Neutrino vertex reconstruction with in-ice radio detectors using surface reflections and implications for the neutrino energy resolution

被引：27

作者：

Anker, A. ^{[1
]}

Barwick, S. W. ^{[1
]}

Bernhoff, H. ^{[2
]}

Besson, D. Z. ^{[3
,4
]}

Bingefors, N. ^{[5
]}

Garcia-Fernandez, D. ^{[6
,7
]}

Gaswint, G. ^{[1
]}

Glaser, C. ^{[1
]}

Hallgren, A. ^{[5
]}

Hanson, J. C. ^{[8
]}

Klein, S. R. ^{[9
]}

Kleinfelder, S. A. ^{[10
]}

Lahmann, R. ^{[1
,7
]}

Latif, U. ^{[3
]}

Nam, J. ^{[11
,12
]}

Novikov, A. ^{[3
,4
]}

Nelles, A. ^{[6
,7
]}

Paul, M. P. ^{[1
]}

Persichilli, C. ^{[1
]}

Plaisier, I. ^{[6
,7
]}

Prakash, T. ^{[9
]}

Shively, S. R. ^{[1
]}

Tatar, J. ^{[1
,13
]}

Unger, E. ^{[5
]}

Wang, S. -H. ^{[11
,12
]}

Welling, C. ^{[6
,7
]}

Zierke, S. ^{[14
]}

机构：

[1] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA

[2] Uppsala Univ, Div Elect, Dept Engn Sci, SE-75237 Uppsala, Sweden

[3] Univ Kansas, Dept Phys & Astron, Lawrence, KS 66045 USA

[4] Natl Res Nucl Univ MEPhI Moscow Engn Phys Inst, Moscow 115409, Russia

[5] Uppsala Univ, Dept Phys & Astron, SE-75237 Uppsala, Sweden

[6] DESY, D-15738 Zeuthen, Germany

[7] Friedrich Alexander Univ Erlangen Nurnberg, ECAP, D-91058 Erlangen, Germany

[8] Whittier Coll, Dept Phys, Whittier, CA 90602 USA

[9] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

[10] Univ Calif Irvine, Dept Elect Engn & Comp Sci, Irvine, CA 92697 USA

[11] Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan

[12] Natl Taiwan Univ, Leung Ctr Cosmol & Particle Astrophys, Taipei 10617, Taiwan

[13] Univ Calif Irvine, Res Cyberinfrastruct Ctr, Irvine, CA 92697 USA

[14] Rhein Westfal TH Aachen, Phys Inst 3, Aachen, Germany

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2019年 / 11期

基金：

美国国家科学基金会;

关键词：

neutrino astronomy; neutrino detectors; neutrino experiments; ultra high energy photons and neutrinos; HADRONIC SHOWERS;

D O I：

10.1088/1475-7516/2019/11/030

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Ultra high energy neutrinos (E-nu >10(16.5) eV) are efficiently measured via radio signals following a neutrino interaction in ice. An antenna placed O(15 m) below the ice surface will measure two signals for the vast majority of events (90% at E-nu = 10(18) eV): a direct pulse and a second delayed pulse from a reflection off the ice surface. This allows for a unique identification of neutrinos against backgrounds arriving from above. Furthermore, the time delay between the direct and reflected signal (D'n'R) correlates with the distance to the neutrino interaction vertex, a crucial quantity to determine the neutrino energy. In a simulation study, we derive the relation between time delay and distance and study the corresponding experimental uncertainties in estimating neutrino energies. We find that the resulting contribution to the energy resolution is well below the natural limit set by the unknown inelasticity in the initial neutrino interaction. We present an in-situ measurement that proves the experimental feasibility of this technique. Continuous monitoring of the local snow accumulation in the vicinity of the transmit and receive antennas using this technique provide a precision of O(1mm) in surface elevation, which is much better than that needed to apply the D'n'R technique to neutrinos.

引用

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