, Ziock, H.-J, and Zumbro, J.D

Published
1999
Full Text
View/download PDF

49. Study of gluon versus quark fragmentation in Y → ggγ and e+e- → qq̄γ events at √s=10 GeV

Author

Alam, MS, Athar, S, Ling, Z, Mahmood, A, Severini, H, Timm, S, Wappler, F, Anastassov, A, Blinov, S, Duboscq, J, Fujino, D, Fulton, R, Gan, K, Hart, T, Honscheid, K, Kagan, H, Kass, R, Lee, J, Spencer, M, Sung, M, Undrus, A, Wanke, R, Wolf, A, Zoeller, M, and Nemati, B

Abstract

Using data collected with the CLEO II detector at the Cornell Electron Storage Ring, we determine the ratio Rchrg for the mean charged multiplicity observed in Y(1S)→ggγ events, 〈n±gluon〉, to the mean charged multiplicity observed in e+e-→qq̄γ events, 〈n±quark〉. We find Rchrg≡〈n±gluon〉/〈n±quark〉=1.04 ±0.02(stat)±0.05(syst) for jet-jet masses less than 7 GeV.

Published
2016

50. Investigation of semileptonic B meson decays to p-wave charm mesons

Author

Anastassov, A, Duboscq, J, Fujino, D, Gan, K, Hart, T, Honscheid, K, Kagan, H, Kass, R, Lee, J, Spencer, M, Sung, M, Undrus, A, Wanke, R, Wolf, A, Zoeller, M, Nemati, B, Richichi, S, Ross, W, Skubic, P, Bishai, M, Fast, J, Hinson, J, Menon, N, Miller, D, and Shibata, E

Abstract

We have studied semileptonic B meson decays with a p-wave charm meson in the final state using 3.29 × 106 BB̄ events collected with the CLEO II detector at the Cornell Electron-Positron Storage Ring. We find a value for the exclusive semileptonic product branching fraction ℬ(B- → D10ℓ ν̄ℓ)ℬ(D10 → D*+π-) = (0.373 ± 0.085 ± 0.052 ± 0.024)% and an upper limit for ℬ(ℬ- → D2*0ℓ-ν̄ ℓ)ℬ(D2*0 → D*+π) < 0.16% (90% C.L.). Furthermore, we present the first measurement of the q2 spectrum for B- → D10ℓ-ν̄ℓ.

Published
2016
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results