Observation of a Fourth Upsilon State in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>e</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow><mml:mrow><mml:msup><mml:mrow><mml:mi>e</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>Annihilations

Andrews, D.; Berkelman, K.; Cabenda, R.; Cassel, D. G.; Dewire, J. W.; Ehrlich, R.; Ferguson, T.; Gentile, Thomas R.; Gilchriese, M.; Gittelman, B.; Hartill, D. L.; Herrup, D.; Herzlinger, M.; Kreinick, D. L.; Mistry, N. B.; Nordberg, E.; Perchonok, R.; Plunkett, R.; Shinsky, K. A.; Siemann, R.H.; Silverman, A.; Stein, P. C.; Stone, S.; Talman, R.; Thonemann, H. G.; Weber, D.; Bebek, C.; Haggerty, J. S.; Izen, J. M.; Loomis, W. A.; Pipkin, F. M.; Rohlf, J.; Tanenbaum, W.; Wilson, Richard; Sadoff, A. J.; Bridges, D.; Chadwick, K.; Ganci, P.; Kagan, H.; Kass, R.; Lobkowicz, F.; Melissinos, A. C.; Olsen, S. L.; Poling, R.; Rosenfeld, C.; Rucinski, G.; Thorndike, E. H.; Warren, G.; Bechis, D.; Mueller, J.; Potter, Douglas M.; Sannes, F.; Skubic, P.; Stone, R.; Brody, A.; Chen, A.; Goldberg, M.; Horwitz, N.; Kandaswamy, J.; Kooy, Hanne M.; Lariccia, P.; Moneti, G. C.; Alam, M. S.; Csorna, S. E.; Panvini, R. S.; Poucher, J. S.

doi:10.1103/physrevlett.45.219

Cited by 120 publications

(3 citation statements)

References 16 publications

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“…(2) The Cornell e + e − ring CESR began operating in 1979, 23 reaching a fourth Υ(4S) peak and finding it broader than the first three. This indicated that the meson pair threshold lay below M [Υ(4S)]= 10.58 GeV/c 2 .…”

Section: Dilepton Spectroscopymentioning

confidence: 99%

CP VIOLATION IN B DECAYS

Rosner

2001

Flavor Physics for the Millennium

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The role of B decays in the study of CP violation is reviewed. We treat the interactions and spectroscopy of the b quark and then introduce CP violation in B meson decays, including time-dependences, decays to CP eigenstates and non-eigenstates, and flavor tagging. Additional topics include studies of strange B's, decays to pairs of light pseudoscalar mesons, and the roles of gluonic and electroweak penguin diagrams, and final-state interactions.

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Section: Dilepton Spectroscopymentioning

confidence: 99%

CP VIOLATION IN B DECAYS

Rosner

2001

Flavor Physics for the Millennium

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“…[7] The discovery of the B mesons in 1980 and their study occurred ( and continues) at the T( 4S) resonance. [8,9] The Standartl Model says the B mesons consist of a bound b or b quark with a lighter partner. All types of B mesons should be produced in p-p collisions though some states such as B. and Be have yet to be seen at hadron colliders.…”

mentioning

confidence: 99%

Measuring the Inclusive Central Muon Cross Section in Proton - Antiproton Collisions at 1.8 TeV

Huffman

1992

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“…For that purpose, it was necessary to study a b-flavored meson, where the heavy mass of the b quark dominates the dynamics of the meson10. In 1980 the CESR experiment observed another upsilon resonance [28,29], Υ(4S), which is just 20 MeV above the mass threshold to produce two of the lightest b-flavored particle, the B meson. The family of Υ resonances as measured by the CLEO collaboration is presented in Fig.…”

Section: Phenomenology Of B Mesonsmentioning

confidence: 99%

Measurement of B-> pi pi l nu with Full Hadronic Reconstruction at Belle

Barrera¹,

Augusto²

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This thesis presents an analysis of the exclusive B → π + π − ν decay, where represents an electron or a muon. The analysis uses the complete Υ(4S) data sample collected by the Belle detector, corresponding to 711 fb −1. The events are selected by fully reconstructing one B meson into hadronic decay modes, consequently the properties of the other B meson, "the signal B", can be inferred via conservation laws. The branching ratio is extracted by using an extended binned maximum likelihood method and measured to be. This result is the first reported measurement of this decay. The dominant resonance in the dipion mass spectrum is the ρ 0 meson, observed with a branching ratio of B(B + → ρ 0 + ν ) = (1.71 ± 0.16 stat ± 0.10 syst ) × 10 −4. From this measurement, the magnitude of the CKM matrix element V ub is obtained as |V ub | = (3.56 ± 0.17 stat ± 0.10 syst, in agreement with the most precise measurement of this value from global fits to the B → π ν channel. Another resonance is reported with a product of branching ratios, B(B, with a 2.2σ statistical significance without taking into account systematic uncertainties.

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Observation of a Fourth Upsilon State ine+e−Annihilations

Cited by 120 publications

References 16 publications

CP VIOLATION IN B DECAYS

CP VIOLATION IN B DECAYS

Measuring the Inclusive Central Muon Cross Section in Proton - Antiproton Collisions at 1.8 TeV

Measurement of B-> pi pi l nu with Full Hadronic Reconstruction at Belle

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