New limits on heavy sterile neutrino mixing in 8B decay obtained with the Borexino detector

被引：38

作者：

Bellini, G. ^{[9
,10
]}

Benziger, J. ^{[14
]}

Bick, D. ^{[21
]}

Bonfini, G. ^{[6
]}

Bravo, D. ^{[19
]}

Avanzini, M. Buizza ^{[9
,10
]}

Caccianiga, B. ^{[9
,10
]}

Cadonati, L. ^{[18
]}

Calaprice, F. ^{[15
]}

Cavalcante, P. ^{[6
]}

Chavarria, A. ^{[15
]}

Chepurnov, A. ^{[20
]}

D'Angelo, D. ^{[9
,10
]}

Davini, S. ^{[22
]}

Derbin, A.

Drachnev, I. ^{[16
]}

Empl, A.

Etenko, A. ^{[8
]}

Fomenko, K. ^{[2
,6
]}

Franco, D. ^{[1
]}

Galbiati, C. ^{[15
]}

Gazzana, S. ^{[6
]}

Ghiano, C. ^{[1
]}

Giammarchi, M. ^{[9
,10
]}

Goeger-Neff, M. ^{[17
]}

Goretti, A. ^{[15
]}

Grandi, L. ^{[15
]}

Hagner, C. ^{[21
]}

Hungerford, E. ^{[22
]}

Ianni, Aldo ^{[6
]}

Ianni, Andrea ^{[15
]}

Kobychev, V. ^{[7
]}

Korablev, D. ^{[2
]}

Korga, G. ^{[22
]}

Kryn, D. ^{[1
]}

Laubenstein, M. ^{[6
]}

Lewke, T. ^{[17
]}

Litvinovich, E. ^{[8
]}

Loer, B. ^{[15
]}

Lombardi, F. ^{[6
]}

Lombardi, P. ^{[9
,10
]}

Ludhova, L. ^{[9
,10
]}

Lukyanchenko, G. ^{[8
]}

Machulin, I. ^{[8
]}

Manecki, S. ^{[19
]}

Maneschg, W. ^{[11
]}

Manuzio, G. ^{[3
,4
]}

Meindl, Q.

Meroni, E. ^{[9
,10
]}

Miramonti, L. ^{[9
,10
]}

机构：

[1] Univ Paris Diderot, APC, CNRS IN2P3, CEA Irfu,Observ Paris, F-75205 Paris, France

[2] Joint Inst Nucl Res, Dubna 141980, Russia

[3] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy

[4] Ist Nazl Fis Nucl, I-16146 Genoa, Italy

[5] Jagiellonian Univ, M Smoluchowski Inst Phys, PL-30059 Krakow, Poland

[6] Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, I-67010 Assergi, Italy

[7] Inst Nucl Res, UA-06380 Kiev, Ukraine

[8] NRC Kurchatov Inst, Moscow 123182, Russia

[9] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy

[10] Ist Nazl Fis Nucl, I-20133 Milan, Italy

[11] Max Planck Inst Kernphys, D-69029 Heidelberg, Germany

[12] Univ Perugia, Dipartimento Chim, I-06123 Perugia, Italy

[13] Ist Nazl Fis Nucl, I-20133 Perugia, Italy

[14] Princeton Univ, Dept Chem Engn, Princeton, NJ 08544 USA

[15] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA

[16] St Petersburg Nucl Phys Inst, Gatchina 188350, Russia

[17] Tech Univ Munich, Dept Phys, D-85747 Garching, Germany

[18] Univ Massachusetts, Dept Phys, Amherst, MA 01003 USA

[19] Virginia Polytech Inst & State Univ, Dept Phys, Blacksburg, VA 24061 USA

[20] Moscow MV Lomonosov State Univ, Skobeltsyn Inst Nucl Phys, Moscow 119234, Russia

[21] Univ Hamburg, Inst Expt Phys, D-22761 Hamburg, Germany

[22] Univ Houston, Dept Phys, Houston, TX 77204 USA

[23] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

来源：

PHYSICAL REVIEW D | 2013年 / 88卷 / 07期

基金：

美国国家科学基金会;

关键词：

BETA-SPECTRUM; MASSIVE NEUTRINOS; SEARCH; SOLAR; REACTOR; BOUNDS; COSMOLOGY; ADMIXTURE; ELECTRON; LEPTONS;

D O I：

10.1103/PhysRevD.88.072010

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

If heavy neutrinos with mass m(vH) >= 2m(e) are produced in the Sun via the decay B-8 -> Be-8 + e(+) + v(H) in a side branch of the pp chain, they would undergo the observable decay into an electron, a positron and a light neutrino v(H) -> v(L) + e(+) + e(-). In the present work Borexino data are used to set a bound on the existence of such decays. We constrain the mixing of a heavy neutrino with mass 1: 5 MeV <= m(vH) <= 14 MeV to be vertical bar U-eH vertical bar(2) <= (10(-3) - 4 x 10(-6) ), respectively. These are tighter limits on the mixing parameters than obtained in previous experiments at nuclear reactors and accelerators.

引用

页数：7

共 24 条

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H. O. Back
M. Belata
A. de Bari
T. Beau
A. de Bellefon
G. Bellini
J. Benziger
S. Bonetti
C. Buck
B. Caccianiga
L. Cadonati
F. Calaprice
G. Cecchet
M. Chen
A. Di Credico
O. Dadoun
D. D’Angelo
A. Derbin
M. Deutsch
F. Elisei
A. Etenko
F. von Feilitzsch
R. Fernholz
R. Ford
D. Franco
B. Freudiger
C. Galbiati
F. Gatti
S. Gazzana
M. G. Giammarchi
D. Giugni
M. Goeger-Neff
A. Goretti
C. Grieb
C. Hagner
E. Harding
F. X. Hartmann
G. Heusser
A. Ianni
A. M. Ianni
H. De Kerret
J. Kiko
T. Kirsten
V. Kobychev
G. Korga
G. Korschinek
Y. Kozlov
D. Kryn
J. Lamblin
M. Laubenstein
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