Understanding supernova-neutrino physics using low-energy beta-beams

Jachowicz, Natalie; McLaughlin, G. C.

doi:10.1016/j.ppnp.2005.11.013

Cited by 3 publications

(5 citation statements)

References 3 publications

(5 reference statements)

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“…The disposal of a devoted storage ring would probably be the ideal tool for low-energy neutrino physics [12]. The potential of such a facility has been stressed in several papers [9,13,14,16,17,18,19,20]. In Table I, we summarize the characteristics of the corresponding fluxes for the case of antineutrinos 1 resulting from the decay of γ = 7 and γ = 14 6 He ions.…”

Section: Neutrino Flux Profilesmentioning

confidence: 99%

“…[9] yield pure beams of electron neutrinos or antineutrinos produced through the decay of radioactive ions circulating in a storage ring [10,11]. Several applications utilizing low-energy beta-beams have been discussed in the literature concerning neutrino-nucleus scattering [12,13,14], electroweak tests of the Standard Model [15,16,17,18,19], as well as core-collapse supernova physics [9,20].…”

Section: Introductionmentioning

confidence: 99%

“…From the practical point of view, the proposed idea presents several attractive features. First it would not require a devoted storage ring as discussed in previous works [9,12,13,16,17,18,19,20]. Second, specific beamtime would not be needed since one would exploit the neutrino beams planned for CP violation studies.…”

Section: Introductionmentioning

confidence: 99%

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Low-energy neutrinos at off-axis from a standard beta beam

et al. 2007

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We discuss a scenario to extract up to 150 MeV neutrinos at a standard beta-beam facility using one and two detectors off-axis. In particular we show that the high-energy component of the neutrino fluxes can be subtracted through a specific combination of the response of two off-axis detectors. A systematic analysis of the neutrino fluxes using different detector geometries is presented, as well as a comparison with the expected fluxes at a low-energy beta-beam facility. The presented option could offer an alternative way to perform low-energy neutrino experiments.

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Section: Neutrino Flux Profilesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Low-energy neutrinos at off-axis from a standard beta beam

et al. 2007

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“…Επίσης, όταν η τελική πυρηνική κατάσταση δεν μπορεί να προσδιοριστεί, δηλαδή για ολικές (αθροιστικές) διαδικασίες νετρίνου-πυρήνα (inclusive neutrino nucleus processes), πρέπει κανείς να ολοκληρώσει (αθροίσει) την Εξ. (3.38), δηλαδή ως προς όλες τις δυνατές τελικές καταστάσεις, οπότε λαμβάνεται η ολική ενεργός διατομή, σ tot , σαν συνάρτηση της ενέργειας του εισερχομένου νετρίνου ε ν [176,219] [17,134,252], χρησιμοποιούνται και οι συσσωρευτικές ή αθροιστικές (cumulative) ενεργές διατομές σ cum (ω k ), που δίνουν την διαφορική (ή ολική) ενεργό διατομή της αντιδρασης νετρίνου-πυρήνα κατά την οποία ο πυρήνας μεταβαίνει σε κάποια κατάσταση που κείται χαμηλότερα μια ενέργεια διέγερσης ω k για μια σταθερή ενέργεια του εισερχομένου νετρίνου, ε ν =σταθ. Η συσσωρευτική ενεργός διατομή, ορίζεται από την εξίσωση…”

Section: η προσέγγιση τυχαίας φάσης με ημισωμάτια (Qrpa)unclassified

“…Απόκριση ισοτόπων 128,130 Te στα μπορούν να ληφθούν υπόψει, από μία τροποποιημένη στην κατεύθυνση αυτή ενεργειακή κατανομή SN-νετρίνων [71,127,140] Για την επίτευξη καλλίτερης προσαρμογής, ένας αριθμός παραμέτρων μπορεί να εισαχθεί ο οποίος να διακρίνει μεταξύ των διαφόρων διαδικασιών αποδιέγερσης. Τέτοιοι υπολογισμοί έχουν γίνει πρόσφατα από άλλους ερευνητές [249,252] και δείχνουν ότι, ειδικότερα η θεώρηση εκπομπής ενός και δύο (αλλά και περισσοτέρων μέχρι πέντε [249]) νουκλεονίων, μας παρέχει έναν μάλλον αξιόπιστο τρόπο εξαγωγής πληροφοριών σχετικών με την ενέργεια των σουπερνόβα νετρίνων.…”

Section: συνέλιξη της διπλής διαφορικής ενεργού διατομής D 2 σ/Dθdωunclassified

Μελέτη Αστροφυσικών Νετρίνων Με Τεχνικές Προσομοίωσης Και Υπολογισμούς Πυρηνικής Δομής

Τσακστάρα¹

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Study of astrophysical neutrinoswith simulation techniques and nuclear structure calculations by: Vaitsa Tsakstara In the present Thesis, we investigated low and intermediate energy astrophysical neutrinos, by performing nuclear structure calculations and employing modern simulation techniques. One of our main goals, was to explore the nuclear response to supernova neutrino energy spectra of various nuclear detectors used recently in terrestrial experiments searching for events of rare process, like the neutrinoless double beta decay, that take place in the presence of nuclei.We concentrated on the systematic studies of the neutrino-nucleus reactions 64,66 Zn(ν, ν ′ ) 64,66 Zn * and 128,130 T e(ν, ν ′ ) 128,130 T e * , as well as the antineutrinonucleus reactions 64,66 Zn( ν, ν ′ ) 64,66 Zn * and 128,130 T e( ν, ν ′ ) 128,130 T e * . The nuclei T e and Zn, are contents of the CdZnT e and CdT e semi-conductors, which are promising detectors of the COBRA double beta decay experiment at Gran Sasso.From a nuclear structure calculations point of view, the original (anti)neutrinonucleus reaction cross sections are evaluated within the context of the quasiparticle random phase approximation (QRPA), by utilizing realistic two-body forces for the strong nucleon-nucleon interaction. We restricted ourselves to the neutral current (anti)neutrino-nucleus reactions, assuming an effective Hamiltonian for the description of the weak interaction between the incoming neutrino and the nuclear target constructed in the framework of the current-current interaction hypothesis, i.e. written as a product of the leptonic times the hadronic (nuclear) current.The detailed original cross sections presented in the present study, refer to the double differential (with respect to anglesΩ and the nuclear excitation energy ω), the single differential (with respect to the nuclear excitation energy ω), as well as to the cumulative (integrated) and the total cross sections. We employed an advantageous numerical approach published by our group recently, which provides state-by-state calculations of the relevant cross sections for all multipolarities emphasizing on the most important ones, i.e. those with J π 8 ± . For all isotopes studied, the differential and total cross sections as functions of the nuclear excitation energy ω, are dominated by contributions originating from the 1 − , 2 + xvii and 1 + multipolarities. We paid special attention on the dependence of the cross sections on the incoming neutrino energies (varying in the region ε ν 100 − 150 MeV), on the nuclear excitation energy of each isotope (ω 30 MeV) and on the other kinematical parameters. Due to the fact that, for all isotopes most of the low-lying transitions induced by the (anti)neutrino-nucleus interaction are the 2 + states, we studied them in more detail.The nuclear response of 64,66 Zn and 128,130 T e isotopes to supernova neutrino spectra, was studied by convoluting the original cross sections with well known supernova (anti)neutrino-energy distributions such as the two pa...

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Conserved vector current test using low energy beta beams

et al. 2006

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We discuss the possibility of testing the weak currents and, in particular, the weak magnetism term through the measurement of the νe + p → e + + n reaction at a low energy beta-beam facility. We analyze the sensitivity using both the total number of events and the angular distribution of the positrons emitted in a waterČerenkov detector. We show that the weak magnetism form factor might be determined with better than several percent accuracy using the angular distribution. This offers a new way of testing the Conserved Vector Current hypothesis.

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Understanding supernova-neutrino physics using low-energy beta-beams

Cited by 3 publications

References 3 publications

Low-energy neutrinos at off-axis from a standard beta beam

Low-energy neutrinos at off-axis from a standard beta beam

Μελέτη Αστροφυσικών Νετρίνων Με Τεχνικές Προσομοίωσης Και Υπολογισμούς Πυρηνικής Δομής

Conserved vector current test using low energy beta beams

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