1. Measurement of the charged multiplicity of Z0→bb̄ events
- Author
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Abe, K, Abt, I, Ash, W, Aston, D, Bacchetta, N, Baird, K, Baltay, C, Band, H, Barakat, M, Baranko, G, Bardon, O, Battiston, R, Bazarko, A, Bean, A, Belcinski, R, Bendavid, R, Benvenuti, A, Biasini, M, Bienz, T, Bilei, G, Bisello, D, Blaylock, G, Bogart, J, 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, Carr, J, Cassell, R, Castaldi, R, Castro, A, Cavallisforza, M, Chadwick, G, Chen, L, Church, E, Claus, R, Cohn, H, Coller, J, Cook, V, Cotton, R, Cowan, R, Coyle, P, Coyne, D, Doliveira, A, Damerell, C, Dasu, S, Desangro, R, Desimone, P, Desimone, S, Dellorso, R, Du, P, Dubois, R, Duboscq, J, Eisentein, B, Elia, R, Erdos, E, Fan, C, Farhat, B, Fero, M, Frey, R, Friedman, J, Furuno, K, Gallinaro, M, Gillman, A, Gladding, G, Gonzalez, S, Hallewell, G, Hanslkozanecka, T, Hart, E, Hasegawa, K, Hasegawa, Y, Hedges, S, Hertzbach, S, Hildreth, M, Hitlin, D, Honma, A, Huber, J, Huffer, M, Hughes, E, Hwang, H, Iwasaki, Y, Izen, J, Jacques, P, Johnson, A, Johnson, J, Johnson, R, Junk, T, Kajikawa, R, Kalelkar, M, Karliner, I, Kawahara, H, Kelsey, M, Kendall, H, Kim, H, King, M, King, R, Kofler, R, Krishna, N, Kroeger, R, Kwon, Y, Labs, J, Langston, M, Lath, A, Lauber, J, Leith, D, Liu, X, Loreti, M, Lu, A, Lynch, H, Ma, J, Majid, W, Mancinelli, G, Manly, S, Mantovani, G, Markiewicz, T, Maruyama, T, Masuda, H, Mazzucato, E, Mcgowan, J, Mchugh, S, Mckemey, A, Meadows, B, Mellor, D, Messner, R, Mockett, P, Moffeit, K, Mours, B, Muller, G, Muller, D, Nagamine, T, Nauenberg, U, Neal, H, Nussbaum, M, Osborne, L, Panvini, R, Park, H, Pauluzzi, M, Pavel, T, Perrier, F, Peruzzi, I, Pescara, L, Petradza, M, Piccolo, M, Piemontese, L, Pieroni, E, Pitts, K, Plano, R, Prepost, R, Prescott, C, Punkar, G, Quigley, J, Ratcliff, B, Reeves, T, Rensing, P, Richman, J, Rochester, L, Rosenson, L, Rothberg, J, Rousakov, S, Rowson, P, Russell, J, Saez, P, Saxton, O, Schalk, T, Schindler, R, Schneekloth, U, Schultz, D, Schumm, B, Seiden, A, Sen, S, Servoli, L, Shaevitz, M, Shank, J, Shapiro, G, Shapiro, S, Sherden, D, Shypit, R, Simopoulos, C, Smith, S, Snyder, J, Sokoloff, M, Stamer, P, Steiner, H, Steiner, R, Stockdale, I, Strauss, M, Su, D, Suekane, F, Sugiyama, A, Suzuki, S, Swartz, M, Szumilo, A, Takahashi, T, Taylor, F, Tecchio, M, Thaler, J, Toge, N, Torrence, E, Turcotte, M, Turk, J, Usher, T, Vavra, J, Vannini, C, Vella, E, Venuti, J, Verdier, R, Verdini, P, Wagner, S, Waite, A, Watts, S, Weidemann, A, Whitaker, J, White, S, Wickens, F, Williams, D, Williams, S, Willocq, S, Wilson, R, Wisniewski, W, Witherell, M, Woods, M, Word, G, Wyss, J, Yamamoto, R, Yamartino, J, Yellin, S, Young, C, Yuta, H, Zapalac, G, Zdarko, R, Zeitlin, C, Zhou, J, Zolotorev, M, Zucchelli, P, ABE K, ABT I, ASH WW, ASTON D, BACCHETTA N, BAIRD KG, BALTAY C, BAND HR, BARAKAT MB, BARANKO G, BARDON O, BATTISTON R, BAZARKO AO, BEAN A, BELCINSKI RJ, BENDAVID R, BENVENUTI AC, BIASINI M, BIENZ T, BILEI GM, BISELLO D, BLAYLOCK G, BOGART JR, 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, CARR J, CASSELL R, CASTALDI R, CASTRO A, CAVALLISFORZA M, CHADWICK GB, CHEN L, CHURCH E, CLAUS R, COHN HO, COLLER JA, COOK V, COTTON R, COWAN RF, COYLE PA, COYNE DG, DOLIVEIRA A, DAMERELL CJS, DASU S, DESANGRO R, DESIMONE P, DESIMONE S, DELLORSO R, DU PYC, DUBOIS R, DUBOSCQ JE, EISENTEIN BI, ELIA R, ERDOS E, FAN C, FARHAT B, FERO MJ, FREY R, FRIEDMAN JI, FURUNO K, GALLINARO M, GILLMAN A, GLADDING G, GONZALEZ S, HALLEWELL GD, HANSLKOZANECKA T, HART EL, HASEGAWA K, HASEGAWA Y, HEDGES S, HERTZBACH SS, HILDRETH MD, HITLIN DG, HONMA A, HUBER J, HUFFER ME, HUGHES EW, HWANG H, IWASAKI Y, IZEN JM, JACQUES P, JOHNSON AS, JOHNSON JR, JOHNSON RA, JUNK T, KAJIKAWA R, KALELKAR M, KARLINER I, KAWAHARA H, KELSEY MH, KENDALL HW, KIM HY, KING ME, KING R, KOFLER RR, KRISHNA NM, KROEGER RS, KWON Y, LABS JF, LANGSTON M, LATH A, LAUBER JA, LEITH DWG, LIU X, LORETI M, LU A, LYNCH HL, MA J, MAJID WA, MANCINELLI G, MANLY S, MANTOVANI G, MARKIEWICZ TW, MARUYAMA T, MASUDA H, MAZZUCATO E, MCGOWAN JF, MCHUGH S, MCKEMEY AK, MEADOWS BT, MELLOR DJ, MESSNER R, MOCKETT PM, MOFFEIT KC, MOURS B, MULLER G, MULLER D, NAGAMINE T, NAUENBERG U, NEAL H, NUSSBAUM M, OSBORNE LS, PANVINI RS, PARK H, PAULUZZI M, PAVEL TJ, PERRIER F, PERUZZI I, PESCARA L, PETRADZA M, PICCOLO M, PIEMONTESE L, PIERONI E, PITTS KT, PLANO RJ, PREPOST R, PRESCOTT CY, PUNKAR GD, QUIGLEY J, RATCLIFF BN, REEVES TW, RENSING PE, RICHMAN JD, ROCHESTER LS, ROSENSON L, ROTHBERG JE, ROUSAKOV S, ROWSON PC, RUSSELL JJ, SAEZ P, SAXTON OH, SCHALK T, SCHINDLER RH, SCHNEEKLOTH U, SCHULTZ D, SCHUMM BA, SEIDEN A, SEN S, SERVOLI L, SHAEVITZ MH, SHANK JT, SHAPIRO G, SHAPIRO SL, SHERDEN DJ, SHYPIT RL, SIMOPOULOS C, SMITH SR, SNYDER JA, SOKOLOFF MD, STAMER P, STEINER H, STEINER R, STOCKDALE IE, STRAUSS MG, SU D, SUEKANE F, SUGIYAMA A, SUZUKI S, SWARTZ M, SZUMILO A, TAKAHASHI T, TAYLOR FE, TECCHIO M, THALER JJ, TOGE N, TORRENCE E, TURCOTTE M, TURK JD, USHER T, VAVRA J, VANNINI C, VELLA E, VENUTI JP, VERDIER R, VERDINI PG, WAGNER S, WAITE AP, WATTS SJ, WEIDEMANN AW, WHITAKER JS, WHITE SL, WICKENS FJ, WILLIAMS DA, WILLIAMS DC, WILLIAMS SH, WILLOCQ S, WILSON RJ, WISNIEWSKI WJ, WITHERELL MS, WOODS M, WORD GB, WYSS J, YAMAMOTO RK, YAMARTINO JM, YELLIN SJ, YOUNG CC, YUTA H, ZAPALAC G, ZDARKO RW, ZEITLIN C, ZHOU J, ZOLOTOREV M, ZUCCHELLI P., Abe, K, Abt, I, Ash, W, Aston, D, Bacchetta, N, Baird, K, Baltay, C, Band, H, Barakat, M, Baranko, G, Bardon, O, Battiston, R, Bazarko, A, Bean, A, Belcinski, R, Bendavid, R, Benvenuti, A, Biasini, M, Bienz, T, Bilei, G, Bisello, D, Blaylock, G, Bogart, J, 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, Carr, J, Cassell, R, Castaldi, R, Castro, A, Cavallisforza, M, Chadwick, G, Chen, L, Church, E, Claus, R, Cohn, H, Coller, J, Cook, V, Cotton, R, Cowan, R, Coyle, P, Coyne, D, Doliveira, A, Damerell, C, Dasu, S, Desangro, R, Desimone, P, Desimone, S, Dellorso, R, Du, P, Dubois, R, Duboscq, J, Eisentein, B, Elia, R, Erdos, E, Fan, C, Farhat, B, Fero, M, Frey, R, Friedman, J, Furuno, K, Gallinaro, M, Gillman, A, Gladding, G, Gonzalez, S, Hallewell, G, Hanslkozanecka, T, Hart, E, Hasegawa, K, Hasegawa, Y, Hedges, S, Hertzbach, S, Hildreth, M, Hitlin, D, Honma, A, Huber, J, Huffer, M, Hughes, E, Hwang, H, Iwasaki, Y, Izen, J, Jacques, P, Johnson, A, Johnson, J, Johnson, R, Junk, T, Kajikawa, R, Kalelkar, M, Karliner, I, Kawahara, H, Kelsey, M, Kendall, H, Kim, H, King, M, King, R, Kofler, R, Krishna, N, Kroeger, R, Kwon, Y, Labs, J, Langston, M, Lath, A, Lauber, J, Leith, D, Liu, X, Loreti, M, Lu, A, Lynch, H, Ma, J, Majid, W, Mancinelli, G, Manly, S, Mantovani, G, Markiewicz, T, Maruyama, T, Masuda, H, Mazzucato, E, Mcgowan, J, Mchugh, S, Mckemey, A, Meadows, B, Mellor, D, Messner, R, Mockett, P, Moffeit, K, Mours, B, Muller, G, Muller, D, Nagamine, T, Nauenberg, U, Neal, H, Nussbaum, M, Osborne, L, Panvini, R, Park, H, Pauluzzi, M, Pavel, T, Perrier, F, Peruzzi, I, Pescara, L, Petradza, M, Piccolo, M, Piemontese, L, Pieroni, E, Pitts, K, Plano, R, Prepost, R, Prescott, C, Punkar, G, Quigley, J, Ratcliff, B, Reeves, T, Rensing, P, Richman, J, Rochester, L, Rosenson, L, Rothberg, J, Rousakov, S, Rowson, P, Russell, J, Saez, P, Saxton, O, Schalk, T, Schindler, R, Schneekloth, U, Schultz, D, Schumm, B, Seiden, A, Sen, S, Servoli, L, Shaevitz, M, Shank, J, Shapiro, G, Shapiro, S, Sherden, D, Shypit, R, Simopoulos, C, Smith, S, Snyder, J, Sokoloff, M, Stamer, P, Steiner, H, Steiner, R, Stockdale, I, Strauss, M, Su, D, Suekane, F, Sugiyama, A, Suzuki, S, Swartz, M, Szumilo, A, Takahashi, T, Taylor, F, Tecchio, M, Thaler, J, Toge, N, Torrence, E, Turcotte, M, Turk, J, Usher, T, Vavra, J, Vannini, C, Vella, E, Venuti, J, Verdier, R, Verdini, P, Wagner, S, Waite, A, Watts, S, Weidemann, A, Whitaker, J, White, S, Wickens, F, Williams, D, Williams, S, Willocq, S, Wilson, R, Wisniewski, W, Witherell, M, Woods, M, Word, G, Wyss, J, Yamamoto, R, Yamartino, J, Yellin, S, Young, C, Yuta, H, Zapalac, G, Zdarko, R, Zeitlin, C, Zhou, J, Zolotorev, M, Zucchelli, P, ABE K, ABT I, ASH WW, ASTON D, BACCHETTA N, BAIRD KG, BALTAY C, BAND HR, BARAKAT MB, BARANKO G, BARDON O, BATTISTON R, BAZARKO AO, BEAN A, BELCINSKI RJ, BENDAVID R, BENVENUTI AC, BIASINI M, BIENZ T, BILEI GM, BISELLO D, BLAYLOCK G, BOGART JR, 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, CARR J, CASSELL R, CASTALDI R, CASTRO A, CAVALLISFORZA M, CHADWICK GB, CHEN L, CHURCH E, CLAUS R, COHN HO, COLLER JA, COOK V, COTTON R, COWAN RF, COYLE PA, COYNE DG, DOLIVEIRA A, DAMERELL CJS, DASU S, DESANGRO R, DESIMONE P, DESIMONE S, DELLORSO R, DU PYC, DUBOIS R, DUBOSCQ JE, EISENTEIN BI, ELIA R, ERDOS E, FAN C, FARHAT B, FERO MJ, FREY R, FRIEDMAN JI, FURUNO K, GALLINARO M, GILLMAN A, GLADDING G, GONZALEZ S, HALLEWELL GD, HANSLKOZANECKA T, HART EL, HASEGAWA K, HASEGAWA Y, HEDGES S, HERTZBACH SS, HILDRETH MD, HITLIN DG, HONMA A, HUBER J, HUFFER ME, HUGHES EW, HWANG H, IWASAKI Y, IZEN JM, JACQUES P, JOHNSON AS, JOHNSON JR, JOHNSON RA, JUNK T, KAJIKAWA R, KALELKAR M, KARLINER I, KAWAHARA H, KELSEY MH, KENDALL HW, KIM HY, KING ME, KING R, KOFLER RR, KRISHNA NM, KROEGER RS, KWON Y, LABS JF, LANGSTON M, LATH A, LAUBER JA, LEITH DWG, LIU X, LORETI M, LU A, LYNCH HL, MA J, MAJID WA, MANCINELLI G, MANLY S, MANTOVANI G, MARKIEWICZ TW, MARUYAMA T, MASUDA H, MAZZUCATO E, MCGOWAN JF, MCHUGH S, MCKEMEY AK, MEADOWS BT, MELLOR DJ, MESSNER R, MOCKETT PM, MOFFEIT KC, MOURS B, MULLER G, MULLER D, NAGAMINE T, NAUENBERG U, NEAL H, NUSSBAUM M, OSBORNE LS, PANVINI RS, PARK H, PAULUZZI M, PAVEL TJ, PERRIER F, PERUZZI I, PESCARA L, PETRADZA M, PICCOLO M, PIEMONTESE L, PIERONI E, PITTS KT, PLANO RJ, PREPOST R, PRESCOTT CY, PUNKAR GD, QUIGLEY J, RATCLIFF BN, REEVES TW, RENSING PE, RICHMAN JD, ROCHESTER LS, ROSENSON L, ROTHBERG JE, ROUSAKOV S, ROWSON PC, RUSSELL JJ, SAEZ P, SAXTON OH, SCHALK T, SCHINDLER RH, SCHNEEKLOTH U, SCHULTZ D, SCHUMM BA, SEIDEN A, SEN S, SERVOLI L, SHAEVITZ MH, SHANK JT, SHAPIRO G, SHAPIRO SL, SHERDEN DJ, SHYPIT RL, SIMOPOULOS C, SMITH SR, SNYDER JA, SOKOLOFF MD, STAMER P, STEINER H, STEINER R, STOCKDALE IE, STRAUSS MG, SU D, SUEKANE F, SUGIYAMA A, SUZUKI S, SWARTZ M, SZUMILO A, TAKAHASHI T, TAYLOR FE, TECCHIO M, THALER JJ, TOGE N, TORRENCE E, TURCOTTE M, TURK JD, USHER T, VAVRA J, VANNINI C, VELLA E, VENUTI JP, VERDIER R, VERDINI PG, WAGNER S, WAITE AP, WATTS SJ, WEIDEMANN AW, WHITAKER JS, WHITE SL, WICKENS FJ, WILLIAMS DA, WILLIAMS DC, WILLIAMS SH, WILLOCQ S, WILSON RJ, WISNIEWSKI WJ, WITHERELL MS, WOODS M, WORD GB, WYSS J, YAMAMOTO RK, YAMARTINO JM, YELLIN SJ, YOUNG CC, YUTA H, ZAPALAC G, ZDARKO RW, ZEITLIN C, ZHOU J, ZOLOTOREV M, and ZUCCHELLI P.
- Abstract
Using an impact parameter tag to select an enriched sample of Z0→bb̄ events, we have measured the difference between the average charged multiplicity of Z0→bb̄ and Z0→ hadrons to be n̄b-n̄had=2.24±0.30 (stat) ±0.33 (syst) tracks per event. From this, we have derived n̄b-n̄uds=3.31±0.41±0. 79. Comparing this measurement with those at lower center-of-mass energies, we find no evidence that n̄b-n̄uds depends on energy. This result is in agreement with a precise prediction of perturbative QCD, and supports the notion that QCD remains asymptotically free down to the scale Mb2.
- Published
- 1994