schliessen

Filtern

 

Bibliotheken

Search for gamma-ray spectral lines with the Fermi Large Area Telescope and dark matter implications

Weakly interacting massive particles (WIMPs) are a theoretical class of particles that are excellent dark matter candidates. WIMP annihilation or decay may produce essentially monochromatic γ rays detectable by the Fermi Large Area Telescope (LAT) against the astrophysical γ -ray emission of the Gal... Full description

Journal Title: Physical Review. D Particles, Fields, Gravitation and Cosmology, 22 October 2013, Vol.88(8)
Main Author: Ackermann, M
Other Authors: Ajello, M , Albert, A , Allafort, A , Baldini, L , Barbiellini, G , Bastieri, D , Bechtol, K , Bellazzini, R , Bissaldi, E , Bloom, E. D , Bonamente, E , Bottacini, E , Brandt, T. J , Bregeon, J , Brigida, M , Bruel, P , Buehler, R , Buson, S , Caliandro, G. A , Cameron, R. A , Caraveo, P. A , Casandjian, J. M , Cecchi, C , Charles, E , Chaves, R. C. G , Chekhtman, A , Chiang, J , Ciprini, S , Claus, R , Cohen-Tanugi, J , Conrad, J , Cutini, S , D’ammando, F , de Angelis, A , de Palma, F , Dermer, C. D , Digel, S. W , Di Venere, L , Drell, P. S , Drlica-Wagner, A , Essig, R , Favuzzi, C , Fegan, S. J , Ferrara, E. C , Focke, W. B , Franckowiak, A , Fukazawa, Y , Funk, S , Fusco, P , Gargano, F , Gasparrini, D , Germani, S , Giglietto, N , Giordano, F , Giroletti, M , Glanzman, T , Godfrey, G , Gomez-Vargas, G. A , Grenier, I. A , Guiriec, S , Gustafsson, M , Hadasch, D , Hayashida, M , Hill, A. B , Horan, D , Hou, X , Hughes, R. E , Inoue, Y , Izaguirre, E , Jogler, T , Kamae, T , Knödlseder, J , Kuss, M , Lande, J , Larsson, S , Latronico, L , Longo, F , Loparco, F , Lovellette, M. N , Lubrano, P , Malyshev, D , Mayer, M , Mazziotta, M. N , Mcenery, J. E , Michelson, P. F , Mitthumsiri, W , Mizuno, T , Moiseev, A. A , Monzani, M. E , Morselli, A , Moskalenko, I. V , Murgia, S , Nakamori, T , Nemmen, R , Nuss, E , Ohsugi, T , Okumura, A , Omodei, N , Orienti, M , Orlando, E , Ormes, J. F , Paneque, D , Perkins, J. S , Pesce-Rollins, M , Piron, F , Pivato, G , Rainò, S , Rando, R , Razzano, M , Razzaque, S , Reimer, A , Reimer, O , Romani, R. W , Sánchez-Conde, M , Schulz, A , Sgrò, C , Siegal-Gaskins, J , Siskind, E. J , Snyder, A , Spandre, G , Spinelli, P , Suson, D. J , Tajima, H , Takahashi, H , Thayer, J. G , Thayer, J. B , Tibaldo, L , Tinivella, M , Tosti, G , Troja, E , Uchiyama, Y , Usher, T. L , Vandenbroucke, J , Vasileiou, V , Vianello, G , Vitale, V , Winer, B. L , Wood, K. S , Wood, M , Yang, Z , Zaharijas, G , Zimmer, S
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 1550-7998 ; E-ISSN: 1550-2368 ; DOI: 10.1103/PhysRevD.88.082002
Link: https://www.osti.gov/servlets/purl/1084305
Zum Text:
SendSend as email Add to Book BagAdd to Book Bag
Staff View
recordid: osti_s1084305
title: Search for gamma-ray spectral lines with the Fermi Large Area Telescope and dark matter implications
format: Article
creator:
  • Ackermann, M
  • Ajello, M
  • Albert, A
  • Allafort, A
  • Baldini, L
  • Barbiellini, G
  • Bastieri, D
  • Bechtol, K
  • Bellazzini, R
  • Bissaldi, E
  • Bloom, E. D
  • Bonamente, E
  • Bottacini, E
  • Brandt, T. J
  • Bregeon, J
  • Brigida, M
  • Bruel, P
  • Buehler, R
  • Buson, S
  • Caliandro, G. A
  • Cameron, R. A
  • Caraveo, P. A
  • Casandjian, J. M
  • Cecchi, C
  • Charles, E
  • Chaves, R. C. G
  • Chekhtman, A
  • Chiang, J
  • Ciprini, S
  • Claus, R
  • Cohen-Tanugi, J
  • Conrad, J
  • Cutini, S
  • D’ammando, F
  • de Angelis, A
  • de Palma, F
  • Dermer, C. D
  • Digel, S. W
  • Di Venere, L
  • Drell, P. S
  • Drlica-Wagner, A
  • Essig, R
  • Favuzzi, C
  • Fegan, S. J
  • Ferrara, E. C
  • Focke, W. B
  • Franckowiak, A
  • Fukazawa, Y
  • Funk, S
  • Fusco, P
  • Gargano, F
  • Gasparrini, D
  • Germani, S
  • Giglietto, N
  • Giordano, F
  • Giroletti, M
  • Glanzman, T
  • Godfrey, G
  • Gomez-Vargas, G. A
  • Grenier, I. A
  • Guiriec, S
  • Gustafsson, M
  • Hadasch, D
  • Hayashida, M
  • Hill, A. B
  • Horan, D
  • Hou, X
  • Hughes, R. E
  • Inoue, Y
  • Izaguirre, E
  • Jogler, T
  • Kamae, T
  • Knödlseder, J
  • Kuss, M
  • Lande, J
  • Larsson, S
  • Latronico, L
  • Longo, F
  • Loparco, F
  • Lovellette, M. N
  • Lubrano, P
  • Malyshev, D
  • Mayer, M
  • Mazziotta, M. N
  • Mcenery, J. E
  • Michelson, P. F
  • Mitthumsiri, W
  • Mizuno, T
  • Moiseev, A. A
  • Monzani, M. E
  • Morselli, A
  • Moskalenko, I. V
  • Murgia, S
  • Nakamori, T
  • Nemmen, R
  • Nuss, E
  • Ohsugi, T
  • Okumura, A
  • Omodei, N
  • Orienti, M
  • Orlando, E
  • Ormes, J. F
  • Paneque, D
  • Perkins, J. S
  • Pesce-Rollins, M
  • Piron, F
  • Pivato, G
  • Rainò, S
  • Rando, R
  • Razzano, M
  • Razzaque, S
  • Reimer, A
  • Reimer, O
  • Romani, R. W
  • Sánchez-Conde, M
  • Schulz, A
  • Sgrò, C
  • Siegal-Gaskins, J
  • Siskind, E. J
  • Snyder, A
  • Spandre, G
  • Spinelli, P
  • Suson, D. J
  • Tajima, H
  • Takahashi, H
  • Thayer, J. G
  • Thayer, J. B
  • Tibaldo, L
  • Tinivella, M
  • Tosti, G
  • Troja, E
  • Uchiyama, Y
  • Usher, T. L
  • Vandenbroucke, J
  • Vasileiou, V
  • Vianello, G
  • Vitale, V
  • Winer, B. L
  • Wood, K. S
  • Wood, M
  • Yang, Z
  • Zaharijas, G
  • Zimmer, S
subjects:
  • Astronomy And Astrophysics
  • Astrophysics
  • Astro
  • Physics
ispartof: Physical Review. D, Particles, Fields, Gravitation and Cosmology, 22 October 2013, Vol.88(8)
description: Weakly interacting massive particles (WIMPs) are a theoretical class of particles that are excellent dark matter candidates. WIMP annihilation or decay may produce essentially monochromatic γ rays detectable by the Fermi Large Area Telescope (LAT) against the astrophysical γ -ray emission of the Galaxy. We have searched for spectral lines in the energy range 5–300 GeV using 3.7 years of data, reprocessed with updated instrument calibrations and an improved energy dispersion model compared to the previous Fermi-LAT Collaboration line searches. We searched in five regions selected to optimize sensitivity to different theoretically motivated dark matter density distributions. We did not find any globally significant lines in our a priori search regions and present 95% confidence limits for annihilation cross sections of self-conjugate WIMPs and decay lifetimes. Our most significant fit occurred at 133 GeV in our smallest search region and had a local significance of 3.3 standard deviations, which translates to a global significance of 1.5 standard deviations. We discuss potential systematic effects in this search, and examine the feature at 133 GeV in detail. We find that the use both of reprocessed data and of additional information in the energy dispersion model contributes to the reduction in significance of the linelike feature near 130 GeV relative to significances reported in other works. We also find that the feature is narrower than the LAT energy resolution at the level of 2 to 3 standard deviations, which somewhat disfavors the interpretation of the 133 GeV feature as a real WIMP signal.
language: eng
source:
identifier: ISSN: 1550-7998 ; E-ISSN: 1550-2368 ; DOI: 10.1103/PhysRevD.88.082002
fulltext: fulltext
issn:
  • 1550-7998
  • 15507998
  • 1550-2368
  • 15502368
url: Link


@attributes
ID193959740
RANK0.07
NO1
SEARCH_ENGINEprimo_central_multiple_fe
SEARCH_ENGINE_TYPEPrimo Central Search Engine
LOCALfalse
PrimoNMBib
record
control
sourcerecordid1084305
sourceidosti_s
recordidTN_osti_s1084305
sourcesystemPC
dbidOTOTI
pqid2075404741
display
typearticle
titleSearch for gamma-ray spectral lines with the Fermi Large Area Telescope and dark matter implications
creatorAckermann, M ; Ajello, M ; Albert, A ; Allafort, A ; Baldini, L ; Barbiellini, G ; Bastieri, D ; Bechtol, K ; Bellazzini, R ; Bissaldi, E ; Bloom, E. D ; Bonamente, E ; Bottacini, E ; Brandt, T. J ; Bregeon, J ; Brigida, M ; Bruel, P ; Buehler, R ; Buson, S ; Caliandro, G. A ; Cameron, R. A ; Caraveo, P. A ; Casandjian, J. M ; Cecchi, C ; Charles, E ; Chaves, R. C. G ; Chekhtman, A ; Chiang, J ; Ciprini, S ; Claus, R ; Cohen-Tanugi, J ; Conrad, J ; Cutini, S ; D’ammando, F ; de Angelis, A ; de Palma, F ; Dermer, C. D ; Digel, S. W ; Di Venere, L ; Drell, P. S ; Drlica-Wagner, A ; Essig, R ; Favuzzi, C ; Fegan, S. J ; Ferrara, E. C ; Focke, W. B ; Franckowiak, A ; Fukazawa, Y ; Funk, S ; Fusco, P ; Gargano, F ; Gasparrini, D ; Germani, S ; Giglietto, N ; Giordano, F ; Giroletti, M ; Glanzman, T ; Godfrey, G ; Gomez-Vargas, G. A ; Grenier, I. A ; Guiriec, S ; Gustafsson, M ; Hadasch, D ; Hayashida, M ; Hill, A. B ; Horan, D ; Hou, X ; Hughes, R. E ; Inoue, Y ; Izaguirre, E ; Jogler, T ; Kamae, T ; Knödlseder, J ; Kuss, M ; Lande, J ; Larsson, S ; Latronico, L ; Longo, F ; Loparco, F ; Lovellette, M. N ; Lubrano, P ; Malyshev, D ; Mayer, M ; Mazziotta, M. N ; Mcenery, J. E ; Michelson, P. F ; Mitthumsiri, W ; Mizuno, T ; Moiseev, A. A ; Monzani, M. E ; Morselli, A ; Moskalenko, I. V ; Murgia, S ; Nakamori, T ; Nemmen, R ; Nuss, E ; Ohsugi, T ; Okumura, A ; Omodei, N ; Orienti, M ; Orlando, E ; Ormes, J. F ; Paneque, D ; Perkins, J. S ; Pesce-Rollins, M ; Piron, F ; Pivato, G ; Rainò, S ; Rando, R ; Razzano, M ; Razzaque, S ; Reimer, A ; Reimer, O ; Romani, R. W ; Sánchez-Conde, M ; Schulz, A ; Sgrò, C ; Siegal-Gaskins, J ; Siskind, E. J ; Snyder, A ; Spandre, G ; Spinelli, P ; Suson, D. J ; Tajima, H ; Takahashi, H ; Thayer, J. G ; Thayer, J. B ; Tibaldo, L ; Tinivella, M ; Tosti, G ; Troja, E ; Uchiyama, Y ; Usher, T. L ; Vandenbroucke, J ; Vasileiou, V ; Vianello, G ; Vitale, V ; Winer, B. L ; Wood, K. S ; Wood, M ; Yang, Z ; Zaharijas, G ; Zimmer, S
contributorSlac National Accelerator Lab., Menlo Park, Ca (United States) (Corporate Author)
ispartofPhysical Review. D, Particles, Fields, Gravitation and Cosmology, 22 October 2013, Vol.88(8)
identifier
subjectAstronomy And Astrophysics ; Astrophysics ; Astro ; Physics
descriptionWeakly interacting massive particles (WIMPs) are a theoretical class of particles that are excellent dark matter candidates. WIMP annihilation or decay may produce essentially monochromatic γ rays detectable by the Fermi Large Area Telescope (LAT) against the astrophysical γ -ray emission of the Galaxy. We have searched for spectral lines in the energy range 5–300 GeV using 3.7 years of data, reprocessed with updated instrument calibrations and an improved energy dispersion model compared to the previous Fermi-LAT Collaboration line searches. We searched in five regions selected to optimize sensitivity to different theoretically motivated dark matter density distributions. We did not find any globally significant lines in our a priori search regions and present 95% confidence limits for annihilation cross sections of self-conjugate WIMPs and decay lifetimes. Our most significant fit occurred at 133 GeV in our smallest search region and had a local significance of 3.3 standard deviations, which translates to a global significance of 1.5 standard deviations. We discuss potential systematic effects in this search, and examine the feature at 133 GeV in detail. We find that the use both of reprocessed data and of additional information in the energy dispersion model contributes to the reduction in significance of the linelike feature near 130 GeV relative to significances reported in other works. We also find that the feature is narrower than the LAT energy resolution at the level of 2 to 3 standard deviations, which somewhat disfavors the interpretation of the 133 GeV feature as a real WIMP signal.
languageeng
source
version5
lds50peer_reviewed
links
openurl$$Topenurl_article
openurlfulltext$$Topenurlfull_article
backlink$$Uhttps://www.osti.gov/servlets/purl/1084305$$EView_record_in_SciTech_Connect
search
creatorcontrib
0Ackermann, M
1Ajello, M
2Albert, A
3Allafort, A
4Baldini, L
5Barbiellini, G
6Bastieri, D
7Bechtol, K
8Bellazzini, R
9Bissaldi, E
10Bloom, E. D
11Bonamente, E
12Bottacini, E
13Brandt, T. J
14Bregeon, J
15Brigida, M
16Bruel, P
17Buehler, R
18Buson, S
19Caliandro, G. A
20Cameron, R. A
21Caraveo, P. A
22Casandjian, J. M
23Cecchi, C
24Charles, E
25Chaves, R. C. G
26Chekhtman, A
27Chiang, J
28Ciprini, S
29Claus, R
30Cohen-Tanugi, J
31Conrad, J
32Cutini, S
33D’ammando, F
34de Angelis, A
35de Palma, F
36Dermer, C. D
37Digel, S. W
38Di Venere, L
39Drell, P. S
40Drlica-Wagner, A
41Essig, R
42Favuzzi, C
43Fegan, S. J
44Ferrara, E. C
45Focke, W. B
46Franckowiak, A
47Fukazawa, Y
48Funk, S
49Fusco, P
50Gargano, F
51Gasparrini, D
52Germani, S
53Giglietto, N
54Giordano, F
55Giroletti, M
56Glanzman, T
57Godfrey, G
58Gomez-Vargas, G. A
59Grenier, I. A
60Guiriec, S
61Gustafsson, M
62Hadasch, D
63Hayashida, M
64Hill, A. B
65Horan, D
66Hou, X
67Hughes, R. E
68Inoue, Y
69Izaguirre, E
70Jogler, T
71Kamae, T
72Knödlseder, J
73Kuss, M
74Lande, J
75Larsson, S
76Latronico, L
77Longo, F
78Loparco, F
79Lovellette, M. N
80Lubrano, P
81Malyshev, D
82Mayer, M
83Mazziotta, M. N
84Mcenery, J. E
85Michelson, P. F
86Mitthumsiri, W
87Mizuno, T
88Moiseev, A. A
89Monzani, M. E
90Morselli, A
91Moskalenko, I. V
92Murgia, S
93Nakamori, T
94Nemmen, R
95Nuss, E
96Ohsugi, T
97Okumura, A
98Omodei, N
99Orienti, M
100...
titleSearch for gamma-ray spectral lines with the Fermi Large Area Telescope and dark matter implications
description

Weakly interacting massive particles (WIMPs) are a theoretical class of particles that are excellent dark matter candidates. WIMP annihilation or decay may produce essentially monochromatic γ rays detectable by the Fermi Large Area Telescope (LAT) against the astrophysical γ -ray emission of the Galaxy. We have searched for spectral lines in the energy range 5–300 GeV using 3.7 years of data, reprocessed with updated instrument calibrations and an improved energy dispersion model compared to the previous Fermi-LAT Collaboration line searches. We searched in five regions selected to optimize sensitivity to different theoretically motivated dark matter density distributions. We did not find any globally significant lines in our a priori search regions and present 95% confidence limits for annihilation cross sections of self-conjugate WIMPs and decay lifetimes. Our most significant fit occurred at 133 GeV in our smallest search region and had a local significance of 3.3 standard deviations, which translates to a global significance of 1.5 standard deviations. We discuss potential systematic effects in this search, and examine the feature at 133 GeV in detail. We find that the use both of reprocessed data and of additional information in the energy dispersion model contributes to the reduction in significance of the linelike feature near 130 GeV relative to significances reported in other works. We also find that the feature is narrower than the LAT energy resolution at the level of 2 to 3 standard deviations, which somewhat disfavors the interpretation of the 133 GeV feature as a real WIMP signal.

subject
0Astronomy And Astrophysics
1Astrophysics
2Astro
3Physics
general
0English
1American Physical Society (APS)
210.1103/PhysRevD.88.082002
3SciTech Connect (U.S. Dept. of Energy - Office of Scientific and Technical Information)
sourceidosti_s
recordidosti_s1084305
issn
01550-7998
115507998
21550-2368
315502368
rsrctypearticle
creationdate2013
addtitlePhysical Review. D, Particles, Fields, Gravitation and Cosmology
searchscope
0osti_full
1osti1
scope
0osti_full
1osti1
lsr44$$EView_record_in_SciTech_Connect
tmp01SciTech Connect (U.S. Dept. of Energy - Office of Scientific and Technical Information)
tmp02OTOTI
contributorSlac National Accelerator Lab., Menlo Park, Ca (United States) (Corporate Author)
startdate20131022
enddate20131022
lsr40Physical Review. D, Particles, Fields, Gravitation and Cosmology, 22 October 2013, Vol.88 (8)
doi10.1103/PhysRevD.88.082002
citationvol 88 issue 8
lsr30VSR-Enriched:[pqid]
sort
titleSearch for gamma-ray spectral lines with the Fermi Large Area Telescope and dark matter implications
authorAckermann, M ; Ajello, M ; Albert, A ; Allafort, A ; Baldini, L ; Barbiellini, G ; Bastieri, D ; Bechtol, K ; Bellazzini, R ; Bissaldi, E ; Bloom, E. D ; Bonamente, E ; Bottacini, E ; Brandt, T. J ; Bregeon, J ; Brigida, M ; Bruel, P ; Buehler, R ; Buson, S ; Caliandro, G. A ; Cameron, R. A ; Caraveo, P. A ; Casandjian, J. M ; Cecchi, C ; Charles, E ; Chaves, R. C. G ; Chekhtman, A ; Chiang, J ; Ciprini, S ; Claus, R ; Cohen-Tanugi, J ; Conrad, J ; Cutini, S ; D’ammando, F ; de Angelis, A ; de Palma, F ; Dermer, C. D ; Digel, S. W ; Di Venere, L ; Drell, P. S ; Drlica-Wagner, A ; Essig, R ; Favuzzi, C ; Fegan, S. J ; Ferrara, E. C ; Focke, W. B ; Franckowiak, A ; Fukazawa, Y ; Funk, S ; Fusco, P ; Gargano, F ; Gasparrini, D ; Germani, S ; Giglietto, N ; Giordano, F ; Giroletti, M ; Glanzman, T ; Godfrey, G ; Gomez-Vargas, G. A ; Grenier, I. A ; Guiriec, S ; Gustafsson, M ; Hadasch, D ; Hayashida, M ; Hill, A. B ; Horan, D ; Hou, X ; Hughes, R. E ; Inoue, Y ; Izaguirre, E ; Jogler, T ; Kamae, T ; Knödlseder, J ; Kuss, M ; Lande, J ; Larsson, S ; Latronico, L ; Longo, F ; Loparco, F ; Lovellette, M. N ; Lubrano, P ; Malyshev, D ; Mayer, M ; Mazziotta, M. N ; Mcenery, J. E ; Michelson, P. F ; Mitthumsiri, W ; Mizuno, T ; Moiseev, A. A ; Monzani, M. E ; Morselli, A ; Moskalenko, I. V ; Murgia, S ; Nakamori, T ; Nemmen, R ; Nuss, E ; Ohsugi, T ; Okumura, A ; Omodei, N ; Orienti, M ; Orlando, E ; Ormes, J. F ; Paneque, D ; Perkins, J. S ; Pesce-Rollins, M ; Piron, F ; Pivato, G ; Rainò, S ; Rando, R ; Razzano, M ; Razzaque, S ; Reimer, A ; Reimer, O ; Romani, R. W ; Sánchez-Conde, M ; Schulz, A ; Sgrò, C ; Siegal-Gaskins, J ; Siskind, E. J ; Snyder, A ; Spandre, G ; Spinelli, P ; Suson, D. J ; Tajima, H ; Takahashi, H ; Thayer, J. G ; Thayer, J. B ; Tibaldo, L ; Tinivella, M ; Tosti, G ; Troja, E ; Uchiyama, Y ; Usher, T. L ; Vandenbroucke, J ; Vasileiou, V ; Vianello, G ; Vitale, V ; Winer, B. L ; Wood, K. S ; Wood, M ; Yang, Z ; Zaharijas, G ; Zimmer, S
creationdate20131022
lso0120131022
facets
frbrgroupid861071446760720155
frbrtype5
newrecords20190821
languageeng
topic
0Astronomy And Astrophysics
1Astrophysics
2Astro
3Physics
collectionSciTech Connect (U.S. Dept. of Energy - Office of Scientific and Technical Information)
prefilterarticles
rsrctypearticles
creatorcontrib
0Ackermann, M
1Ajello, M
2Albert, A
3Allafort, A
4Baldini, L
5Barbiellini, G
6Bastieri, D
7Bechtol, K
8Bellazzini, R
9Bissaldi, E
10Bloom, E. D
11Bonamente, E
12Bottacini, E
13Brandt, T. J
14Bregeon, J
15Brigida, M
16Bruel, P
17Buehler, R
18Buson, S
19Caliandro, G. A
20Cameron, R. A
21Caraveo, P. A
22Casandjian, J. M
23Cecchi, C
24Charles, E
25Chaves, R. C. G
26Chekhtman, A
27Chiang, J
28Ciprini, S
29Claus, R
30Cohen-Tanugi, J
31Conrad, J
32Cutini, S
33D’ammando, F
34de Angelis, A
35de Palma, F
36Dermer, C. D
37Digel, S. W
38Di Venere, L
39Drell, P. S
40Drlica-Wagner, A
41Essig, R
42Favuzzi, C
43Fegan, S. J
44Ferrara, E. C
45Focke, W. B
46Franckowiak, A
47Fukazawa, Y
48Funk, S
49Fusco, P
50Gargano, F
51Gasparrini, D
52Germani, S
53Giglietto, N
54Giordano, F
55Giroletti, M
56Glanzman, T
57Godfrey, G
58Gomez-Vargas, G. A
59Grenier, I. A
60Guiriec, S
61Gustafsson, M
62Hadasch, D
63Hayashida, M
64Hill, A. B
65Horan, D
66Hou, X
67Hughes, R. E
68Inoue, Y
69Izaguirre, E
70Jogler, T
71Kamae, T
72Knödlseder, J
73Kuss, M
74Lande, J
75Larsson, S
76Latronico, L
77Longo, F
78Loparco, F
79Lovellette, M. N
80Lubrano, P
81Malyshev, D
82Mayer, M
83Mazziotta, M. N
84Mcenery, J. E
85Michelson, P. F
86Mitthumsiri, W
87Mizuno, T
88Moiseev, A. A
89Monzani, M. E
90Morselli, A
91Moskalenko, I. V
92Murgia, S
93Nakamori, T
94Nemmen, R
95Nuss, E
96Ohsugi, T
97Okumura, A
98Omodei, N
99Orienti, M
100...
jtitlePhysical Review. D, Particles, Fields, Gravitation and Cosmology
creationdate2013
toplevelpeer_reviewed
delivery
delcategoryRemote Search Resource
fulltextfulltext
addata
aulast
0Ackermann
1Ajello
2Albert
3Allafort
4Baldini
5Barbiellini
6Bastieri
7Bechtol
8Bellazzini
9Bissaldi
10Bloom
11Bonamente
12Bottacini
13Brandt
14Bregeon
15Brigida
16Bruel
17Buehler
18Buson
19Caliandro
20Cameron
21Caraveo
22Casandjian
23Cecchi
24Charles
25Chaves
26Chekhtman
27Chiang
28Ciprini
29Claus
30Cohen-Tanugi
31Conrad
32Cutini
33D’ammando
34de Angelis
35de Palma
36Dermer
37Digel
38Di Venere
39Drell
40Drlica-Wagner
41Essig
42Favuzzi
43Fegan
44Ferrara
45Focke
46Franckowiak
47Fukazawa
48Funk
49Fusco
50Gargano
51Gasparrini
52Germani
53Giglietto
54Giordano
55Giroletti
56Glanzman
57Godfrey
58Gomez-Vargas
59Grenier
60Guiriec
61Gustafsson
62Hadasch
63Hayashida
64Hill
65Horan
66Hou
67Hughes
68Inoue
69Izaguirre
70Jogler
71Kamae
72Knödlseder
73Kuss
74Lande
75Larsson
76Latronico
77Longo
78Loparco
79Lovellette
80Lubrano
81Malyshev
82Mayer
83Mazziotta
84Mcenery
85Michelson
86Mitthumsiri
87Mizuno
88Moiseev
89Monzani
90Morselli
91Moskalenko
92Murgia
93Nakamori
94Nemmen
95Nuss
96Ohsugi
97Okumura
98Omodei
99Orienti
100...
aufirst
0M
1A
2L
3G
4D
5K
6R
7E
8E. D
9T. J
10J
11P
12S
13G. A
14R. A
15P. A
16J. M
17C
18R. C. G
19F
20C. D
21S. W
22P. S
23S. J
24E. C
25W. B
26Y
27N
28T
29I. A
30A. B
31X
32R. E
33M. N
34J. E
35P. F
36W
37A. A
38M. E
39I. V
40J. F
41J. S
42O
43R. W
44E. J
45D. J
46H
47J. G
48J. B
49T. L
50V
51B. L
52K. S
53Z
54Menlo Park, Ca
auinitM
auinit1M
au
0Ackermann, M
1Ajello, M
2Albert, A
3Allafort, A
4Baldini, L
5Barbiellini, G
6Bastieri, D
7Bechtol, K
8Bellazzini, R
9Bissaldi, E
10Bloom, E. D
11Bonamente, E
12Bottacini, E
13Brandt, T. J
14Bregeon, J
15Brigida, M
16Bruel, P
17Buehler, R
18Buson, S
19Caliandro, G. A
20Cameron, R. A
21Caraveo, P. A
22Casandjian, J. M
23Cecchi, C
24Charles, E
25Chaves, R. C. G
26Chekhtman, A
27Chiang, J
28Ciprini, S
29Claus, R
30Cohen-Tanugi, J
31Conrad, J
32Cutini, S
33D’ammando, F
34de Angelis, A
35de Palma, F
36Dermer, C. D
37Digel, S. W
38Di Venere, L
39Drell, P. S
40Drlica-Wagner, A
41Essig, R
42Favuzzi, C
43Fegan, S. J
44Ferrara, E. C
45Focke, W. B
46Franckowiak, A
47Fukazawa, Y
48Funk, S
49Fusco, P
50Gargano, F
51Gasparrini, D
52Germani, S
53Giglietto, N
54Giordano, F
55Giroletti, M
56Glanzman, T
57Godfrey, G
58Gomez-Vargas, G. A
59Grenier, I. A
60Guiriec, S
61Gustafsson, M
62Hadasch, D
63Hayashida, M
64Hill, A. B
65Horan, D
66Hou, X
67Hughes, R. E
68Inoue, Y
69Izaguirre, E
70Jogler, T
71Kamae, T
72Knödlseder, J
73Kuss, M
74Lande, J
75Larsson, S
76Latronico, L
77Longo, F
78Loparco, F
79Lovellette, M. N
80Lubrano, P
81Malyshev, D
82Mayer, M
83Mazziotta, M. N
84Mcenery, J. E
85Michelson, P. F
86Mitthumsiri, W
87Mizuno, T
88Moiseev, A. A
89Monzani, M. E
90Morselli, A
91Moskalenko, I. V
92Murgia, S
93Nakamori, T
94Nemmen, R
95Nuss, E
96Ohsugi, T
97Okumura, A
98Omodei, N
99Orienti, M
100...
addauSlac National Accelerator Lab., Menlo Park, Ca
atitleSearch for gamma-ray spectral lines with the Fermi Large Area Telescope and dark matter implications
jtitlePhysical Review. D, Particles, Fields, Gravitation and Cosmology
risdate20131022
volume88
issue8
issn1550-7998
eissn1550-2368
formatjournal
genrearticle
ristypeJOUR
abstract

Weakly interacting massive particles (WIMPs) are a theoretical class of particles that are excellent dark matter candidates. WIMP annihilation or decay may produce essentially monochromatic γ rays detectable by the Fermi Large Area Telescope (LAT) against the astrophysical γ -ray emission of the Galaxy. We have searched for spectral lines in the energy range 5–300 GeV using 3.7 years of data, reprocessed with updated instrument calibrations and an improved energy dispersion model compared to the previous Fermi-LAT Collaboration line searches. We searched in five regions selected to optimize sensitivity to different theoretically motivated dark matter density distributions. We did not find any globally significant lines in our a priori search regions and present 95% confidence limits for annihilation cross sections of self-conjugate WIMPs and decay lifetimes. Our most significant fit occurred at 133 GeV in our smallest search region and had a local significance of 3.3 standard deviations, which translates to a global significance of 1.5 standard deviations. We discuss potential systematic effects in this search, and examine the feature at 133 GeV in detail. We find that the use both of reprocessed data and of additional information in the energy dispersion model contributes to the reduction in significance of the linelike feature near 130 GeV relative to significances reported in other works. We also find that the feature is narrower than the LAT energy resolution at the level of 2 to 3 standard deviations, which somewhat disfavors the interpretation of the 133 GeV feature as a real WIMP signal.

copUnited States
pubAmerican Physical Society (APS)
doi10.1103/PhysRevD.88.082002
oafree_for_read
date2013-10-22