The decays W --> ev and Z --> e+e- are studied in ppBAR collisions at square-root s = 630 GeV. The products of production cross section and branching ratio are measured as sigma(W)e = 682 +/- 12 +/- 40 pb and sigma(Z)e = 65.6 +/- 4.0 +/- 3.8 pb. The results are in good agreement with O (alpha(s)2) calculations of the production cross sections. Many systematic effects cancel in the ratio, R = 10.4 +/- 0.6(0.7) +/- 0.3, which can be used to give an indirect measurement of the total width of the W boson: GAMMA(W) = 2.10 +/- 0.13 +/- 0.09 GeV. The width gives a limit on the top quark mass, m(top) > 53 GeV (95% CL), which is independent of the top decay mode.

A MEASUREMENT OF THE W AND Z PRODUCTION CROSS-SECTIONS AND A DETERMINATION OF GAMMA-W AT THE CERN PBARP COLLIDER / J. ALITTI, G. AMBROSINI, R. ANSARI, D. AUTIERO, P. BAREYRE, I. BERTRAM, G. BLAYLOCK, P. BONAMY, K. BORER, M. BOURLIAUD, D. BUSKULIC, G. CARBONI, D. CAVALLI, V. CAVASINNI, P. CENCI, J. CHOLLET, C. CONTA, G. COSTA, F. COSTANTINI, L. COZZI, A. CRAVERO, M. CURATOLO, A. DELLACQUA, T. DELPRETE, R. DEWOLF, L. DILELLA, Y. DUCROS, G. EGAN, K. EINSWEILER, B. ESPOSITO, L. FAYARD, A. FEDERSPIEL, R. FERRARI, M. FRATERNALI, D. FROIDEVAUX, G. FUMAGALLI, J. GAILLARD, F. GAINOTTI, O. GILDEMEISTER, C. GOSSLING, V. GOGGI, S. GRUNENDAHL, K. HARA, S. HELLMAN, J. HRIVNAC, H. HUFNAGEL, E. HUGENTOBLER, K. HULTQVIST, E. IACOPINI, J. INCANDELA, K. JAKOBS, P. JENNI, E. KLUGE, N. KURZ, S. LAMI, P. LARICCIA, M. LEFEBVRE, L. LINSSEN, M. LIVAN, P. LUBRANO, C. MAGNEVILLE, L. MANDELLI, L. MAPELLI, M. MAZZANTI, K. MEIER, B. MERKEL, J. MEYER, M. MONIEZ, R. MONING, M. MORGANTI, L. MULLER, D. MUNDAY, M. NESSI, F. NESSITEDALDI, C. ONIONS, T. PAL, M. PARKER, G. PARROUR, F. PASTORE, E. PENNACCHIO, J. PENTNEY, M. PEPE, L. PERINI, C. PETRIDOU, P. PETROFF, H. PLOTHOWBESCH, G. POLESELLO, A. POPPLETON, K. PRETZL, M. PRIMAVERA, M. PUNTURO, J. REPELLIN, A. RIMOLDI, M. SACCHI, P. SCAMPOLI, J. SCHACHER, B. SCHMIDT, V. SIMAK, S. SINGH, V. SONDERMANN, R. SPIWOKS, S. STAPNES, C. TALAMONTI, F. TONDINI, S. TOVEY, E. TSESMELIS, G. UNAL, M. VALDATANAPPI, V. VERCESI, A. WEIDBERG, P. WELLS, T. WHITE, D. WOOD, S. WOTTON, H. ZACCONE, A. ZYLBERSTEJN. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 276:3(1992), pp. 365-374.

A MEASUREMENT OF THE W AND Z PRODUCTION CROSS-SECTIONS AND A DETERMINATION OF GAMMA-W AT THE CERN PBARP COLLIDER

L. PERINI;
1992

Abstract

The decays W --> ev and Z --> e+e- are studied in ppBAR collisions at square-root s = 630 GeV. The products of production cross section and branching ratio are measured as sigma(W)e = 682 +/- 12 +/- 40 pb and sigma(Z)e = 65.6 +/- 4.0 +/- 3.8 pb. The results are in good agreement with O (alpha(s)2) calculations of the production cross sections. Many systematic effects cancel in the ratio, R = 10.4 +/- 0.6(0.7) +/- 0.3, which can be used to give an indirect measurement of the total width of the W boson: GAMMA(W) = 2.10 +/- 0.13 +/- 0.09 GeV. The width gives a limit on the top quark mass, m(top) > 53 GeV (95% CL), which is independent of the top decay mode.
English
Settore FIS/04 - Fisica Nucleare e Subnucleare
Articolo
Esperti anonimi
1992
276
3
365
374
Pubblicato
Periodico con rilevanza internazionale
info:eu-repo/semantics/article
A MEASUREMENT OF THE W AND Z PRODUCTION CROSS-SECTIONS AND A DETERMINATION OF GAMMA-W AT THE CERN PBARP COLLIDER / J. ALITTI, G. AMBROSINI, R. ANSARI, D. AUTIERO, P. BAREYRE, I. BERTRAM, G. BLAYLOCK, P. BONAMY, K. BORER, M. BOURLIAUD, D. BUSKULIC, G. CARBONI, D. CAVALLI, V. CAVASINNI, P. CENCI, J. CHOLLET, C. CONTA, G. COSTA, F. COSTANTINI, L. COZZI, A. CRAVERO, M. CURATOLO, A. DELLACQUA, T. DELPRETE, R. DEWOLF, L. DILELLA, Y. DUCROS, G. EGAN, K. EINSWEILER, B. ESPOSITO, L. FAYARD, A. FEDERSPIEL, R. FERRARI, M. FRATERNALI, D. FROIDEVAUX, G. FUMAGALLI, J. GAILLARD, F. GAINOTTI, O. GILDEMEISTER, C. GOSSLING, V. GOGGI, S. GRUNENDAHL, K. HARA, S. HELLMAN, J. HRIVNAC, H. HUFNAGEL, E. HUGENTOBLER, K. HULTQVIST, E. IACOPINI, J. INCANDELA, K. JAKOBS, P. JENNI, E. KLUGE, N. KURZ, S. LAMI, P. LARICCIA, M. LEFEBVRE, L. LINSSEN, M. LIVAN, P. LUBRANO, C. MAGNEVILLE, L. MANDELLI, L. MAPELLI, M. MAZZANTI, K. MEIER, B. MERKEL, J. MEYER, M. MONIEZ, R. MONING, M. MORGANTI, L. MULLER, D. MUNDAY, M. NESSI, F. NESSITEDALDI, C. ONIONS, T. PAL, M. PARKER, G. PARROUR, F. PASTORE, E. PENNACCHIO, J. PENTNEY, M. PEPE, L. PERINI, C. PETRIDOU, P. PETROFF, H. PLOTHOWBESCH, G. POLESELLO, A. POPPLETON, K. PRETZL, M. PRIMAVERA, M. PUNTURO, J. REPELLIN, A. RIMOLDI, M. SACCHI, P. SCAMPOLI, J. SCHACHER, B. SCHMIDT, V. SIMAK, S. SINGH, V. SONDERMANN, R. SPIWOKS, S. STAPNES, C. TALAMONTI, F. TONDINI, S. TOVEY, E. TSESMELIS, G. UNAL, M. VALDATANAPPI, V. VERCESI, A. WEIDBERG, P. WELLS, T. WHITE, D. WOOD, S. WOTTON, H. ZACCONE, A. ZYLBERSTEJN. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 276:3(1992), pp. 365-374.
none
Prodotti della ricerca::01 - Articolo su periodico
116
262
Article (author)
no
J. ALITTI, G. AMBROSINI, R. ANSARI, D. AUTIERO, P. BAREYRE, I. BERTRAM, G. BLAYLOCK, P. BONAMY, K. BORER, M. BOURLIAUD, D. BUSKULIC, G. CARBONI, D. CAVALLI, V. CAVASINNI, P. CENCI, J. CHOLLET, C. CONTA, G. COSTA, F. COSTANTINI, L. COZZI, A. CRAVERO, M. CURATOLO, A. DELLACQUA, T. DELPRETE, R. DEWOLF, L. DILELLA, Y. DUCROS, G. EGAN, K. EINSWEILER, B. ESPOSITO, L. FAYARD, A. FEDERSPIEL, R. FERRARI, M. FRATERNALI, D. FROIDEVAUX, G. FUMAGALLI, J. GAILLARD, F. GAINOTTI, O. GILDEMEISTER, C. GOSSLING, V. GOGGI, S. GRUNENDAHL, K. HARA, S. HELLMAN, J. HRIVNAC, H. HUFNAGEL, E. HUGENTOBLER, K. HULTQVIST, E. IACOPINI, J. INCANDELA, K. JAKOBS, P. JENNI, E. KLUGE, N. KURZ, S. LAMI, P. LARICCIA, M. LEFEBVRE, L. LINSSEN, M. LIVAN, P. LUBRANO, C. MAGNEVILLE, L. MANDELLI, L. MAPELLI, M. MAZZANTI, K. MEIER, B. MERKEL, J. MEYER, M. MONIEZ, R. MONING, M. MORGANTI, L. MULLER, D. MUNDAY, M. NESSI, F. NESSITEDALDI, C. ONIONS, T. PAL, M. PARKER, G. PARROUR, F. PASTORE, E. PENNACCHIO, J. PENTNEY, M. PEPE, L. PERINI, C. PETRIDOU, P. PETROFF, H. PLOTHOWBESCH, G. POLESELLO, A. POPPLETON, K. PRETZL, M. PRIMAVERA, M. PUNTURO, J. REPELLIN, A. RIMOLDI, M. SACCHI, P. SCAMPOLI, J. SCHACHER, B. SCHMIDT, V. SIMAK, S. SINGH, V. SONDERMANN, R. SPIWOKS, S. STAPNES, C. TALAMONTI, F. TONDINI, S. TOVEY, E. TSESMELIS, G. UNAL, M. VALDATANAPPI, V. VERCESI, A. WEIDBERG, P. WELLS, T. WHITE, D. WOOD, S. WOTTON, H. ZACCONE, A. ZYLBERSTEJN
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