Precision measurement of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mrow /><mml:mn>6</mml:mn></mml:msup></mml:math>He half-life and the weak axial current in nuclei

Knecht, A.; Hong, R.; Zumwalt, David; Delbridge, B. G.; Garcı́a, A.; Müller, P.; Swanson, H. E.; Towner, I.S.; Utsuno, S.; Williams, W. D.; Wrede, C.

doi:10.1103/physrevc.86.035506

Cited by 21 publications

(29 citation statements)

References 58 publications

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“…The measured extracted rate of atomic 6 He available at a low background experimental area was about 10 9 atoms/s. The source has been used for a high precision measurement of the 6 He half-life [78], with the atoms confined in a cylindrical storage volume. The physics plans include a measurement of a and of the Fierz interference term [77].…”

Section: The βν Angular Correlation Amentioning

confidence: 99%

Prospects for precision measurements in nuclear decay in the LHC era

2013

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Precision measurements in nuclear β decay offer a sensitive window to search for new physics beyond the standard electroweak model. Searches for new physics are also a strong motivation for experiments carried out at the high energy frontier. It is instructive to confront results from the low energy and the high energy frontiers in order to look for possible complementarities. This paper reviews the constraints on new physics obtained from nuclear and neutron decays and compares them to those from other semi-leptonic processes and from the LHC. The sensitivity requirements of new precision experiments in β decay, to impact the search for new physics at the light of current and projected LHC results, are updated. Experimental developments in nuclear and neutron β decay are discussed with emphasis on their projected goals to improve the limits on exotic weak couplings.

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Section: The βν Angular Correlation Amentioning

confidence: 99%

Prospects for precision measurements in nuclear decay in the LHC era

2013

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“…As was presented in the introduction, the β spectrum of unique first forbidden decays is sensitive to a. As a test case, we decided to measure the decay of 16 N, which has a spin parity of 2 − . 28% of the time, It decays to the 0 + ground state of 16 O with Q-value of 10.4 MeV.…”

Section: β Spectrum Of 16 Nmentioning

confidence: 99%

“…As a test case, we decided to measure the decay of 16 N, which has a spin parity of 2 − . 28% of the time, It decays to the 0 + ground state of 16 O with Q-value of 10.4 MeV. Other branches of the decay are pure GT decays to 1 − and 3 − with Q-values 3.3 and 4.1 MeV, respectively.…”

Section: β Spectrum Of 16 Nmentioning

confidence: 99%

Weak interaction studies at SARAF

et al. 2018

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We review the current status of the radioisotopes program at the Soreq Applied Research Accelerator Facility (SARAF), where we utilize an electrostatic-ion-beam trap and a magneto-optical trap for studying the nuclear β -decay from trapped radioactive atoms and ions. The differential energy spectra of β 's and recoil ions emerging from the decay is sensitive to beyond standard model interactions and is complementary to high energy searches. The completed facility SARAF-II will be one of the world's most powerful deuteron, proton and fast neutron sources, producing light radioactive isotopes in unprecedented amounts, needed for obtaining enough statistics for a high precision measurement.

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“…We performed a careful analysis of possible systematic effects presented in Refs. [12,13]. The final result for the 6 He half-life is:…”

Section: Measurement Of the 6 He Half-lifementioning

confidence: 99%

Weak interaction studies with [sup 6]He

Knecht

Alexander

Bagdasarova

et al. 2013

AIP Conference Proceedings

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The 6 He nucleus is an ideal candidate to study the weak interaction. To this end we have built a high-intensity source of 6 He delivering ∼10 10 atoms/s to experiments. Taking full advantage of that available intensity we have performed a high-precision measurement of the 6 He half-life that directly probes the axial part of the nuclear Hamiltonian. Currently, we are preparing a measurement of the beta-neutrino angular correlation in 6 He beta decay that will allow to search for new physics beyond the Standard Model in the form of tensor currents.

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Precision measurement of the6He half-life and the weak axial current in nuclei

Cited by 21 publications

References 58 publications

Prospects for precision measurements in nuclear decay in the LHC era

Prospects for precision measurements in nuclear decay in the LHC era

Weak interaction studies at SARAF

Weak interaction studies with [sup 6]He

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