Discovery of the B{sub C} meson

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We report on the first observation of the bottom-charm mesons B{sub c} through the decay mode B{sub c}{sup {+-}} {yields} J/{psi}l{sup {+-}}{nu} in 1.8 TeV p{anti p} collisions using the CDF detector at the Fermilab Tevatron. A fit of background and signal contributions to the observed J/{psi}l mass distribution yielded 20.4{sup +6.2}{sub -5.5} events from B{sub c} mesons. A fit to the same distribution with background alone was rejected at the level of 4.8 standard deviations. We measured the B{sub c}{sup +} mass to be 6.40{+-}0.39{+-}0.13 GeV/c{sup 2} and the B{sub c}{sup +} lifetime to be 0.46{sup 0.18}{sub -0.16}(stat.){+-}0.03(syst.) ps. ... continued below

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12 p.; Other: FDE: PDF; PL:

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Singh, P.P July 1, 1998.

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We report on the first observation of the bottom-charm mesons B{sub c} through the decay mode B{sub c}{sup {+-}} {yields} J/{psi}l{sup {+-}}{nu} in 1.8 TeV p{anti p} collisions using the CDF detector at the Fermilab Tevatron. A fit of background and signal contributions to the observed J/{psi}l mass distribution yielded 20.4{sup +6.2}{sub -5.5} events from B{sub c} mesons. A fit to the same distribution with background alone was rejected at the level of 4.8 standard deviations. We measured the B{sub c}{sup +} mass to be 6.40{+-}0.39{+-}0.13 GeV/c{sup 2} and the B{sub c}{sup +} lifetime to be 0.46{sup 0.18}{sub -0.16}(stat.){+-}0.03(syst.) ps. The measured production cross section times branching ratio for B{sub c}{sup +} {yields} J/{psi}l{sup +}{nu} relative to that for B{sup +} {yields} J/{psi}K{sup +} is 0.132{sup 0.041}{sub -0.037}(stat.){+-}0.031(syst.){sup +0.032}{sub -0.020}(lifetime).

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12 p.; Other: FDE: PDF; PL:

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INIS; OSTI as DE98057346

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  • 12. Les Rencontres de Physique de la Vallee D`Aosta: results and perspectives in particle physics, La Thuile (Italy), 1-7 Mar 1998

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  • Other: DE98057346
  • Report No.: FNAL/C--98/209-E
  • Report No.: CONF-9803100--
  • Grant Number: AC02-76CH03000
  • Office of Scientific & Technical Information Report Number: 672857
  • Archival Resource Key: ark:/67531/metadc709108

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  • July 1, 1998

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  • Sept. 12, 2015, 6:31 a.m.

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  • Aug. 23, 2016, 3:30 p.m.

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Singh, P.P. Discovery of the B{sub C} meson, article, July 1, 1998; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc709108/: accessed December 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.