Results From the First Use of Low Radioactivity Argon in a Dark Matter Search
P. Agnes
(1)
,
L. Agostino
(2)
,
I.F.M. Albuquerque
,
T. Alexander
,
A.K. Alton
,
K. Arisaka
,
H.O. Back
,
B. Baldin
,
K. Biery
,
G. Bonfini
,
M. Bossa
,
B. Bottino
,
A. Brigatti
,
J. Brodsky
,
F. Budano
,
S. Bussino
,
M. Cadeddu
,
L. Cadonati
,
M. Cadoni
,
F. Calaprice
,
N. Canci
,
A. Candela
,
H. Cao
,
M. Cariello
,
M. Carlini
,
S. Catalanotti
,
P. Cavalcante
,
A. Chepurnov
,
A.G. Cocco
,
G. Covone
,
L. Crippa
,
D. d'Angelo
,
M. d'Incecco
,
S. Davini
,
S. de Cecco
(2)
,
M. de Deo
,
M. de Vincenzi
,
A. Derbin
,
A. Devoto
,
F. Di Eusanio
,
G. Di Pietro
,
E. Edkins
,
A. Empl
,
A. Fan
,
G. Fiorillo
,
K. Fomenko
,
G. Forster
,
D. Franco
(1)
,
F. Gabriele
,
C. Galbiati
,
C. Giganti
(2)
,
A.M. Goretti
,
F. Granato
,
L. Grandi
,
M. Gromov
,
M. Guan
,
Y. Guardincerri
,
B.R. Hackett
,
K. Herner
,
E.V. Hungerford
,
Al. Ianni
,
An. Ianni
,
I. James
,
C. Jollet
(3)
,
K. Keeter
,
C.L. Kendziora
,
V. Kobychev
,
G. Koh
,
D. Korablev
,
G. Korga
,
A. Kubankin
,
X. Li
,
M. Lissia
,
P. Lombardi
,
S. Luitz
,
Y. Ma
,
I.N. Machulin
,
A. Mandarano
,
S.M. Mari
,
J. Maricic
,
L. Marini
,
C.J. Martoff
,
A. Meregaglia
(3)
,
P.D. Meyers
,
T. Miletic
,
R. Milincic
,
D. Montanari
,
A. Monte
,
M. Montuschi
,
M. Monzani
,
P. Mosteiro
,
B.J. Mount
,
V.N. Muratova
,
P. Musico
,
J. Napolitano
,
A. Nelson
,
S. Odrowski
,
M. Orsini
,
F. Ortica
,
L. Pagani
,
M. Pallavicini
,
E. Pantic
,
S. Parmeggiano
,
K. Pelczar
,
N. Pelliccia
,
S. Perasso
(1)
,
A. Pocar
,
S. Pordes
,
D.A. Pugachev
,
H. Qian
,
K. Randle
,
G. Ranucci
,
A. Razeto
,
B. Reinhold
,
A.L. Renshaw
,
A. Romani
,
B. Rossi
,
N. Rossi
,
D. Rountree
,
D. Sablone
,
P. Saggese
,
R. Saldanha
,
W. Sands
,
S. Sangiorgio
,
C. Savarese
,
E. Segreto
,
D.A. Semenov
,
E. Shields
,
P.N. Singh
,
M.D. Skorokhvatov
,
O. Smirnov
,
A. Sotnikov
,
C. Stanford
,
Y. Suvorov
,
R. Tartaglia
,
J. Tatarowicz
,
G. Testera
,
A. Tonazzo
(1)
,
P. Trinchese
,
E.V. Unzhakov
,
A. Vishneva
,
B. Vogelaar
,
M. Wada
,
S. Walker
,
H. Wang
,
Y. Wang
,
A.W. Watson
,
S. Westerdale
,
J. Wilhelmi
,
M.M. Wojcik
,
X. Xiang
,
J. Xu
,
C. Yang
,
J. Yoo
,
S. Zavatarelli
,
A. Zec
,
W. Zhong
,
C. Zhu
,
G. Zuzel
P. Agnes
- Function : Author
- PersonId : 783178
- ORCID : 0000-0001-7117-1251
- IdRef : 230064167
I.F.M. Albuquerque
- Function : Author
T. Alexander
- Function : Author
A.K. Alton
- Function : Author
K. Arisaka
- Function : Author
H.O. Back
- Function : Author
B. Baldin
- Function : Author
K. Biery
- Function : Author
G. Bonfini
- Function : Author
M. Bossa
- Function : Author
B. Bottino
- Function : Author
A. Brigatti
- Function : Author
J. Brodsky
- Function : Author
F. Budano
- Function : Author
S. Bussino
- Function : Author
M. Cadeddu
- Function : Author
L. Cadonati
- Function : Author
M. Cadoni
- Function : Author
F. Calaprice
- Function : Author
N. Canci
- Function : Author
A. Candela
- Function : Author
H. Cao
- Function : Author
M. Cariello
- Function : Author
M. Carlini
- Function : Author
S. Catalanotti
- Function : Author
P. Cavalcante
- Function : Author
A. Chepurnov
- Function : Author
A.G. Cocco
- Function : Author
G. Covone
- Function : Author
L. Crippa
- Function : Author
D. d'Angelo
- Function : Author
M. d'Incecco
- Function : Author
S. Davini
- Function : Author
M. de Deo
- Function : Author
M. de Vincenzi
- Function : Author
A. Derbin
- Function : Author
A. Devoto
- Function : Author
F. Di Eusanio
- Function : Author
G. Di Pietro
- Function : Author
E. Edkins
- Function : Author
A. Empl
- Function : Author
A. Fan
- Function : Author
G. Fiorillo
- Function : Author
- PersonId : 755310
- ORCID : 0000-0002-6916-6776
K. Fomenko
- Function : Author
G. Forster
- Function : Author
D. Franco
- Function : Author
- PersonId : 755376
- ORCID : 0000-0002-7790-1224
F. Gabriele
- Function : Author
- PersonId : 783167
- ORCID : 0000-0001-9888-9175
C. Galbiati
- Function : Author
A.M. Goretti
- Function : Author
F. Granato
- Function : Author
L. Grandi
- Function : Author
M. Gromov
- Function : Author
M. Guan
- Function : Author
Y. Guardincerri
- Function : Author
B.R. Hackett
- Function : Author
K. Herner
- Function : Author
E.V. Hungerford
- Function : Author
Al. Ianni
- Function : Author
An. Ianni
- Function : Author
I. James
- Function : Author
K. Keeter
- Function : Author
C.L. Kendziora
- Function : Author
V. Kobychev
- Function : Author
G. Koh
- Function : Author
D. Korablev
- Function : Author
G. Korga
- Function : Author
A. Kubankin
- Function : Author
X. Li
- Function : Author
- PersonId : 806715
- ORCID : 0000-0003-3133-3660
M. Lissia
- Function : Author
P. Lombardi
- Function : Author
S. Luitz
- Function : Author
Y. Ma
- Function : Author
I.N. Machulin
- Function : Author
A. Mandarano
- Function : Author
S.M. Mari
- Function : Author
J. Maricic
- Function : Author
L. Marini
- Function : Author
C.J. Martoff
- Function : Author
P.D. Meyers
- Function : Author
T. Miletic
- Function : Author
R. Milincic
- Function : Author
D. Montanari
- Function : Author
A. Monte
- Function : Author
M. Montuschi
- Function : Author
M. Monzani
- Function : Author
P. Mosteiro
- Function : Author
B.J. Mount
- Function : Author
V.N. Muratova
- Function : Author
P. Musico
- Function : Author
J. Napolitano
- Function : Author
A. Nelson
- Function : Author
S. Odrowski
- Function : Author
M. Orsini
- Function : Author
F. Ortica
- Function : Author
L. Pagani
- Function : Author
M. Pallavicini
- Function : Author
- PersonId : 755306
- ORCID : 0000-0001-7309-3023
- IdRef : 241090474
E. Pantic
- Function : Author
S. Parmeggiano
- Function : Author
K. Pelczar
- Function : Author
N. Pelliccia
- Function : Author
A. Pocar
- Function : Author
S. Pordes
- Function : Author
- PersonId : 776424
- ORCID : 0000-0002-2934-9148
D.A. Pugachev
- Function : Author
H. Qian
- Function : Author
K. Randle
- Function : Author
G. Ranucci
- Function : Author
A. Razeto
- Function : Author
B. Reinhold
- Function : Author
A.L. Renshaw
- Function : Author
A. Romani
- Function : Author
B. Rossi
- Function : Author
N. Rossi
- Function : Author
D. Rountree
- Function : Author
D. Sablone
- Function : Author
P. Saggese
- Function : Author
R. Saldanha
- Function : Author
W. Sands
- Function : Author
S. Sangiorgio
- Function : Author
C. Savarese
- Function : Author
- PersonId : 783179
- ORCID : 0000-0002-6669-5728
E. Segreto
- Function : Author
D.A. Semenov
- Function : Author
E. Shields
- Function : Author
P.N. Singh
- Function : Author
M.D. Skorokhvatov
- Function : Author
O. Smirnov
- Function : Author
A. Sotnikov
- Function : Author
C. Stanford
- Function : Author
Y. Suvorov
- Function : Author
R. Tartaglia
- Function : Author
J. Tatarowicz
- Function : Author
G. Testera
- Function : Author
P. Trinchese
- Function : Author
E.V. Unzhakov
- Function : Author
A. Vishneva
- Function : Author
B. Vogelaar
- Function : Author
M. Wada
- Function : Author
- PersonId : 758063
- ORCID : 0000-0001-9611-2004
S. Walker
- Function : Author
H. Wang
- Function : Author
Y. Wang
- Function : Author
A.W. Watson
- Function : Author
S. Westerdale
- Function : Author
- PersonId : 783180
- ORCID : 0000-0001-8824-6205
J. Wilhelmi
- Function : Author
M.M. Wojcik
- Function : Author
X. Xiang
- Function : Author
J. Xu
- Function : Author
C. Yang
- Function : Author
- PersonId : 755420
- ORCID : 0000-0002-8117-9991
- IdRef : 221426671
J. Yoo
- Function : Author
S. Zavatarelli
- Function : Author
A. Zec
- Function : Author
W. Zhong
- Function : Author
C. Zhu
- Function : Author
G. Zuzel
- Function : Author
Abstract
Liquid argon is a bright scintillator with potent particle identification properties, making it an attractive target for direct-detection dark matter searches. The DarkSide-50 dark matter search here reports the first WIMP search results obtained using a target of low-radioactivity argon. DarkSide-50 is a dark matter detector, using a two-phase liquid argon time projection chamber, located at the Laboratori Nazionali del Gran Sasso. The underground argon is shown to contain Ar39 at a level reduced by a factor (1.4±0.2)×103 relative to atmospheric argon. We report a background-free null result from (2616±43) kg d of data, accumulated over 70.9 live days. When combined with our previous search using an atmospheric argon, the 90% C.L. upper limit on the WIMP-nucleon spin-independent cross section, based on zero events found in the WIMP search regions, is 2.0×10-44 cm2 (8.6×10-44 cm2, 8.0×10-43 cm2) for a WIMP mass of 100 GeV/c2 (1 TeV/c2, 10 TeV/c2).