The CLEO detector

Andrews, D.; Avery, P.; Berkelman, K.; Cabenda, R.; Cassel, D. G.; Dewire, J. W.; Ehrlich, R.; Ferguson, T.; Gibbard, B.; Gilchriese, M.; Gittelman, B.; Hartill, D. L.; Herrup, D.; Herzlinger, M.; Kandaswamy, J.; Kreinick, D. L.; Larson, D.; Mistry, N. B.; Morrow, F.; Nordberg, E.; Perchonok, R.; Plunkett, R.; Shinsky, K. A.; Siemann, R.H.; Silverman, A.; Stein, P. C.; Stone, S.; Talman, R.; Weber, D.; Wilcke, R.; Bebek, C.; Haggerty, J. S.; Hempstead, M.; Izen, J. M.; Kline, R. V.; Loomis, W. A.; MacKay, W. W.; Pipkin, F. M.; Rohlf, J.; Tanenbaum, W.; Wilson, Richard; Sadoff, A. J.; Bridges, D.; Chadwick, K.; Chauveau, J.; Ganci, P.; Gentile, Thomas R.; 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.; Chang, Gee Kung; Green, J.; Imlay, R.; Lieberman, M. T.; Mueller, J.; Potter, Douglas M.; Sannes, F.; Skubic, P.; Snyder, A.; Stone, R.; Brody, A.; Chen, A.; Goldberg, M.; Horwitz, N.; Jibaly, M.; Kooy, Hanne M.; Larricia, P.; Lipari, P.; Moneti, G. C.; Hecke, H. Van; Alam, M. S.; Csorna, S. E.; Hicks, R. G.; Panvini, R. S.; Poucher, J. S.

doi:10.1016/0167-5087(83)90556-2

Cited by 108 publications

(11 citation statements)

References 11 publications

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“…The broad peak at high mass is very different from the signal in Fig. 9; it is well described by a Gaus- (32) where N4s is the number of T(4S) events in the data. sample, obtained from The number of events is normalized to a product branching fraction of 0.14'.…”

Section: T(4s)mentioning

confidence: 89%

Measurements of semileptonic branching fractions of B mesons at the ϒ(4S) resonance

Henderson¹,

Kinoshita²,

Pipkin³

et al. 1992

Phys. Rev. D

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Section: T(4s)mentioning

confidence: 89%

Measurements of semileptonic branching fractions of B mesons at the ϒ(4S) resonance

Henderson¹,

Kinoshita²,

Pipkin³

et al. 1992

Phys. Rev. D

Self Cite

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“…Since then, the CLEO collaboration has conducted studies of b, c, and physics in e + e − interactions near 10 GeV [565]. Successive detector upgrades have been performed in parallel with luminosity improvements to CESR, which has delivered over 9 fb −1 integrated luminosity.…”

Section: Cleomentioning

confidence: 98%

Glueballs, hybrids, multiquarks

2007

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Glueballs, hybrids and multiquark states are predicted as bound states in models guided by quantum chromo dynamics (QCD), by QCD sum rules or QCD on a lattice. Estimates for the (scalar) glueball ground state are in the mass range from 1000 to 1800 MeV, followed by a tensor and a pseudoscalar glueball at higher mass. Experiments have reported evidence for an abundance of meson resonances with 0 −+ , 0 ++ and 2 ++ quantum numbers. In particular, the sector of scalar mesons is full of surprises starting from the elusive and mesons. The a 0 (980) and f 0 (980), discussed extensively in the literature, are reviewed with emphasis on their Janus-like appearance as KK molecules, tetraquark states or qq mesons. Most exciting is the possibility that the three mesons f 0 (1370), f 0 (1500), and f 0 (1710) might reflect the appearance of a scalar glueball in the world of quarkonia. However, the existence of f 0 (1370) is not beyond doubt and there is evidence that both f 0 (1500) and f 0 (1710) are flavour octet states, possibly in a tetraquark composition. We suggest a scheme in which the scalar glueball is dissolved into the wide background into which all scalar flavour-singlet mesons collapse.There is an abundance of meson resonances with the quantum numbers of the . Three states are reported below 1.5 GeV/c 2 whereas quark models expect only one, perhaps two. One of these states, (1440), was the prime glueball candidate for a long time. We show that (1440) is the first radial excitation of the meson.Hybrids may have exotic quantum numbers which are not accessible by qq mesons. There are several claims for J P C = 1 −+ exotics, some of them with properties as predicted from the flux tube model interpreting the quark-antiquark binding by a gluon string. The evidence for these states depends partly on the assumption that meson-meson interactions are dominated by s-channel resonances. Hybrids with non-exotic quantum numbers should appear as additional states. Light-quark mesons exhibit a spectrum of (squared) masses which are proportional to the sum of orbital angular momentum and radial quantum numbers. Two states do not fall under this classification. They are discussed as hybrid candidates.The concept of multiquark states has received revived interest due to new resonances in the spectrum of states with open and hidden charm. The new states are surprisingly narrow and their masses and their decay modes often do not agree with simple quark-model expectations.Lattice gauge theories have made strong claims that glueballs and hybrids should appear in the meson spectrum. However, the existence of a scalar glueball, at least with a reasonable width, is highly questionable. It is possible that hybrids will turn up in complex multibody final states even though so far, no convincing case has been made for them by experimental data. Lattice gauge theories fail to identify the nonet of scalar mesons. Thus, at the present status of approximations, lattice gauge theories seem not to provide a trustworthy guide into unknown territory ...

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“…The following describes the differences when estimating the feed-in background, N feed , in theB 0 system. Unlike the Λ 0 b system, many decays of b and c mesons have been measured by other experiments [30,31,32,33], and serve as inputs to the evtgen decay package. In addition, evtgen also includes estimates of branching fractions for decay modes which have not yet been measured.…”

Section: Compositions Of the Inclusive Semileptonic Datamentioning

confidence: 99%

“…For all other particles in the event, this is done by the pythia program. The evtgen program uses the dynamics from a full matrix-element calculation and is tuned to measurements, mainly results from experiments at the Υ (4S) resonance [30,31,32,33] where the decay models for theB 0 and the B − have been demonstrated to match data. As a full theoretical model for Λ After an event has been simulated at the generator level, it is processed with a full simulation of the CDF II detector and trigger.…”

Section: A Production and Decay Of B Hadronsmentioning

confidence: 99%

First measurement of the ratio of branching fractionsB(Λb0→Λc+μ−ν¯
Aaltonen¹,
Adelman²,
Akimoto³
et al. 2009
Phys. Rev. D
29
1
38
0
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The CLEO detector

Cited by 108 publications

References 11 publications

Measurements of semileptonic branching fractions of B mesons at the ϒ(4S) resonance

Measurements of semileptonic branching fractions of B mesons at the ϒ(4S) resonance

Glueballs, hybrids, multiquarks

First measurement of the ratio of branching fractionsB(Λb0→Λc+μ−ν¯
Aaltonen¹,
Adelman²,
Akimoto³
et al. 2009
Phys. Rev. D
29
1
38
0
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The CLEO detector

Cited by 108 publications

References 11 publications

Measurements of semileptonic branching fractions of B mesons at the ϒ(4S) resonance

Measurements of semileptonic branching fractions of B mesons at the ϒ(4S) resonance

Glueballs, hybrids, multiquarks

First measurement of the ratio of branching fractionsB(Λb0→Λc+μ−ν¯Aaltonen1, Adelman2, Akimoto3 et al. 2009Phys. Rev. D291380View full textAdd to dashboardCite

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First measurement of the ratio of branching fractionsB(Λb0→Λc+μ−ν¯
Aaltonen¹,
Adelman²,
Akimoto³
et al. 2009
Phys. Rev. D
29
1
38
0
View full text Add to dashboard Cite