1994 running experience with the L3 Silicon Microvertex Detector

Acciarri, M.; Ádám, A.; Адриани, О.; Ahlen, S. P.; Alcaraz, J.; Ambrosi, G.; Andreev, V.; Babucci, E.; Baksay, L.; Basçhirotto, A.; Battiston, R.; Bay, A.; Bencze, G.; Bertucci, B.; Biasini, M.; Bilei, G. M.; Bobbink, G. J.; Brooks, M. L.; Burger, W. J.; Busenitz, J.; Camps, C.; Caria, M.; Castellini, G.; Castello, R.; Checcucci, B.; Chen, A.; Choumilov, E.; Choutko, V.; Coan, T. E.; Commichau, V.; DiBitonto, D.; Ding, DJ; Dominguez, A.; Duinker, P.; Easo, S.; Extermann, P.; Fiandrini, E.; Gabbanini, A.; Goldstein, J.; Gougas, A.; Hangarter, K.; Hauviller, C.; Hervé, A.; Hou, S.; Josa, M. I.; Kapustinsky, J.; Kim, D.; Kinnison, W. W.; Kornis, J.; Krastev, V.R.; Ladrón, P.; Landi, G.; Lebeau, M.; Lecomte, P.; Lee, D.M.; Leiste, R.; Lejeune, Emma; Levtchenko, P.; Lin, W.; Lohmann, W.; Marín, A.; Mills, G. B.; Nowak, H.; Passaleva, G.; Paul, T.; Pauluzzi, M.; Pensotti, S.; Perrin, E.; Pinto, J. C.; Pohl, M.; Produit, N.; Rancoita, P.G.; Rattaggi, M.; Sachwitz, M.; Santocchia, A.; Schmitz, P.; Schöneich, B.; Servoli, L.; Sopczak, A.; Tesi, M.; Tonisch, F.; Töth, J.; Trowitzsch, G.; Tuchscherer, H.; Hoek, M.; Viertel, G.; Vogt, H.; Weill, R.; Xu, J.; Yeh, S.C.; Zhou, B.; Zilizi, G.

doi:10.1016/s0920-5632(95)80047-6

Cited by 8 publications

(21 citation statements)

References 5 publications

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“…As the historic name suggests, the relative depletion between the qq and qg jets was expected to have a non-perturbative origin [67]; later, assuming LPHD, a perturbative explanation was found [60]. To describe the Z 0 data [43,68,69] it is necessary to employ a coherent shower with an approximately equal contribution coming from the non-perturbative hadronization model (but see [61]). A second classic measurement [70], proposed in [71], is the relative depletion between the qq pair in qqg and qqγ events [69,72,73].…”

Section: The String Effectmentioning

confidence: 99%

“…To describe the Z 0 data [43,68,69] it is necessary to employ a coherent shower with an approximately equal contribution coming from the non-perturbative hadronization model (but see [61]). A second classic measurement [70], proposed in [71], is the relative depletion between the qq pair in qqg and qqγ events [69,72,73]. The azimuthal angular dependence of particle flow in qqg events has also been studied [74].…”

Section: The String Effectmentioning

confidence: 99%

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Hadronization in decay

Knowles

Lafferty

1997

J. Phys. G: Nucl. Part. Phys.

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Abstract. The confinement transition from the quark and gluon degrees of freedom appropriate in perturbation theory to the hadrons observed by real world experiments is poorly understood. In this strongly interacting transition regime we presently rely on models, which to varying degrees reflect possible scenarios for the QCD dynamics. Because of the absence of beam and target remnants, and the clean experimental conditions and high event rates, e + e − annihilation to hadrons at the Z 0 provides a unique laboratory, both experimentally and theoretically, for the study of parton hadronization. This review discusses current theoretical understanding of the hadronization of partons, with particular emphasis on models of the nonperturbative phase, as implemented in Monte Carlo simulation programs. Experimental results at LEP and SLC are summarised and considered in the light of the models. Suggestions are given for further measurements which could help to produce more progress in understanding hadronization.

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Section: The String Effectmentioning

confidence: 99%

Section: The String Effectmentioning

confidence: 99%

Hadronization in decay

Knowles

Lafferty

1997

J. Phys. G: Nucl. Part. Phys.

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“…The experimental bounds are as follows. L3 has compared [24] their measurements of both the lepton and missing energy spectra in semileptonic b → c decays with a number of different hypotheses, and have excluded both the (…”

Section: Forms Of V Rmentioning

confidence: 99%

Breakdown of global fits to the Wilson coefficients in rareBdecays: A left-right model example

Rizzo

1998

Phys. Rev. D

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In the standard model and many of its extensions, it is well known that all of the observables associated with the rare decays b→s␥ and b→sl ϩ l Ϫ can be expressed in terms of the three Wilson coefficients C 7L,9L,10L (ϳm b ), together with several universal kinematic functions. In particular, it has been shown that the numerical values of these coefficients can be uniquely extracted by a three-parameter global fit to data obtainable at future B factories given sufficient integrated luminosity. In this paper we examine if such global fits are also sensitive to new operators beyond those which correspond to the above coefficients, i.e., whether it is possible that new operators can be of sufficient importance for the three-parameter fit to fail and for this to be experimentally observable. Using the left-right symmetric model as an example of a scenario with an extended operator basis, we demonstrate via Monte Carlo techniques that such a possibility can indeed be realized. In some sense this potential failure of the global fit approach can actually be one of its greatest successes in identifying the existence of new physics.

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“…The possibility of a presence of such non-V − A structures has been most extensively explored for the muon decay, while for the b decays so far only the maximal case of a (V + A) × (V − A) structure of the four fermions interaction is excluded experimentally [15] and another extreme of a purely vector b → c current is clearly excluded by the very fact of non-zero amplitude of the decay B → D * lν at zero recoil. A small value of g R /g L is not ruled out as discussed in ref.…”

Section: One Obtainsmentioning

confidence: 99%

Probe new physics in leptonic Bc decays at CERN LHC

Jin

Yang

1997

Physics Letters B

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With respect to large samples of B c mesons expected to be produced at CERN Large Hadron Collider(LHC) and the large branching ratios Br(B c → τν) and Br(B c → µν), we suggest that B c purely leptonic decays could offer an unique probe of the standard model and its extensions such as two Higgs doublet models and models involving supersymmetry, and also the structure of charged weak currents. PACS numbers 13.20.He 12.15.-y 12.60.Fr *

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1994 running experience with the L3 Silicon Microvertex Detector

Cited by 8 publications

References 5 publications

Hadronization in decay

Hadronization in decay

Breakdown of global fits to the Wilson coefficients in rareBdecays: A left-right model example

Probe new physics in leptonic Bc decays at CERN LHC

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