About: Precision measurements of the Co-60 beta-asymmetry parameter in search for tensor currents in weak interactions

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About: Precision measurements of the Co-60 beta-asymmetry parameter in search for tensor currents in weak interactions Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The beta-asymmetry parameter (A) over tilde for the Gamow-Teller decay of Co-60 was measured by polarizing the radioactive nuclei with the brute-force low-temperature nuclear-orientation method. The Co-60 activity was cooled down to milliKelvin temperatures in a He-3-He-4 dilution refrigerator in an external 13-T magnetic field. The beta particles were observed by a 500-mu m-thick Si PIN diode operating at a temperature of about 10 K in a magnetic field of 0.6 T. Extensive GEANT4 Monte Carlo simulations were performed to gain control over the systematic effects. Our result, (A) over tilde = -1.014(12)(stat)(16)(syst), is in agreement with the standard-model value of -0.987(9), which includes recoil-order corrections that were addressed for the first time for this isotope. Further, it enables limits to be placed on possible tensor-type charged weak currents, as well as other physics beyond the standard model. The beta-asymmetry parameter (A) over tilde for the Gamow-Teller decay of Co-60 was measured by polarizing the radioactive nuclei with the brute-force low-temperature nuclear-orientation method. The Co-60 activity was cooled down to milliKelvin temperatures in a He-3-He-4 dilution refrigerator in an external 13-T magnetic field. The beta particles were observed by a 500-mu m-thick Si PIN diode operating at a temperature of about 10 K in a magnetic field of 0.6 T. Extensive GEANT4 Monte Carlo simulations were performed to gain control over the systematic effects. Our result, (A) over tilde = -1.014(12)(stat)(16)(syst), is in agreement with the standard-model value of -0.987(9), which includes recoil-order corrections that were addressed for the first time for this isotope. Further, it enables limits to be placed on possible tensor-type charged weak currents, as well as other physics beyond the standard model. (en)
Title	Precision measurements of the Co-60 beta-asymmetry parameter in search for tensor currents in weak interactions Precision measurements of the Co-60 beta-asymmetry parameter in search for tensor currents in weak interactions (en)
skos:prefLabel	Precision measurements of the Co-60 beta-asymmetry parameter in search for tensor currents in weak interactions Precision measurements of the Co-60 beta-asymmetry parameter in search for tensor currents in weak interactions (en)
skos:notation	RIV/61389005:_____/10:00358087!RIV11-MSM-61389005
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(LA08015), Z(AV0Z10480505)
http://linked.open...iv/cisloPeriodika	5
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Zákoucký, Dalibor
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav jaderné fyziky AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	281024
http://linked.open...ai/riv/idVysledku	RIV/61389005:_____/10:00358087
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	NUCLEAR-MAGNETIC-RESONANCE; POSITRON DECAY; PARITY CONSERVATION (en)
http://linked.open.../riv/klicoveSlovo	PARITY CONSERVATION POSITRON DECAY NUCLEAR-MAGNETIC-RESONANCE
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[6224A0A7E03C]
http://linked.open...i/riv/nazevZdroje	Physical Review. C
http://linked.open...in/vavai/riv/obor	BG
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	16 (xsd:int)
http://linked.open...vavai/riv/projekt	Collaboration of the Czech Republic with CERN
http://linked.open...UplatneniVysledku	2010
http://linked.open...v/svazekPeriodika	82
http://linked.open...iv/tvurceVysledku	Beck, M. Breitenfeldt, M. De Leebeeck, V. Roccia, S. Severijns, N. Soti, G. Tandecki, M. Traykov, E. Van Gorp, S. Wauters, F. Zákoucký, Dalibor Golovko, V. V. Kozlov, V. Yu. Kraev, I. Phalet, T. Towner, I. S.
http://linked.open...ain/vavai/riv/wos	000286731900004
http://linked.open...n/vavai/riv/zamer	Jaderná fyzika a příbuzné obory v základním, aplikovaném a interdisciplinárním výzkumu
issn	0556-2813
number of pages	14 (xsd:int)

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