Semantic Scholar Open Access 2019 132 sitasi

Probing Majorana neutrinos with double-β decay

M. Agostini A. Bakalyarov M. Balata I. Barabanov L. Baudis +108 lainnya

Lihat Sumber DOI

Abstrak

Looking for an exotic decay Neutrinos—elementary fermionic particles with no electrical charge—defy the standard model of particle physics by having a tiny, but nonzero mass. One explanation for their properties is that they are Majorana fermions, which are particles equal to their antiparticles. If neutrinos were Majorana fermions, a process called neutrinoless double-β decay would become possible: an unstable nucleus could decay by turning two of its neutrons into protons with the emission of two electrons but no antineutrinos. The GERDA Collaboration searched for this decay in a particular isotope of germanium. Housed deep underground to reduce the background signal, the experiment did not detect the elusive process but did place improved boundaries on its half-life. Science, this issue p. 1445 A germanium detector–based experiment places improved boundaries on the half-life of an exotic nuclear decay. A discovery that neutrinos are Majorana fermions would have profound implications for particle physics and cosmology. The Majorana character of neutrinos would make possible the neutrinoless double-β (0νββ) decay, a matter-creating process without the balancing emission of antimatter. The GERDA Collaboration searches for the 0νββ decay of 76Ge by operating bare germanium detectors in an active liquid argon shield. With a total exposure of 82.4 kg⋅year, we observe no signal and derive a lower half-life limit of T1/2 > 0.9 × 1026 years (90% C.L.). Our T1/2 sensitivity, assuming no signal, is 1.1 × 1026 years. Combining the latter with those from other 0νββ decay searches yields a sensitivity to the effective Majorana neutrino mass of 0.07 to 0.16 electron volts.

Topik & Kata Kunci

Physics Medicine

Penulis (113)

M. Agostini

A. Bakalyarov

M. Balata

I. Barabanov

L. Baudis

C. Bauer

E. Bellotti

S. Belogurov

A. Bettini

L. Bezrukov

D. Borowicz

V. Brudanin

R. Brugnera

A. Caldwell

C. Cattadori

A. Chernogorov

T. Comellato

V. D’Andrea

E. Demidova

N. Di Marco

A. Domula

E. Doroshkevich

V. Egorov

R. Falkenstein

M. Fomina

A. Gangapshev

A. Garfagnini

M. Giordano

P. Grabmayr

V. Gurentsov

K. Gusev

J. Hakenmüller

A. Hegai

M. Heisel

S. Hemmer

R. Hiller

W. Hofmann

M. Hult

L. Inzhechik

J. Janicskó Csáthy

J. Jochum

M. Junker

V. Kazalov

Y. Kermaïdic

T. Kihm

I. Kirpichnikov

A. Kirsch

A. Kish

A. Klimenko

R. Kneissl

K. Knöpfle

O. Kochetov

V. Kornoukhov

P. Krause

V. Kuzminov

M. Laubenstein

A. Lazzaro

M. Lindner

I. Lippi

A. Lubashevskiy

B. Lubsandorzhiev

G. Lutter

C. Macolino

B. Majorovits

W. Maneschg

M. Miloradovic

R. Mingazheva

M. Misiaszek

P. Moseev

I. Nemchenok

K. Panas

L. Pandola

K. Pelczar

L. Pertoldi

P. Piseri

A. Pullia

C. Ransom

S. Riboldi

N. Rumyantseva

C. Sada

E. Sala

F. Salamida

C. Schmitt

B. Schneider

S. Schönert

A. Schütz

O. Schulz

M. Schwarz

B. Schwingenheuer

O. Selivanenko

E. Shevchik

M. Shirchenko

H. Simgen

A. Smolnikov

L. Stanco

D. Stukov

L. Vanhoefer

A. Vasenko

A. Veresnikova

K. von Sturm

V. Wagner

A. Wegmann

T. Wester

C. Wiesinger

M. Wójcik

E. Yanovich

I. Zhitnikov

S. Zhukov

D. Zinatulina

A. Zschocke

A. Zsigmond

K. Zuber

G. Zuzel

Format Sitasi

APA MLA BibTeX

Agostini, M., Bakalyarov, A., Balata, M., Barabanov, I., Baudis, L., Bauer, C. et al. (2019). Probing Majorana neutrinos with double-β decay. https://doi.org/10.1126/science.aav8613

@article{agostini2019, author = {M. Agostini and A. Bakalyarov and M. Balata and I. Barabanov and L. Baudis and C. Bauer and E. Bellotti and S. Belogurov and A. Bettini and L. Bezrukov and D. Borowicz and V. Brudanin and R. Brugnera and A. Caldwell and C. Cattadori and A. Chernogorov and T. Comellato and V. D’Andrea and E. Demidova and N. Di Marco and A. Domula and E. Doroshkevich and V. Egorov and R. Falkenstein and M. Fomina and A. Gangapshev and A. Garfagnini and M. Giordano and P. Grabmayr and V. Gurentsov and K. Gusev and J. Hakenmüller and A. Hegai and M. Heisel and S. Hemmer and R. Hiller and W. Hofmann and M. Hult and L. Inzhechik and J. Janicskó Csáthy and J. Jochum and M. Junker and V. Kazalov and Y. Kermaïdic and T. Kihm and I. Kirpichnikov and A. Kirsch and A. Kish and A. Klimenko and R. Kneissl and K. Knöpfle and O. Kochetov and V. Kornoukhov and P. Krause and V. Kuzminov and M. Laubenstein and A. Lazzaro and M. Lindner and I. Lippi and A. Lubashevskiy and B. Lubsandorzhiev and G. Lutter and C. Macolino and B. Majorovits and W. Maneschg and M. Miloradovic and R. Mingazheva and M. Misiaszek and P. Moseev and I. Nemchenok and K. Panas and L. Pandola and K. Pelczar and L. Pertoldi and P. Piseri and A. Pullia and C. Ransom and S. Riboldi and N. Rumyantseva and C. Sada and E. Sala and F. Salamida and C. Schmitt and B. Schneider and S. Schönert and A. Schütz and O. Schulz and M. Schwarz and B. Schwingenheuer and O. Selivanenko and E. Shevchik and M. Shirchenko and H. Simgen and A. Smolnikov and L. Stanco and D. Stukov and L. Vanhoefer and A. Vasenko and A. Veresnikova and K. von Sturm and V. Wagner and A. Wegmann and T. Wester and C. Wiesinger and M. Wójcik and E. Yanovich and I. Zhitnikov and S. Zhukov and D. Zinatulina and A. Zschocke and A. Zsigmond and K. Zuber and G. Zuzel}, title = {Probing Majorana neutrinos with double-β decay}, year = {2019}, journal = {Semantic Scholar}, doi = {10.1126/science.aav8613}, url = {https://www.semanticscholar.org/paper/def1277a65e746a8882be018a4ab188e2187b31f}, }

Akses Cepat

Lihat di Sumber doi.org/10.1126/science.aav8613

Informasi Jurnal

Tahun Terbit: 2019
Bahasa: en
Total Sitasi: 132×
Sumber Database: Semantic Scholar
DOI: 10.1126/science.aav8613
Akses: Open Access ✓