1. Measurement of the charged multiplicities in B, C and light quark events from Z0 decays
- Author
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Abe, K, Abt, I, Akagi, T, Allen, N, Ash, W, Aston, D, Baird, K, Baltay, C, Band, H, Barakat, M, Baranko, G, Bardon, O, Barklow, T, Bazarko, A, Bendavid, R, Benvenuti, A, Bilei, G, Bisello, D, Blaylock, G, Bogart, J, Bolen, B, Bolton, T, Bower, G, Brau, J, Breidenbach, M, Bugg, W, Burke, D, Burnett, T, Burrows, P, Busza, W, Calcaterra, A, Caldwell, D, Calloway, D, Camanzi, B, Carpinelli, M, Cassell, R, Castaldi, R, Castro, A, Cavallisforza, M, Chou, A, Church, E, Cohn, H, Coller, J, Cook, V, Cotton, R, Cowan, R, Coyne, D, Crawford, G, Doliveira, A, Damerell, C, Daoudi, M, Desangro, R, Dellorso, R, Dervan, P, Dima, M, Dong, D, Du, P, Dubois, R, Eisenstein, B, Elia, R, Etzion, E, Falciai, D, Fan, C, Fero, M, Frey, R, Furuno, K, Gillman, T, Gladding, G, Gonzalez, S, Hallewell, G, Hart, E, Harton, J, Hasan, A, Hasegawa, Y, Hasuko, K, Hedges, S, Hertzbach, S, Hildreth, M, Huber, J, Huffer, M, Hughes, E, Hwang, H, Iwasaki, Y, Jackson, D, Jacques, P, Jaros, J, Johnson, A, Johnson, J, Johnson, R, Junk, T, Kajikawa, R, Kalelkar, M, Kang, H, Karliner, I, Kawahara, H, Kendall, H, Kim, Y, King, M, King, R, Kofler, R, Krishna, N, Kroeger, R, Labs, J, Langston, M, Lath, A, Lauber, J, Leith, D, Lia, V, Liu, M, Liu, X, Loreti, M, Lu, A, Lynch, H, Ma, J, Mancinelli, G, Manly, S, Mantovani, G, Markiewicz, T, Maruyama, T, Masuda, H, Mazzucato, E, Mckemey, A, Meadows, B, Messner, R, Mockett, P, Moffeit, K, Moore, T, Muller, D, Nagamine, T, Narita, S, Nauenberg, U, Neal, H, Nussbaum, M, Ohnishi, Y, Osborne, L, Panvini, R, Park, H, Pavel, T, Peruzzi, I, Piccolo, M, Piemontese, L, Pieroni, E, Pitts, K, Plano, R, Prepost, R, Prescott, C, Punkar, G, Quigley, J, Ratcliff, B, Reeves, T, Reidy, J, Rensing, P, Rochester, L, Rowson, P, Russell, J, Saxton, O, Schalk, T, Schindler, R, Schumm, B, Sen, S, Serbo, V, Shaevitz, M, Shank, J, Shapiro, G, Sherden, D, Shmakov, K, Simopoulos, C, Sinev, N, Smith, S, Smy, M, Snyder, J, Stamer, P, Steiner, H, Steiner, R, Strauss, M, Su, D, Suekane, F, Sugiyama, A, Suzuki, S, Swartz, M, Szumilo, A, Takahashi, T, Taylor, F, Torrence, E, Trandafir, A, Turk, J, Usher, T, Vavra, J, Vannini, C, Vella, E, Venuti, J, Verdier, R, Verdini, P, Wagner, S, Waite, A, Watts, S, Weidemann, A, Weiss, E, Whitaker, J, White, S, Wickens, F, Williams, D, Williams, S, Willocq, S, Wilson, R, Wisniewski, W, Woods, M, Word, G, Wyss, J, Yamamoto, R, Yamartino, J, Yang, X, Yellin, S, Young, C, Yuta, H, Zapalac, G, Zdarko, R, Zeitlin, C, Zhou, J, Abe K, Abt I, Akagi T, Allen NJ, Ash WW, Aston D, Baird KG, Baltay C, Band HR, Barakat MB, Baranko G, Bardon O, Barklow T, Bazarko AO, BenDavid R, Benvenuti AC, Bilei GM, Bisello D, Blaylock G, Bogart JR, Bolen B, Bolton T, Bower GR, Brau JE, Breidenbach M, Bugg WM, Burke D, Burnett TH, Burrows PN, Busza W, Calcaterra A, Caldwell DO, Calloway D, Camanzi B, CARPINELLI, Massimo, Cassell R, Castaldi R, Castro A, CavalliSforza M, Chou A, Church E, Cohn HO, Coller JA, Cook V, Cotton R, Cowan RF, Coyne DG, Crawford G, DOliveira A, Damerell CJS, Daoudi M, DeSangro R, DellOrso R, Dervan PJ, Dima M, Dong DN, Du PYC, Dubois R, Eisenstein BI, Elia R, Etzion E, Falciai D, Fan C, Fero MJ, Frey R, Furuno K, Gillman T, Gladding G, Gonzalez S, Hallewell GD, Hart EL, Harton JL, Hasan A, Hasegawa Y, Hasuko K, Hedges SJ, Hertzbach SS, Hildreth MD, Huber J, Huffer ME, Hughes EW, Hwang H, Iwasaki Y, Jackson DJ, Jacques P, Jaros JA, Johnson AS, Johnson JR, Johnson RA, Junk T, Kajikawa R, Kalelkar M, Kang HJ, Karliner I, Kawahara H, Kendall HW, Kim YD, King ME, King R, Kofler RR, Krishna NM, Kroeger RS, Labs JF, Langston M, Lath A, Lauber JA, Leith DWGS, Lia V, Liu MX, Liu X, Loreti M, Lu A, Lynch HL, Ma J, Mancinelli G, Manly S, Mantovani G, Markiewicz TW, Maruyama T, Masuda H, Mazzucato E, McKemey AK, Meadows BT, Messner R, Mockett PM, Moffeit KC, Moore TB, Muller D, Nagamine T, Narita S, Nauenberg U, Neal H, Nussbaum M, Ohnishi Y, Osborne LS, Panvini RS, Park H, Pavel TJ, Peruzzi I, Piccolo M, Piemontese L, Pieroni E, Pitts KT, Plano RJ, Prepost R, Prescott CY, Punkar GD, Quigley J, Ratcliff BN, Reeves TW, Reidy J, Rensing PE, Rochester LS, Rowson PC, Russell JJ, Saxton OH, Schalk T, Schindler RH, Schumm BA, Sen S, Serbo VV, Shaevitz MH, Shank JT, Shapiro G, Sherden DJ, Shmakov KD, Simopoulos C, Sinev NB, Smith SR, Smy MB, Snyder JA, Stamer P, Steiner H, Steiner R, Strauss MG, Su D, Suekane F, Sugiyama A, Suzuki S, Swartz M, Szumilo A, Takahashi T, Taylor FE, Torrence E, Trandafir AI, Turk JD, Usher T, Vavra J, Vannini C, Vella E, Venuti JP, Verdier R, Verdini PG, Wagner SR, Waite AP, Watts SJ, Weidemann AW, Weiss ER, Whitaker JS, White SL, Wickens FJ, Williams DA, Williams DC, Williams SH, Willocq S, Wilson RJ, Wisniewski WJ, Woods M, Word GB, Wyss J, Yamamoto RK, Yamartino JM, Yang X, Yellin SJ, Young CC, Yuta H, Zapalac G, Zdarko RW, Zeitlin C, Zhou J., Abe, K, Abt, I, Akagi, T, Allen, N, Ash, W, Aston, D, Baird, K, Baltay, C, Band, H, Barakat, M, Baranko, G, Bardon, O, Barklow, T, Bazarko, A, Bendavid, R, Benvenuti, A, Bilei, G, Bisello, D, Blaylock, G, Bogart, J, Bolen, B, Bolton, T, Bower, G, Brau, J, Breidenbach, M, Bugg, W, Burke, D, Burnett, T, Burrows, P, Busza, W, Calcaterra, A, Caldwell, D, Calloway, D, Camanzi, B, Carpinelli, M, Cassell, R, Castaldi, R, Castro, A, Cavallisforza, M, Chou, A, Church, E, Cohn, H, Coller, J, Cook, V, Cotton, R, Cowan, R, Coyne, D, Crawford, G, Doliveira, A, Damerell, C, Daoudi, M, Desangro, R, Dellorso, R, Dervan, P, Dima, M, Dong, D, Du, P, Dubois, R, Eisenstein, B, Elia, R, Etzion, E, Falciai, D, Fan, C, Fero, M, Frey, R, Furuno, K, Gillman, T, Gladding, G, Gonzalez, S, Hallewell, G, Hart, E, Harton, J, Hasan, A, Hasegawa, Y, Hasuko, K, Hedges, S, Hertzbach, S, Hildreth, M, Huber, J, Huffer, M, Hughes, E, Hwang, H, Iwasaki, Y, Jackson, D, Jacques, P, Jaros, J, Johnson, A, Johnson, J, Johnson, R, Junk, T, Kajikawa, R, Kalelkar, M, Kang, H, Karliner, I, Kawahara, H, Kendall, H, Kim, Y, King, M, King, R, Kofler, R, Krishna, N, Kroeger, R, Labs, J, Langston, M, Lath, A, Lauber, J, Leith, D, Lia, V, Liu, M, Liu, X, Loreti, M, Lu, A, Lynch, H, Ma, J, Mancinelli, G, Manly, S, Mantovani, G, Markiewicz, T, Maruyama, T, Masuda, H, Mazzucato, E, Mckemey, A, Meadows, B, Messner, R, Mockett, P, Moffeit, K, Moore, T, Muller, D, Nagamine, T, Narita, S, Nauenberg, U, Neal, H, Nussbaum, M, Ohnishi, Y, Osborne, L, Panvini, R, Park, H, Pavel, T, Peruzzi, I, Piccolo, M, Piemontese, L, Pieroni, E, Pitts, K, Plano, R, Prepost, R, Prescott, C, Punkar, G, Quigley, J, Ratcliff, B, Reeves, T, Reidy, J, Rensing, P, Rochester, L, Rowson, P, Russell, J, Saxton, O, Schalk, T, Schindler, R, Schumm, B, Sen, S, Serbo, V, Shaevitz, M, Shank, J, Shapiro, G, Sherden, D, Shmakov, K, Simopoulos, C, Sinev, N, Smith, S, Smy, M, Snyder, J, Stamer, P, Steiner, H, Steiner, R, Strauss, M, Su, D, Suekane, F, Sugiyama, A, Suzuki, S, Swartz, M, Szumilo, A, Takahashi, T, Taylor, F, Torrence, E, Trandafir, A, Turk, J, Usher, T, Vavra, J, Vannini, C, Vella, E, Venuti, J, Verdier, R, Verdini, P, Wagner, S, Waite, A, Watts, S, Weidemann, A, Weiss, E, Whitaker, J, White, S, Wickens, F, Williams, D, Williams, S, Willocq, S, Wilson, R, Wisniewski, W, Woods, M, Word, G, Wyss, J, Yamamoto, R, Yamartino, J, Yang, X, Yellin, S, Young, C, Yuta, H, Zapalac, G, Zdarko, R, Zeitlin, C, Zhou, J, Abe K, Abt I, Akagi T, Allen NJ, Ash WW, Aston D, Baird KG, Baltay C, Band HR, Barakat MB, Baranko G, Bardon O, Barklow T, Bazarko AO, BenDavid R, Benvenuti AC, Bilei GM, Bisello D, Blaylock G, Bogart JR, Bolen B, Bolton T, Bower GR, Brau JE, Breidenbach M, Bugg WM, Burke D, Burnett TH, Burrows PN, Busza W, Calcaterra A, Caldwell DO, Calloway D, Camanzi B, CARPINELLI, Massimo, Cassell R, Castaldi R, Castro A, CavalliSforza M, Chou A, Church E, Cohn HO, Coller JA, Cook V, Cotton R, Cowan RF, Coyne DG, Crawford G, DOliveira A, Damerell CJS, Daoudi M, DeSangro R, DellOrso R, Dervan PJ, Dima M, Dong DN, Du PYC, Dubois R, Eisenstein BI, Elia R, Etzion E, Falciai D, Fan C, Fero MJ, Frey R, Furuno K, Gillman T, Gladding G, Gonzalez S, Hallewell GD, Hart EL, Harton JL, Hasan A, Hasegawa Y, Hasuko K, Hedges SJ, Hertzbach SS, Hildreth MD, Huber J, Huffer ME, Hughes EW, Hwang H, Iwasaki Y, Jackson DJ, Jacques P, Jaros JA, Johnson AS, Johnson JR, Johnson RA, Junk T, Kajikawa R, Kalelkar M, Kang HJ, Karliner I, Kawahara H, Kendall HW, Kim YD, King ME, King R, Kofler RR, Krishna NM, Kroeger RS, Labs JF, Langston M, Lath A, Lauber JA, Leith DWGS, Lia V, Liu MX, Liu X, Loreti M, Lu A, Lynch HL, Ma J, Mancinelli G, Manly S, Mantovani G, Markiewicz TW, Maruyama T, Masuda H, Mazzucato E, McKemey AK, Meadows BT, Messner R, Mockett PM, Moffeit KC, Moore TB, Muller D, Nagamine T, Narita S, Nauenberg U, Neal H, Nussbaum M, Ohnishi Y, Osborne LS, Panvini RS, Park H, Pavel TJ, Peruzzi I, Piccolo M, Piemontese L, Pieroni E, Pitts KT, Plano RJ, Prepost R, Prescott CY, Punkar GD, Quigley J, Ratcliff BN, Reeves TW, Reidy J, Rensing PE, Rochester LS, Rowson PC, Russell JJ, Saxton OH, Schalk T, Schindler RH, Schumm BA, Sen S, Serbo VV, Shaevitz MH, Shank JT, Shapiro G, Sherden DJ, Shmakov KD, Simopoulos C, Sinev NB, Smith SR, Smy MB, Snyder JA, Stamer P, Steiner H, Steiner R, Strauss MG, Su D, Suekane F, Sugiyama A, Suzuki S, Swartz M, Szumilo A, Takahashi T, Taylor FE, Torrence E, Trandafir AI, Turk JD, Usher T, Vavra J, Vannini C, Vella E, Venuti JP, Verdier R, Verdini PG, Wagner SR, Waite AP, Watts SJ, Weidemann AW, Weiss ER, Whitaker JS, White SL, Wickens FJ, Williams DA, Williams DC, Williams SH, Willocq S, Wilson RJ, Wisniewski WJ, Woods M, Word GB, Wyss J, Yamamoto RK, Yamartino JM, Yang X, Yellin SJ, Young CC, Yuta H, Zapalac G, Zdarko RW, Zeitlin C, and Zhou J.
- Abstract
Average charged multiplicities have been measured separately in b, c and light quark (u, d, s) events from Z0 decays measured in the SLD experiment. Impact parameters of charged tracks were used to select enriched samples of b and light quark events, and reconstructed charmed mesons were used to select c quark events. We measured the charged multiplicities: nuds = 20.21 ± 0.10 (stat.) ± 0.22 (syst.), nc = 21.28 ± 0.46 (stat.)+0−04136 (syst.) and nb = 23.14 ± 0.10 (stat.)+0−03837 (syst.), from which we derived the differences between the total average charged multiplicities of c or b quark events and light quark events: ∆nc = 1.07 ± 0.47 (stat.)+0−03630 (syst.) and ∆nb = 2.93 ± 0.14 (stat.)+0−03029 (syst.). We compared these measurements with those at lower center-of-mass energies and with perturbative QCD predictions. These combined results are in agreement with the QCD expectations and disfavor the hypothesis of flavor-independent fragmentation.
- Published
- 1996