A novel measurement of the muon capture rate in liquid hydrogen by the lifetime technique

Bardin, G.; Duclos, J.; Magnon, A.; Martino, J.; Richter, A.; Zavattini, E.; Bertin, A.; Piccinini, M.; Vitale, A.; Measday, D.F.

doi:10.1016/0375-9474(81)90416-4

Cited by 96 publications

(36 citation statements)

References 12 publications

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“…distortion arising from finite resolving time and electron pulse pile-up. Bardin et al (1981a) found the main effect of pulse pile-up is an additional time component with an effective lifetime τ /2. They corrected for this effect by measuring lifetimes at different rates and extrapolating to zero.…”

Section: Lifetime Methodsmentioning

confidence: 96%

“…The lifetime difference thus determines the capture rate. This approach was used at Saclay to determine the µ capture rate in liquid H 2 (Bardin et al, 1981a) and liquid D 2 (Bardin et al, 1986).…”

Section: Lifetime Methodsmentioning

confidence: 99%

“…The earlier hydrogen experiment used τ + = 2197.148±0.066 ns (Bardin et al, 1981a), though this was later updated by Martino (1982Martino ( , 1984. The later deuterium measurement (Bardin et al, 1986) used τ + = 2197.03 ± 0.04 ns.…”

Section: Lifetime Methodsmentioning

confidence: 99%

“…They used the world average for comparison because their measured value for τ + , although consistent with the world average, had a larger uncertainty. Since the publication of Bardin et al (1981a) the world average of τ + has changed from 2197.15 ± 0.07 ns to 2197.03 ± 0.04 ns (Particle Data Group , 2000). In determining g p for Table II we decided it best to update the µ + lifetime in extracting the µ − capture rate, 7 which now becomes 435 ± 17s −1 instead of 460 ± 20s −1 .…”

Section: Refmentioning

confidence: 99%

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Induced pseudoscalar coupling of the proton weak interaction

2003

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The induced pseudoscalar coupling gp is the least well known of the weak coupling constants of the proton's charged-current interaction. Its size is dictated by chiral symmetry arguments, and its measurement represents an important test of quantum chromodynamics at low energies. During the past decade a large body of new data relevant to the coupling gp has been accumulated. This data includes measurements of radiative and non radiative muon capture on targets ranging from hydrogen and few-nucleon systems to complex nuclei. Herein the authors review the theoretical underpinnings of gp, the experimental studies of gp, and the procedures and uncertainties in extracting the coupling from data. Current puzzles are highlighted and future opportunities are discussed.

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Section: Lifetime Methodsmentioning

confidence: 96%

Section: Lifetime Methodsmentioning

confidence: 99%

Section: Lifetime Methodsmentioning

confidence: 99%

Section: Refmentioning

confidence: 99%

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Induced pseudoscalar coupling of the proton weak interaction

2003

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“…[36][37][38][39] Here a and b are hydrogen isotope nuclei ground state are needed for the description of the kinetics p, d, and t; am and bm are muonic atoms pm, dm, and tm; of muon catalyzed fusion, 4,5 diffusion experiments, 6,7 mu-F and F denote the total spins of the hyperfine states onic processes in solid D 2 /T 2 mixtures, 8,9 m-capture by of a muonic atom am before and after collision. Real protons in liquid hydrogen, 10 etc. experiments, however, deal with molecular targets, and so This atlas completes a program over many years the method developed was improved to take into account of calculations of cross sections for muonic scattering electron screening and the internal structure of the hydroprocesses in hydrogen isotope mixtures.…”

Section: Introductionmentioning

confidence: 99%