Measurement of electron and pion cascades in a lead-acrylic scintillator shower detector

Abshire, G.; Adams, M. R.; Brown, C. N.; Crandall, E.; Goldberger, Joshua E.; Grannis, P. D.; Stekas, J.; Donaldson, G.; Gordon, Hamish; Morris, G.R.; Cormell, L.

doi:10.1016/0029-554x(79)90434-8

Cited by 15 publications

(3 citation statements)

References 10 publications

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“…The principal difference is the amount of deposited energy. Figure 11.7 shows the total energy deposited in a leadscintillator detector by 4-Ge V / c electrons and pions [14]. The electron distribution is peaked at the beam energy, showing that all its energy was contained in the calorimeter.…”

Section: Fraction Of Deposited Chargementioning

confidence: 99%

Sampling calorimeters

2023

Introduction to Experimental Particle Physics

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Section: Fraction Of Deposited Chargementioning

confidence: 99%

Sampling calorimeters

2023

Introduction to Experimental Particle Physics

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“…The experiment, performed at the Brookhaven National Laboratory's Alternating Gradient Synchrotron, employed a two-magnet spectrometer system situated in a 5.8-GeV/c unseparated beam of approximately 5xl0 6 K + and a mixture of 1x10 s x + and protons per machine pulse of about 1-s duration. The detector, previously described in Ref.…”

mentioning

confidence: 99%

“…6 It presented a total of 11.4 radiation lengths to incoming particles, and was segmented into two vertical, 24 horizontal, and three longitudinal sections. With the pulse height of every cell recorded for each event, the shower evolution for each track could be observed.…”

mentioning

confidence: 99%

Search for the DecayK+→π+μ+e

et al. 1988

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We report here on a search for the lepton-family-number-violating decay K + -• x + fi + e ~. We found no evidence for this decay mode and we establish an upper limit on its branching ratio of 1.1 x 10 ~9 at the 90% confidence level (C.L.) for a uniform phase-space decay distribution. We also use this result to establish an upper limit for the branching ratio of the decay 7r°-• JJ, +e ~ of 7.8 x 10 ~8 (90% C.L.).PACS numbers: 13.20. Eb, 12.15.Mm, 13.20.Cz The level to which lepton-family number (LFN) is conserved is one of the outstanding issues of particle physics. Conservation of this quantity was hypothesized in the 1950's 1 and is now incorporated into the standard model. More recently, however, theoretical models addressing issues not resolved by the standard model have suggested that LFN may be violated at levels observable with present technology. 2,3 For many of these models, the decays ATj?->p, e and K + -• n + /i + e ~ are good candidates for such observations. For example, while violating LFN, these decays conserve "generation" number, as defined by Cahn and Harari, 3 and thus may be less inhibited than other processes, e.g., //-• eee, p 4 A -+ e + A, or ft-• ey. New measurements of K®-• jxe have recently been published. 4 We are reporting in this paper the first results of a new search for the decay

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