Observation of a neutrino burst from the supernova SN1987A

Hirata, Keiko; Kajita, T.; Koshiba, M.; Nakahata, M.; Oyama, Y.; Sato, Nobuaki; Suzuki, Akihiro; Takita, M.; Totsuka, Y.; Kifune, T.; Suda, Takuma; Takahashi, Keitaro; Tanimori, T.; Miyano, K.; Yamada, Masashi; Beier, E. W.; Feldscher, L. R.; Kim, S. B.; Mann, A. K.; Newcomer, F. M.; Van, R.; Zhang, W.; Cortez, B.

doi:10.1103/physrevlett.58.1490

Cited by 1,911 publications

(1,061 citation statements)

References 4 publications

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“…Accurately measuring electrons from ν e interactions is necessary for upcoming research programs investigating non-standard neutrino oscillations, lepton-sector CP violation, and the neutrino mass-hierarchy [1,2]. Additionally, neutrinos produced in galactic supernovae bursts (SNBs) are expected to produce electrons in the 5-50 MeV energy range [3,4]. The ability to obtain a precise energy response for low-energy electrons is therefore essential for neutrino oscillation and SNB measurements.…”

Section: Introductionmentioning

confidence: 99%

Michel electron reconstruction using cosmic-ray data from the MicroBooNE LArTPC

Acciarri

Adams

et al. 2017

J. Inst.

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A: The MicroBooNE liquid argon time projection chamber (LArTPC) has been taking data at Fermilab since 2015 collecting, in addition to neutrino beam, cosmic-ray muons. Results are presented on the reconstruction of Michel electrons produced by the decay at rest of cosmic-ray muons. Michel electrons are abundantly produced in the TPC, and given their well known energy spectrum can be used to study MicroBooNE's detector response to low-energy electrons (electrons with energies up to~50 MeV). We describe the fully-automated algorithm developed to reconstruct Michel electrons, with which a sample of~14,000 Michel electron candidates is obtained. Most of this article is dedicated to studying the impact of radiative photons produced by Michel electrons on the accuracy and resolution of their energy measurement. In this energy range, ionization and bremsstrahlung photon production contribute similarly to electron energy loss in argon, leading to a complex electron topology in the TPC. By profiling the performance of the reconstruction algorithm on simulation we show that the ability to identify and include energy deposited by radiative photons leads to a significant improvement in the energy measurement of low-energy electrons. The fractional energy resolution we measure improves from over 30% to~20% when we attempt to include radiative photons in the reconstruction. These studies are relevant to a large number of analyses which aim to study neutrinos by measuring electrons produced by ν e interactions over a broad energy range. K: Michel electrons, LArTPC, MicroBooNE

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Section: Introductionmentioning

confidence: 99%

Michel electron reconstruction using cosmic-ray data from the MicroBooNE LArTPC

Acciarri

Adams

et al. 2017

J. Inst.

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“…A few dozenν e from SN1987A were recorded in a number of detectors (IMB [42], Kamiokande II [43], Baksan [44], and Mont Blanc [45]) via the charged-current processν e + p → e + + n. These observations set the stage for the detection of neutrinos from future supernovae. [It is less certain [46] that ν e -initiated events associated with SN1987A have been established.…”

Section: Signatures In Neutrino Observatoriesmentioning

confidence: 99%

Gravitational lensing of supernova neutrinos

Mena

Mocioiu

Quigg

2007

Astroparticle Physics

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“…in Hirata et al, 1987;Bionta et al, 1987; Correspondence to: C. Vigorito (vigorito@to.infn.it) Alekseev et al, 1987) and, in spite of some unresolved controversies Aglietta et al (1987) opened the way for a new method of investigation: the neutrino astronomy. Even in the lack of a complete theory of the core collapse supernova explosion the correlated neutrino emission is believed to be well established and should be detected with different active detectors at the time next event will occur within the Milky Way boundaries.…”

Section: Introductionmentioning

confidence: 99%

Neutrino bursts from gravitational stellar collapses with LVD

Molinario

Vigorito

2012

Nuclear Physics B - Proceedings Supplements

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Abstract. The main goal of the Large Volume Detector (LVD), in the INFN Gran Sasso National Laboratory (Italy), is the study of neutrino bursts from gravitational stellar collapses in the Milky Way. Both the detector and the data analysis procedure have been actually optimized for this purpose. Moreover the modularity of the apparatus allows to obtain a duty cycle that is very close to 100%, so that the experiment is continuously monitoring the Galaxy.The search for Supernova neutrino signal is performed online, within fixed duration time windows (20 s), and offline with variable duration time windows from few ms up to 200 s. In both cases, LVD is able to disentangle a cluster of neutrino signals from the background fluctuations, and its sensitivity extends to the whole Galaxy.No candidates have been detected during almost 18 years of observation (6013 days of lifetime): the resulting 90% c.l. upper limit to the rate of gravitational stellar collapses in the Galaxy is 0.14 events/year. Detector performances, search method and data results are here reported.

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Observation of a neutrino burst from the supernova SN1987A

Cited by 1,911 publications

References 4 publications

Michel electron reconstruction using cosmic-ray data from the MicroBooNE LArTPC

Michel electron reconstruction using cosmic-ray data from the MicroBooNE LArTPC

Gravitational lensing of supernova neutrinos

Neutrino bursts from gravitational stellar collapses with LVD

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