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  • 1
    Electronic Resource
    Electronic Resource
    An experimental study of the discharge coefficient of pipe perforations (1995)
    Springer
    Experiments in fluids 19 (1995), S. 348-352 
    Details
    ISSN: 1432-1114
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Experiments were conducted to study the variation of the pressure loss coefficient of pipe perforations with geometrical parameters of the perforations and a Reynolds number based on the hydraulic diameter of an orifice representing the perforations. The experimental data are used to develop an empirical relationship between the head loss across the perforations and the geometrical and hydraulic parameters related to the perforations which was seen to give better predictions when the perforations are not very closely spaced. The experimental results reported herein correspond to the pipes of small perforated length, with downstream end of the pipe closed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00203420
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  • 2
    Electronic Resource
    Electronic Resource
    Top quark search beyond theW mass at tevatron collider energy (1988)
    Springer
    The European physical journal 39 (1988), S. 417-421 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The upgraded Tevatron collider, with an expected integrated luminosity of 100 pb−1, shall push up the top quark discovery limit from 80 to 200 GeV. The distinctive signature of the signal vis-a-vis background are analysed for this mass range of top.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01548292
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  • 3
    Electronic Resource
    Electronic Resource
    Intrinsic charm and photon-gluon fusion contributions to muoproduction of charm (1981)
    Springer
    The European physical journal 10 (1981), S. 333-340 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The charm muoproduction data has been analysed in terms of the intrinsic charm and the γG fusion contributions, in order to estimate the intrinsic charm content of the nucleon. Unfortunately the result is sensitive to the choices of fragmentation function and the energy scale of αs, that one makes for the fusion contribution. Nonetheless, there is one solution with a hard intrinsic charm spectrum—very similar to that suggested by the recent hadroproduction data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01546205
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  • 4
    Electronic Resource
    Electronic Resource
    A model for like sign dimuons-detailed analysis (1984)
    Springer
    The European physical journal 22 (1984), S. 39-47 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A detailed account of a model for like sign dimuons, recently proposed by us, is presented and compared with all the like sign dimuon data available. It can naturally account for the rate and all the kinematic features of these events, as given by the CHARM, CFRR and CFNRR experiments. The predicted event distributions are shown for the CHARM experiment, since it has sufficient number of events for a meaningful comparison. The implication of the model for other processes like neutrino induced trimuons and charm hadroproduction are also discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01577562
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  • 5
    Electronic Resource
    Electronic Resource
    Top flavour signal in the $$p\bar p$$ collider events—A detailed analysis with flavour creation and excitation models (1984)
    Springer
    The European physical journal 21 (1984), S. 333-343 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The single jet electron events recently observed by the UA1 collaboration at the protonantiproton collider are analysed in terms of top flavour production using both flavour creation and excitation mechanisms. A top particle of mass ∼ 35 GeV can naturally account for both the event topology (isolated electron coming back to back with a jet) and the neutrinop T distribution relative to the electron, irrespective of the production mechanism. Each of the two production mechanisms gives an event rate any where between the observed rate and an order of magnitude lower, depending on the model parameters. They can be easily distinguished, however, by studying the jet coming back to back with the electron. It is predicted to be a fat jet containing a top particle for flavour creation and an ordinary narrow jet for flavour excitation. A detailed list of other predictions is given, which can be tested with the available or the forthcoming data. Some of these provide further tests of the top signal irrespective of the production mechanism, while others can discriminate between the two mechanisms as well as between different models for flavour excitation. It is also shown that not only are the available event characteristics naturally explained by top, but they cannot be explained by any other mechanism explored so far.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01581597
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  • 6
    Electronic Resource
    Electronic Resource
    A model for central charm production inpp collision (1984)
    Springer
    The European physical journal 22 (1984), S. 149-154 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The major part of central charm production inpp collision is proposed to arise from a charm $$(D\bar D)$$ component in the hadronization of the scattered quark. We use the charm hadronization model previously developed to explain the like sign dimuon events in neutrino scattering. Thus we have a parameter free prediction for the central charm crosssection relative to thepp total cross-section. The predicted cross-section agrees with data in magnitude as well as in its energy, Feynmanx andp T dependence.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01572163
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  • 7
    Electronic Resource
    Electronic Resource
    Weak versus strong production of top flavor at the proton-antiproton collider (1984)
    Springer
    The European physical journal 24 (1984), S. 271-275 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The weak production of a top particle of mass ≅35 GeV is seen to be an order of magnitude lower than the most conservative estimate of strong production, and two orders of magnitude lower than the rate required to explain the UA1 single jet electron events. All the kinematic distributions are very similar for the two production mechanisms. Detailed comparison of the rate and kinematic distributions are shown, for the decay electron (muon)p T cut of 10 and 15 GeV.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01410365
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  • 8
    Electronic Resource
    Electronic Resource
    Scale breaking at largex-intrinsic charm or higher twist? (1982)
    Springer
    The European physical journal 15 (1982), S. 39-49 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A hard intrinsic charm component of nucleon, as suggested by Brodsky et al., is first shown to be consistent with the available μN→μμX data, assuming a reasonable threshold factor. Such a hard charm contribution is then included in a QCD analysis of the structure function data at largex(〉0.3), where the gluon contribution to the evolution equation can be safely neglected. Whereas a pure QCD fit results in a Λ going down significantly with increasingQ 2, inclusion of the hard charm contribution results in a consistent description of all data with a common Λ≃300–400 MeV. Alternatively a consistent QCD fit to these data can be obtained by including a higher twist contribution, in which case the common Λ has a much smaller value ≃100 MeV.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01573424
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  • 9
    Electronic Resource
    Electronic Resource
    Gluino and squark search at Tevatron collider energies (1986)
    Springer
    The European physical journal 32 (1986), S. 615-618 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Event rates and distributions for high mass gluinos and squarks are computed at Tevatron collider energies, imposing experimentally realisticP T cuts. Gluino and squark masses can be probed up to 200 GeV at $$\sqrt s = 2 TeV$$ , and up to about 150 GeV at $$\sqrt s = 1.6 TeV$$ with the supersymmetric signal being much more enhanced relative to the standard model background than at CERN $$\bar p$$ energies. If the CERN UA1 missing-p T events are indeed indicative for the existence of gluinos and/or squarks with masses of about 50–70 GeV, then the Fermilab collider experiments should easily confirm the expected huge supersymmetric signals.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01550787
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  • 10
    Electronic Resource
    Electronic Resource
    Distinguishing the Top production mechanisms at the $$\bar pp$$ collider (1985)
    Springer
    The European physical journal 29 (1985), S. 83-87 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The kinematic features of the six isolated lepton plus 2-jet events, recently reported by the UA1 collaboration, can be described equally well by the weak and the strong production mechanisms of top quark. The relative size of the two contributions can be estimated, however, from the event rate as well as the relative number of 2 to 3 jet events. Both suggest that at least half of the 2-jet events arise from strong production.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01571384
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