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16 results on '"Păvălaş, GE"'

1. Search for Multimessenger Sources of Gravitational Waves and High-energy Neutrinos with Advanced LIGO during Its First Observing Run, ANTARES, and IceCube

Author

Albert, A, André, M, Anghinolfi, M, Ardid, M, Aubert, J-J, Aublin, J, Avgitas, T, Baret, B, Barrios-Martí, J, Basa, S, Belhorma, B, Bertin, V, Biagi, S, Bormuth, R, Boumaaza, J, Bourret, S, Bouwhuis, MC, Brânzaş, H, Bruijn, R, Brunner, J, Busto, J, Capone, A, Caramete, L, Carr, J, Celli, S, Chabab, M, Moursli, R Cherkaoui El, Chiarusi, T, Circella, M, Coelho, JAB, Coleiro, A, Colomer, M, Coniglione, R, Costantini, H, Coyle, P, Creusot, A, Díaz, AF, Deschamps, A, Distefano, C, Di Palma, I, Domi, A, Donà, R, Donzaud, C, Dornic, D, Drouhin, D, Eberl, T, Bojaddaini, I El, Khayati, N El, Elsässer, D, Enzenhöfer, A, Ettahiri, A, Fassi, F, Felis, I, Fermani, P, Ferrara, G, Fusco, L, Gay, P, Glotin, H, Grégoire, T, Ruiz, R Gracia, Graf, K, Hallmann, S, van Haren, H, Heijboer, AJ, Hello, Y, Hernández-Rey, JJ, Hößl, J, Hofestädt, J, Illuminati, G, de Jong, M, Jongen, M, Kadler, M, Kalekin, O, Katz, U, Khan-Chowdhury, NR, Kouchner, A, Kreter, M, Kreykenbohm, I, Kulikovskiy, V, Lachaud, C, Lahmann, R, Lefèvre, D, Leonora, E, Levi, G, Lotze, M, Loucatos, S, Maggi, G, Marcelin, M, Margiotta, A, Marinelli, A, Martínez-Mora, JA, Mele, R, Melis, K, Migliozzi, P, Moussa, A, Navas, S, Nezri, E, Nuñez, A, Organokov, M, and Păvălaş, GE

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Astronomical Sciences, Physical Sciences, gravitational waves, neutrinos, astro-ph.HE, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Physical Chemistry (incl. Structural), Astronomy & Astrophysics, Astronomical sciences, Particle and high energy physics, Space sciences
Abstract

Astrophysical sources of gravitational waves, such as binary neutron star and black hole mergers or core-collapse supernovae, can drive relativistic outflows, giving rise to non-thermal high-energy emission. High-energy neutrinos are signatures of such outflows. The detection of gravitational waves and high-energy neutrinos from common sources could help establish the connection between the dynamics of the progenitor and the properties of the outflow. We searched for associated emission of gravitational waves and high-energy neutrinos from astrophysical transients with minimal assumptions using data from Advanced LIGO from its first observing run O1, and data from the Antares and IceCube neutrino observatories from the same time period. We focused on candidate events whose astrophysical origins could not be determined from a single messenger. We found no significant coincident candidate, which we used to constrain the rate density of astrophysical sources dependent on their gravitational-wave and neutrino emission processes.

Published
2019

2. Joint Constraints on Galactic Diffuse Neutrino Emission from the ANTARES and IceCube Neutrino Telescopes

Author

Albert, A, André, M, Anghinolfi, M, Ardid, M, Aubert, J-J, Aublin, J, Avgitas, T, Baret, B, Barrios-Martí, J, Basa, S, Belhorma, B, Bertin, V, Biagi, S, Bormuth, R, Boumaaza, J, Bourret, S, Bouwhuis, MC, Brânzaş, H, Bruijn, R, Brunner, J, Busto, J, Capone, A, Caramete, L, Carr, J, Celli, S, Chabab, M, Moursli, R Cherkaoui El, Chiarusi, T, Circella, M, Coelho, JAB, Coleiro, A, Colomer, M, Coniglione, R, Costantini, H, Coyle, P, Creusot, A, Díaz, AF, Deschamps, A, Distefano, C, Di Palma, I, Domi, A, Donzaud, C, Dornic, D, Drouhin, D, Eberl, T, Bojaddaini, I El, Khayati, N El, Elsässer, D, Enzenhöfer, A, Ettahiri, A, Fassi, F, Felis, I, Fermani, P, Ferrara, G, Fusco, L, Gay, P, Glotin, H, Grégoire, T, Ruiz, R Gracia, Graf, K, Hallmann, S, van Haren, H, Heijboer, AJ, Hello, Y, Hernández-Rey, JJ, Hößl, J, Hofestädt, J, Illuminati, G, James, CW, de Jong, M, Jongen, M, Kadler, M, Kalekin, O, Katz, U, Khan-Chowdhury, NR, Kouchner, A, Kreter, M, Kreykenbohm, I, Kulikovskiy, V, Lachaud, C, Lahmann, R, Lefèvre, D, Leonora, E, Levi, G, Lotze, M, Loucatos, S, Marcelin, M, Margiotta, A, Marinelli, A, Martínez-Mora, JA, Mele, R, Melis, K, Migliozzi, P, Moussa, A, Navas, S, Nezri, E, Nuñez, A, Organokov, M, Păvălaş, GE, and Pellegrino, C

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, astro-ph.HE, Astronomical and Space Sciences, Astronomy & Astrophysics, Astronomical sciences, Space sciences
Abstract

The existence of diffuse Galactic neutrino production is expected from cosmic-ray interactions with Galactic gas and radiation fields. Thus, neutrinos are a unique messenger offering the opportunity to test the products of Galactic cosmic-ray interactions up to energies of hundreds of TeV. Here we present a search for this production using ten years of Astronomy with a Neutrino Telescope and Abyss environmental RESearch (ANTARES) track and shower data, as well as seven years of IceCube track data. The data are combined into a joint likelihood test for neutrino emission according to the KRAg model assuming a 5 PeV per nucleon Galactic cosmic-ray cutoff. No significant excess is found. As a consequence, the limits presented in this Letter start constraining the model parameter space for Galactic cosmic-ray production and transport.

Published
2018

3. Search for High-energy Neutrinos from Binary Neutron Star Merger GW170817 with ANTARES, IceCube, and the Pierre Auger Observatory

Author

Albert, A, André, M, Anghinolfi, M, Ardid, M, Aubert, J-J, Aublin, J, Avgitas, T, Baret, B, Barrios-Martí, J, Basa, S, Belhorma, B, Bertin, V, Biagi, S, Bormuth, R, Bourret, S, Bouwhuis, MC, Brânzaş, H, Bruijn, R, Brunner, J, Busto, J, Capone, A, Caramete, L, Carr, J, Celli, S, Moursli, R Cherkaoui El, Chiarusi, T, Circella, M, Coelho, JAB, Coleiro, A, Coniglione, R, Costantini, H, Coyle, P, Creusot, A, Díaz, AF, Deschamps, A, De Bonis, G, Distefano, C, Di Palma, I, Domi, A, Donzaud, C, Dornic, D, Drouhin, D, Eberl, T, Bojaddaini, I El, Khayati, N El, Elsässer, D, Enzenhöfer, A, Ettahiri, A, Fassi, F, Felis, I, Fusco, LA, Gay, P, Giordano, V, Glotin, H, Grégoire, T, Ruiz, R Gracia, Graf, K, Hallmann, S, van Haren, H, Heijboer, AJ, Hello, Y, Hernández-Rey, JJ, Hößl, J, Hofestädt, J, Illuminati, G, James, CW, de Jong, M, Jongen, M, Kadler, M, Kalekin, O, Katz, U, Kießling, D, Kouchner, A, Kreter, M, Kreykenbohm, I, Kulikovskiy, V, Lachaud, C, Lahmann, R, Lefèvre, D, Leonora, E, Lotze, M, Loucatos, S, Marcelin, M, Margiotta, A, Marinelli, A, Martínez-Mora, JA, Mele, R, Melis, K, Michael, T, Migliozzi, P, Moussa, A, Navas, S, Nezri, E, Organokov, M, Păvălaş, GE, Pellegrino, C, Perrina, C, Piattelli, P, Popa, V, and Pradier, T

Subjects
Nuclear and Plasma Physics, Astronomical Sciences, Physical Sciences, gamma-ray burst: general, gravitational waves, neutrinos, astro-ph.HE, Astronomical and Space Sciences, Astronomy & Astrophysics, Astronomical sciences, Space sciences
Abstract

The Advanced LIGO and Advanced Virgo observatories recently discovered gravitational waves from a binary neutron star inspiral. A short gamma-ray burst (GRB) that followed the merger of this binary was also recorded by the Fermi Gamma-ray Burst Monitor (Fermi-GBM), and the Anti-Coincidence Shield for the Spectrometer for the International Gamma-Ray Astrophysics Laboratory (INTEGRAL), indicating particle acceleration by the source. The precise location of the event was determined by optical detections of emission following the merger. We searched for high-energy neutrinos from the merger in the GeV-EeV energy range using the Antares, IceCube, and Pierre Auger Observatories. No neutrinos directionally coincident with the source were detected within ± 500 s around the merger time. Additionally, no MeV neutrino burst signal was detected coincident with the merger. We further carried out an extended search in the direction of the source for high-energy neutrinos within the 14 day period following the merger, but found no evidence of emission. We used these results to probe dissipation mechanisms in relativistic outflows driven by the binary neutron star merger. The non-detection is consistent with model predictions of short GRBs observed at a large off-axis angle.

Published
2017

4. Search for high-energy neutrinos from gravitational wave event GW151226 and candidate LVT151012 with ANTARES and IceCube

Author

Albert, A, André, M, Anghinolfi, M, Anton, G, Ardid, M, Aubert, J-J, Avgitas, T, Baret, B, Barrios-Martí, J, Basa, S, Bertin, V, Biagi, S, Bormuth, R, Bourret, S, Bouwhuis, MC, Bruijn, R, Brunner, J, Busto, J, Capone, A, Caramete, L, Carr, J, Celli, S, Chiarusi, T, Circella, M, Coelho, JAB, Coleiro, A, Coniglione, R, Costantini, H, Coyle, P, Creusot, A, Deschamps, A, De Bonis, G, Distefano, C, Di Palma, I, Donzaud, C, Dornic, D, Drouhin, D, Eberl, T, Bojaddaini, I El, Elsässer, D, Enzenhöfer, A, Felis, I, Fusco, LA, Galatà, S, Gay, P, Giordano, V, Glotin, H, Grégoire, T, Ruiz, R Gracia, Graf, K, Hallmann, S, van Haren, H, Heijboer, AJ, Hello, Y, Hernández-Rey, JJ, Hößl, J, Hofestädt, J, Hugon, C, Illuminati, G, James, CW, de Jong, M, Jongen, M, Kadler, M, Kalekin, O, Katz, U, Kießling, D, Kouchner, A, Kreter, M, Kreykenbohm, I, Kulikovskiy, V, Lachaud, C, Lahmann, R, Lefèvre, D, Leonora, E, Lotze, M, Loucatos, S, Marcelin, M, Margiotta, A, Marinelli, A, Martínez-Mora, JA, Mathieu, A, Mele, R, Melis, K, Michael, T, Migliozzi, P, Moussa, A, Nezri, E, Păvălaş, GE, Pellegrino, C, Perrina, C, Piattelli, P, Popa, V, Pradier, T, Quinn, L, Racca, C, Riccobene, G, Sánchez-Losa, A, Saldaña, M, Salvadori, I, and Samtleben, DFE

Subjects
astro-ph.HE, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract

The Advanced LIGO observatories detected gravitational waves from two binary black hole mergers during their first observation run (O1). We present a high-energy neutrino follow-up search for the second gravitational wave event, GW151226, as well as for gravitational wave candidate LVT151012. We find two and four neutrino candidates detected by IceCube, and one and zero detected by Antares, within ±500 s around the respective gravitational wave signals, consistent with the expected background rate. None of these neutrino candidates are found to be directionally coincident with GW151226 or LVT151012. We use nondetection to constrain isotropic-equivalent high-energy neutrino emission from GW151226, adopting the GW event's 3D localization, to less than 2×1051-2×1054 erg.

Published
2017

5. High-energy neutrino follow-up search of gravitational wave event GW150914 with ANTARES and IceCube

Author

Adrián-Martínez, S, Albert, A, André, M, Anghinolfi, M, Anton, G, Ardid, M, Aubert, J-J, Avgitas, T, Baret, B, Barrios-Martí, J, Basa, S, Bertin, V, Biagi, S, Bormuth, R, Bouwhuis, MC, Bruijn, R, Brunner, J, Busto, J, Capone, A, Caramete, L, Carr, J, Celli, S, Chiarusi, T, Circella, M, Coleiro, A, Coniglione, R, Costantini, H, Coyle, P, Creusot, A, Deschamps, A, De Bonis, G, Distefano, C, Donzaud, C, Dornic, D, Drouhin, D, Eberl, T, Bojaddaini, I El, Elsässer, D, Enzenhöfer, A, Fehn, K, Felis, I, Fusco, LA, Galatà, S, Gay, P, Geißelsöder, S, Geyer, K, Giordano, V, Gleixner, A, Glotin, H, Gracia-Ruiz, R, Graf, K, Hallmann, S, van Haren, H, Heijboer, AJ, Hello, Y, Hernández-Rey, JJ, Hößl, J, Hofestädt, J, Hugon, C, Illuminati, G, James, CW, de Jong, M, Jongen, M, Kadler, M, Kalekin, O, Katz, U, Kießling, D, Kouchner, A, Kreter, M, Kreykenbohm, I, Kulikovskiy, V, Lachaud, C, Lahmann, R, Lefèvre, D, Leonora, E, Loucatos, S, Marcelin, M, Margiotta, A, Marinelli, A, Martínez-Mora, JA, Mathieu, A, Melis, K, Michael, T, Migliozzi, P, Moussa, A, Mueller, C, Nezri, E, Păvălaş, GE, Pellegrino, C, Perrina, C, Piattelli, P, Popa, V, Pradier, T, Racca, C, Riccobene, G, Roensch, K, Saldaña, M, Samtleben, DFE, Sánchez-Losa, A, and Sanguineti, M

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, astro-ph.HE
Abstract

We present the high-energy-neutrino follow-up observations of the first gravitational wave transient GW150914 observed by the Advanced LIGO detectors on September 14, 2015. We search for coincident neutrino candidates within the data recorded by the IceCube and Antares neutrino detectors. A possible joint detection could be used in targeted electromagnetic follow-up observations, given the significantly better angular resolution of neutrino events compared to gravitational waves. We find no neutrino candidates in both temporal and spatial coincidence with the gravitational wave event. Within ±500 s of the gravitational wave event, the number of neutrino candidates detected by IceCube and Antares were three and zero, respectively. This is consistent with the expected atmospheric background, and none of the neutrino candidates were directionally coincident with GW150914. We use this nondetection to constrain neutrino emission from the gravitational-wave event.

Published
2016

6. THE FIRST COMBINED SEARCH FOR NEUTRINO POINT-SOURCES IN THE SOUTHERN HEMISPHERE WITH THE ANTARES AND ICECUBE NEUTRINO TELESCOPES

Author

Adrián-Martínez, S, Albert, A, André, M, Anton, G, Ardid, M, Aubert, J-J, Baret, B, Barrios-Martí, J, Basa, S, Bertin, V, Biagi, S, Bormuth, R, Bouwhuis, MC, Bruijn, R, Brunner, J, Busto, J, Capone, A, Caramete, L, Carr, J, Chiarusi, T, Circella, M, Coniglione, R, Costantini, H, Coyle, P, Creusot, A, Dekeyser, I, Deschamps, A, De Bonis, G, Distefano, C, Donzaud, C, Dornic, D, Drouhin, D, Dumas, A, Eberl, T, Elsässer, D, Enzenhöfer, A, Fehn, K, Felis, I, Fermani, P, Folger, F, Fusco, LA, Galatà, S, Gay, P, Geißelsöder, S, Geyer, K, Giordano, V, Gleixner, A, Gracia-Ruiz, R, Graf, K, Hallmann, S, van Haren, H, Heijboer, AJ, Hello, Y, Hernández-Rey, JJ, Hößl, J, Hofestädt, J, Hugon, C, James, CW, de Jong, M, Kadler, M, Kalekin, O, Katz, U, Kießling, D, Kooijman, P, Kouchner, A, Kreter, M, Kreykenbohm, I, Kulikovskiy, V, Lahmann, R, Lefèvre, D, Leonora, E, Loucatos, S, Marcelin, M, Margiotta, A, Marinelli, A, Martínez-Mora, JA, Mathieu, A, Michael, T, Migliozzi, P, Moussa, A, Mueller, C, Nezri, E, Păvălaş, GE, Pellegrino, C, Perrina, C, Piattelli, P, Popa, V, Pradier, T, Racca, C, Riccobene, G, Richter, R, Roensch, K, Saldaña, M, Samtleben, DFE, Sánchez-Losa, A, Sanguineti, M, Sapienza, P, Schmid, J, Schnabel, J, and Schüssler, F

Subjects
astroparticle physics, neutrinos, hep-ex, astro-ph.HE, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Physical Chemistry (incl. Structural), Astronomy & Astrophysics
Abstract

We present the results of searches for point-like sources of neutrinos based on the first combined analysis of data from both the ANTARES and IceCube neutrino telescopes. The combination of both detectors, which differ in size and location, forms a window in the southern sky where the sensitivity to point sources improves by up to a factor of 2 compared with individual analyses. Using data recorded by ANTARES from 2007 to 2012, and by IceCube from 2008 to 2011, we search for sources of neutrino emission both across the southern sky and from a preselected list of candidate objects. No significant excess over background has been found in these searches, and flux upper limits for the candidate sources are presented for E -2.5 and E -2 power-law spectra with different energy cut-offs.

Published
2016

7. Erratum: First Search for Dyons with the Full MoEDAL Trapping Detector in 13 TeV pp Collisions [Phys. Rev. Lett. 126, 071801 (2021)].

Author

Acharya B, Alexandre J, Benes P, Bergmann B, Bernabéu J, Bevan A, Branzas H, Burian P, Campbell M, Cecchini S, Cho YM, de Montigny M, De Roeck A, Ellis JR, El Sawy M, Fairbairn M, Felea D, Frank M, Hays J, Hirt AM, Janecek J, Kalliokoski M, Korzenev A, Lacarrère DH, Leroy C, Levi G, Lionti A, Mamuzic J, Maulik A, Margiotta A, Mauri N, Mavromatos NE, Mermod P, Mieskolainen M, Millward L, Mitsou VA, Orava R, Ostrovskiy I, Ouimet PP, Papavassiliou J, Parker B, Patrizii L, Păvălaş GE, Pinfold JL, Popa LA, Popa V, Pozzato M, Pospisil S, Rajantie A, Ruiz de Austri R, Sahnoun Z, Sakellariadou M, Santra A, Sarkar S, Semenoff G, Shaa A, Sirri G, Sliwa K, Soluk R, Spurio M, Staelens M, Suk M, Tenti M, Togo V, Tuszyński JA, Upreti A, Vento V, Vives O, and Wall A

Abstract

This corrects the article DOI: 10.1103/PhysRevLett.126.071801.

Published
2024
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8. MoEDAL Search in the CMS Beam Pipe for Magnetic Monopoles Produced via the Schwinger Effect.

Author

Acharya B, Alexandre J, Behera SC, Benes P, Bergmann B, Bertolucci S, Bevan A, Brancaccio R, Branzas H, Burian P, Campbell M, Cecchini S, Cho YM, de Montigny M, De Roeck A, Ellis JR, Fairbairn M, Felea D, Frank M, Gould O, Hays J, Hirt AM, Ho DL, Hung PQ, Janecek J, Kalliokoski M, Lacarrère DH, Leroy C, Levi G, Margiotta A, Maselek R, Maulik A, Mauri N, Mavromatos NE, Millward L, Mitsou VA, Musumeci E, Ostrovskiy I, Ouimet PP, Papavassiliou J, Patrizii L, Păvălaş GE, Pinfold JL, Popa LA, Popa V, Pozzato M, Pospisil S, Rajantie A, Ruiz de Austri R, Sahnoun Z, Sakellariadou M, Sakurai K, Sarkar S, Semenoff G, Shaa A, Sirri G, Sliwa K, Soluk R, Spurio M, Staelens M, Suk M, Tenti M, Togo V, Tuszyński JA, Upreti A, Vento V, and Vives O

Abstract

We report on a search for magnetic monopoles (MMs) produced in ultraperipheral Pb-Pb collisions during Run 1 of the LHC. The beam pipe surrounding the interaction region of the CMS experiment was exposed to 184.07  μb^{-1} of Pb-Pb collisions at 2.76 TeV center-of-mass energy per collision in December 2011, before being removed in 2013. It was scanned by the MoEDAL experiment using a SQUID magnetometer to search for trapped MMs. No MM signal was observed. The two distinctive features of this search are the use of a trapping volume very close to the collision point and ultrahigh magnetic fields generated during the heavy-ion run that could produce MMs via the Schwinger effect. These two advantages allowed setting the first reliable, world-leading mass limits on MMs with high magnetic charge. In particular, the established limits are the strongest available in the range between 2 and 45 Dirac units, excluding MMs with masses of up to 80 GeV at a 95% confidence level.

Published
2024
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9. Search for magnetic monopoles produced via the Schwinger mechanism.

Author

Acharya B, Alexandre J, Benes P, Bergmann B, Bertolucci S, Bevan A, Branzas H, Burian P, Campbell M, Cho YM, de Montigny M, De Roeck A, Ellis JR, Sawy ME, Fairbairn M, Felea D, Frank M, Gould O, Hays J, Hirt AM, Ho DL, Hung PQ, Janecek J, Kalliokoski M, Korzenev A, Lacarrère DH, Leroy C, Levi G, Lionti A, Maulik A, Margiotta A, Mauri N, Mavromatos NE, Mermod P, Millward L, Mitsou VA, Ostrovskiy I, Ouimet PP, Papavassiliou J, Parker B, Patrizii L, Păvălaş GE, Pinfold JL, Popa LA, Popa V, Pozzato M, Pospisil S, Rajantie A, de Austri RR, Sahnoun Z, Sakellariadou M, Santra A, Sarkar S, Semenoff G, Shaa A, Sirri G, Sliwa K, Soluk R, Spurio M, Staelens M, Suk M, Tenti M, Togo V, Tuszyn'ski JA, Upreti A, Vento V, and Vives O

Abstract

Electrically charged particles can be created by the decay of strong enough electric fields, a phenomenon known as the Schwinger mechanism 1 . By electromagnetic duality, a sufficiently strong magnetic field would similarly produce magnetic monopoles, if they exist 2 . Magnetic monopoles are hypothetical fundamental particles that are predicted by several theories beyond the standard model 3-7 but have never been experimentally detected. Searching for the existence of magnetic monopoles via the Schwinger mechanism has not yet been attempted, but it is advantageous, owing to the possibility of calculating its rate through semi-classical techniques without perturbation theory, as well as that the production of the magnetic monopoles should be enhanced by their finite size 8,9 and strong coupling to photons 2,10 . Here we present a search for magnetic monopole production by the Schwinger mechanism in Pb-Pb heavy ion collisions at the Large Hadron Collider, producing the strongest known magnetic fields in the current Universe 11 . It was conducted by the MoEDAL experiment, whose trapping detectors were exposed to 0.235 per nanobarn, or approximately 1.8 × 10 9 , of Pb-Pb collisions with 5.02-teraelectronvolt center-of-mass energy per collision in November 2018. A superconducting quantum interference device (SQUID) magnetometer scanned the trapping detectors of MoEDAL for the presence of magnetic charge, which would induce a persistent current in the SQUID. Magnetic monopoles with integer Dirac charges of 1, 2 and 3 and masses up to 75 gigaelectronvolts per speed of light squared were excluded by the analysis at the 95% confidence level. This provides a lower mass limit for finite-size magnetic monopoles from a collider search and greatly extends previous mass bounds., (© 2022. The Author(s), under exclusive licence to Springer Nature Limited.)

Published
2022
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10. First Search for Dyons with the Full MoEDAL Trapping Detector in 13 TeV pp Collisions.

Author

Acharya B, Alexandre J, Benes P, Bergmann B, Bernabéu J, Bevan A, Branzas H, Burian P, Campbell M, Cecchini S, Cho YM, de Montigny M, De Roeck A, Ellis JR, El Sawy M, Fairbairn M, Felea D, Frank M, Hays J, Hirt AM, Janecek J, Kalliokoski M, Korzenev A, Lacarrère DH, Leroy C, Levi G, Lionti A, Mamuzic J, Maulik A, Margiotta A, Mauri N, Mavromatos NE, Mermod P, Mieskolainen M, Millward L, Mitsou VA, Orava R, Ostrovskiy I, Ouimet PP, Papavassiliou J, Parker B, Patrizii L, Păvălaş GE, Pinfold JL, Popa LA, Popa V, Pozzato M, Pospisil S, Rajantie A, Ruiz de Austri R, Sahnoun Z, Sakellariadou M, Santra A, Sarkar S, Semenoff G, Shaa A, Sirri G, Sliwa K, Soluk R, Spurio M, Staelens M, Suk M, Tenti M, Togo V, Tuszyński JA, Upreti A, Vento V, Vives O, and Wall A

Abstract

The MoEDAL trapping detector consists of approximately 800 kg of aluminum volumes. It was exposed during run 2 of the LHC program to 6.46  fb^{-1} of 13 TeV proton-proton collisions at the LHCb interaction point. Evidence for dyons (particles with electric and magnetic charge) captured in the trapping detector was sought by passing the aluminum volumes comprising the detector through a superconducting quantum interference device (SQUID) magnetometer. The presence of a trapped dyon would be signaled by a persistent current induced in the SQUID magnetometer. On the basis of a Drell-Yan production model, we exclude dyons with a magnetic charge ranging up to five Dirac charges (5g_{D}) and an electric charge up to 200 times the fundamental electric charge for mass limits in the range 870-3120 GeV and also monopoles with magnetic charge up to and including 5g_{D} with mass limits in the range 870-2040 GeV.

Published
2021
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11. Magnetic Monopole Search with the Full MoEDAL Trapping Detector in 13 TeV pp Collisions Interpreted in Photon-Fusion and Drell-Yan Production.

Author

Acharya B, Alexandre J, Baines S, Benes P, Bergmann B, Bernabéu J, Bevan A, Branzas H, Campbell M, Cecchini S, Cho YM, de Montigny M, De Roeck A, Ellis JR, El Sawy M, Fairbairn M, Felea D, Frank M, Hays J, Hirt AM, Janecek J, Kim DW, Korzenev A, Lacarrère DH, Lee SC, Leroy C, Levi G, Lionti A, Mamuzic J, Margiotta A, Mauri N, Mavromatos NE, Mermod P, Mieskolainen M, Millward L, Mitsou VA, Orava R, Ostrovskiy I, Papavassiliou J, Parker B, Patrizii L, Păvălaş GE, Pinfold JL, Popa V, Pozzato M, Pospisil S, Rajantie A, Ruiz de Austri R, Sahnoun Z, Sakellariadou M, Santra A, Sarkar S, Semenoff G, Shaa A, Sirri G, Sliwa K, Soluk R, Spurio M, Staelens M, Suk M, Tenti M, Togo V, Tuszyński JA, Vento V, Vives O, Vykydal Z, Wall A, and Zgura IS

Abstract

MoEDAL is designed to identify new physics in the form of stable or pseudostable highly ionizing particles produced in high-energy Large Hadron Collider (LHC) collisions. Here we update our previous search for magnetic monopoles in Run 2 using the full trapping detector with almost four times more material and almost twice more integrated luminosity. For the first time at the LHC, the data were interpreted in terms of photon-fusion monopole direct production in addition to the Drell-Yan-like mechanism. The MoEDAL trapping detector, consisting of 794 kg of aluminum samples installed in the forward and lateral regions, was exposed to 4.0  fb^{-1} of 13 TeV proton-proton collisions at the LHCb interaction point and analyzed by searching for induced persistent currents after passage through a superconducting magnetometer. Magnetic charges equal to or above the Dirac charge are excluded in all samples. Monopole spins 0, ½, and 1 are considered and both velocity-independent and-dependent couplings are assumed. This search provides the best current laboratory constraints for monopoles with magnetic charges ranging from two to five times the Dirac charge.

Published
2019
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12. The cosmic ray shadow of the Moon observed with the ANTARES neutrino telescope.

Author

Albert A, André M, Anghinolfi M, Anton G, Ardid M, Aubert JJ, Aublin J, Avgitas T, Baret B, Barrios-Martít J, Basa S, Belhorma B, Bertin V, Biagi S, Bormuth R, Boumaaza J, Bourret S, Bouwhuis MC, Brânzaş H, Bruijn R, Brunner J, Busto J, Capone A, Caramete L, Carr J, Celli S, Chabab M, Moursli RCE, Chiarusi T, Circella M, Coelho JAB, Coleiro A, Colomer M, Coniglione R, Costantini H, Coyle P, Creusot A, Díaz AF, Deschamps A, Distefano C, Palma ID, Domi A, Donzaud C, Dornic D, Drouhin D, Eberl T, Bojaddaini IE, Khayati NE, Elsässer D, Enzenhöfer A, Ettahiri A, Fassi F, Felis I, Fermani P, Ferrara G, Fusco LA, Gay P, Glotin H, Grégoire T, Ruiz RG, Graf K, Hallmann S, van Haren H, Heijboer AJ, Hello Y, Hernández-Rey JJ, Hößl J, Hofestädt J, Illuminati G, de Jong M, Jongen M, Kadler M, Kalekin O, Katz U, Khan-Chowdhury NR, Kouchner A, Kreter M, Kreykenbohm I, Kulikovskiy V, Lachaud C, Lahmann R, Lefèvre D, Leonora E, Levi G, Lotze M, Loucatos S, Marcelin M, Margiotta A, Marinelli A, Martínez-Mora JA, Mele R, Melis K, Migliozzi P, Moussa A, Navas S, Nezri E, Nuñez A, Organokov M, Păvălaş GE, Pellegrino C, Piattelli P, Popa V, Pradier T, Quinn L, Racca C, Randazzo N, Riccobene G, Sánchez-Losa A, Saldaña M, Salvadori I, Samtleben DFE, Sanguineti M, Sapienza P, Schüssler F, Spurio M, Stolarczyk T, Taiuti M, Tayalati Y, Trovato A, Vallage B, Van Elewyck V, Versari F, Vivolo D, Wilms J, Zaborov D, Zornoza JD, and Zúñiga J

Abstract

One of the main objectives of the ANTARES telescope is the search for point-like neutrino sources. Both the pointing accuracy and the angular resolution of the detector are important in this context and a reliable way to evaluate this performance is needed. In order to measure the pointing accuracy of the detector, one possibility is to study the shadow of the Moon, i.e. the deficit of the atmospheric muon flux from the direction of the Moon induced by the absorption of cosmic rays. Analysing the data taken between 2007 and 2016, the Moon shadow is observed with 3.5 σ statistical significance. The detector angular resolution for downward-going muons is 0 . 73 ∘ ± 0 . 14 ∘ . The resulting pointing performance is consistent with the expectations. An independent check of the telescope pointing accuracy is realised with the data collected by a shower array detector onboard of a ship temporarily moving around the ANTARES location.

Published
2018
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13. Sperm whale long-range echolocation sounds revealed by ANTARES, a deep-sea neutrino telescope.

Author

André M, Caballé A, van der Schaar M, Solsona A, Houégnigan L, Zaugg S, Sánchez AM, Castell JV, Solé M, Vila F, Djokic D, Adrián-Martínez S, Albert A, Anghinolfi M, Anton G, Ardid M, Aubert JJ, Avgitas T, Baret B, Barrios-Martí J, Basa S, Bertin V, Biagi S, Bormuth R, Bouwhuis MC, Bruijn R, Brunner J, Busto J, Capone A, Caramete L, Carr J, Celli S, Chiarusi T, Circella M, Coleiro A, Coniglione R, Costantini H, Coyle P, Creusot A, Deschamps A, De Bonis G, Distefano C, Di Palma I, Donzaud C, Dornic D, Drouhin D, Eberl T, El Bojaddaini I, Elsässer D, Enzenhöfer A, Fehn K, Felis I, Fusco LA, Galatà S, Gay P, Geißelsöder S, Geyer K, Giordano V, Gleixner A, Glotin H, Gracia-Ruiz R, Graf K, Hallmann S, van Haren H, Heijboer AJ, Hello Y, Hernandez-Rey JJ, Hößl J, Hofestädt J, Hugon C, Illuminati G, James CW, de Jong M, Jongen M, Kadler M, Kalekin O, Katz U, Kießling D, Kouchner A, Kreter M, Kreykenbohm I, Kulikovskiy V, Lachaud C, Lahmann R, Lefèvre D, Leonora E, Loucatos S, Marcelin M, Margiotta A, Marinelli A, Martínez-Mora JA, Mathieu A, Melis K, Michael T, Migliozzi P, Moussa A, Mueller C, Nezri E, Păvălaş GE, Pellegrino C, Perrina C, Piattelli P, Popa V, Pradier T, Racca C, Riccobene G, Roensch K, Saldaña M, Samtleben DF, Sanguineti M, Sapienza P, Schnabel J, Schüssler F, Seitz T, Sieger C, Spurio M, Stolarczyk T, Sánchez-Losa A, Taiuti M, Trovato A, Tselengidou M, Turpin D, Tönnis C, Vallage B, Vallée C, Van Elewyck V, Vivolo D, Wagner S, Wilms J, Zornoza JD, and Zuñiga J

Abstract

Despite dedicated research has been carried out to adequately map the distribution of the sperm whale in the Mediterranean Sea, unlike other regions of the world, the species population status is still presently uncertain. The analysis of two years of continuous acoustic data provided by the ANTARES neutrino telescope revealed the year-round presence of sperm whales in the Ligurian Sea, probably associated with the availability of cephalopods in the region. The presence of the Ligurian Sea sperm whales was demonstrated through the real-time analysis of audio data streamed from a cabled-to-shore deep-sea observatory that allowed the hourly tracking of their long-range echolocation behaviour on the Internet. Interestingly, the same acoustic analysis indicated that the occurrence of surface shipping noise would apparently not condition the foraging behaviour of the sperm whale in the area, since shipping noise was almost always present when sperm whales were acoustically detected. The continuous presence of the sperm whale in the region confirms the ecological value of the Ligurian sea and the importance of ANTARES to help monitoring its ecosystems.

Published
2017
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14. Search for Magnetic Monopoles with the MoEDAL Forward Trapping Detector in 13 TeV Proton-Proton Collisions at the LHC.

Author

Acharya B, Alexandre J, Baines S, Benes P, Bergmann B, Bernabéu J, Branzas H, Campbell M, Caramete L, Cecchini S, de Montigny M, De Roeck A, Ellis JR, Fairbairn M, Felea D, Flores J, Frank M, Frekers D, Garcia C, Hirt AM, Janecek J, Kalliokoski M, Katre A, Kim DW, Kinoshita K, Korzenev A, Lacarrère DH, Lee SC, Leroy C, Lionti A, Mamuzic J, Margiotta A, Mauri N, Mavromatos NE, Mermod P, Mitsou VA, Orava R, Parker B, Pasqualini L, Patrizii L, Păvălaş GE, Pinfold JL, Popa V, Pozzato M, Pospisil S, Rajantie A, Ruiz de Austri R, Sahnoun Z, Sakellariadou M, Sarkar S, Semenoff G, Shaa A, Sirri G, Sliwa K, Soluk R, Spurio M, Srivastava YN, Suk M, Swain J, Tenti M, Togo V, Tuszyński JA, Vento V, Vives O, Vykydal Z, Whyntie T, Widom A, Willems G, Yoon JH, and Zgura IS

Abstract

MoEDAL is designed to identify new physics in the form of long-lived highly ionizing particles produced in high-energy LHC collisions. Its arrays of plastic nuclear-track detectors and aluminium trapping volumes provide two independent passive detection techniques. We present here the results of a first search for magnetic monopole production in 13 TeV proton-proton collisions using the trapping technique, extending a previous publication with 8 TeV data during LHC Run 1. A total of 222 kg of MoEDAL trapping detector samples was exposed in the forward region and analyzed by searching for induced persistent currents after passage through a superconducting magnetometer. Magnetic charges exceeding half the Dirac charge are excluded in all samples and limits are placed for the first time on the production of magnetic monopoles in 13 TeV pp collisions. The search probes mass ranges previously inaccessible to collider experiments for up to five times the Dirac charge.

Published
2017
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15. An algorithm for the reconstruction of high-energy neutrino-induced particle showers and its application to the ANTARES neutrino telescope.

Author

Albert A, André M, Anghinolfi M, Anton G, Ardid M, Aubert JJ, Avgitas T, Baret B, Barrios-Martí J, Basa S, Bertin V, Biagi S, Bormuth R, Bourret S, Bouwhuis MC, Bruijn R, Brunner J, Busto J, Capone A, Caramete L, Carr J, Celli S, Chiarusi T, Circella M, Coelho JAB, Coleiro A, Coniglione R, Costantini H, Coyle P, Creusot A, Deschamps A, De Bonis G, Distefano C, Di Palma I, Domi A, Donzaud C, Dornic D, Drouhin D, Eberl T, El Bojaddaini I, Elsässer D, Enzenhöfer A, Felis I, Folger F, Fusco LA, Galatà S, Gay P, Giordano V, Glotin H, Grégoire T, Gracia Ruiz R, Graf K, Hallmann S, van Haren H, Heijboer AJ, Hello Y, Hernández-Rey JJ, Hößl J, Hofestädt J, Hugon C, Illuminati G, James CW, de Jong M, Jongen M, Kadler M, Kalekin O, Katz U, Kießling D, Kouchner A, Kreter M, Kreykenbohm I, Kulikovskiy V, Lachaud C, Lahmann R, Lefèvre D, Leonora E, Lotze M, Loucatos S, Marcelin M, Margiotta A, Marinelli A, Martínez-Mora JA, Mele R, Melis K, Michael T, Migliozzi P, Moussa A, Nezri E, Organokov M, Păvălaş GE, Pellegrino C, Perrina C, Piattelli P, Popa V, Pradier T, Quinn L, Racca C, Riccobene G, Sánchez-Losa A, Saldaña M, Salvadori I, Samtleben DFE, Sanguineti M, Sapienza P, Schüssler F, Sieger C, Spurio M, Stolarczyk T, Taiuti M, Tayalati Y, Trovato A, Turpin D, Tönnis C, Vallage B, Van Elewyck V, Versari F, Vivolo D, Vizzoca A, Wilms J, Zornoza JD, and Zúñiga J

Abstract

A novel algorithm to reconstruct neutrino-induced particle showers within the ANTARES neutrino telescope is presented. The method achieves a median angular resolution of [Formula: see text] for shower energies below 100 TeV. Applying this algorithm to 6 years of data taken with the ANTARES detector, 8 events with reconstructed shower energies above 10 TeV are observed. This is consistent with the expectation of about 5 events from atmospheric backgrounds, but also compatible with diffuse astrophysical flux measurements by the IceCube collaboration, from which 2-4 additional events are expected. A [Formula: see text] C.L. upper limit on the diffuse astrophysical neutrino flux with a value per neutrino flavour of [Formula: see text] is set, applicable to the energy range from 23 TeV to 7.8 PeV, assuming an unbroken [Formula: see text] spectrum and neutrino flavour equipartition at Earth.

Published
2017
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16. Deep-sea bioluminescence blooms after dense water formation at the ocean surface.

Author

Tamburini C, Canals M, Durrieu de Madron X, Houpert L, Lefèvre D, Martini S, D'Ortenzio F, Robert A, Testor P, Aguilar JA, Samarai IA, Albert A, André M, Anghinolfi M, Anton G, Anvar S, Ardid M, Jesus AC, Astraatmadja TL, Aubert JJ, Baret B, Basa S, Bertin V, Biagi S, Bigi A, Bigongiari C, Bogazzi C, Bou-Cabo M, Bouhou B, Bouwhuis MC, Brunner J, Busto J, Camarena F, Capone A, Cârloganu C, Carminati G, Carr J, Cecchini S, Charif Z, Charvis P, Chiarusi T, Circella M, Coniglione R, Costantini H, Coyle P, Curtil C, Decowski P, Dekeyser I, Deschamps A, Donzaud C, Dornic D, Dorosti HQ, Drouhin D, Eberl T, Emanuele U, Ernenwein JP, Escoffier S, Fermani P, Ferri M, Flaminio V, Folger F, Fritsch U, Fuda JL, Galatà S, Gay P, Giacomelli G, Giordano V, Gómez-González JP, Graf K, Guillard G, Halladjian G, Hallewell G, van Haren H, Hartman J, Heijboer AJ, Hello Y, Hernández-Rey JJ, Herold B, Hößl J, Hsu CC, de Jong M, Kadler M, Kalekin O, Kappes A, Katz U, Kavatsyuk O, Kooijman P, Kopper C, Kouchner A, Kreykenbohm I, Kulikovskiy V, Lahmann R, Lamare P, Larosa G, Lattuada D, Lim G, Presti DL, Loehner H, Loucatos S, Mangano S, Marcelin M, Margiotta A, Martinez-Mora JA, Meli A, Montaruli T, Moscoso L, Motz H, Neff M, Nezri EN, Palioselitis D, Păvălaş GE, Payet K, Payre P, Petrovic J, Piattelli P, Picot-Clemente N, Popa V, Pradier T, Presani E, Racca C, Reed C, Riccobene G, Richardt C, Richter R, Rivière C, Roensch K, Rostovtsev A, Ruiz-Rivas J, Rujoiu M, Russo VG, Salesa F, Sánchez-Losa A, Sapienza P, Schöck F, Schuller JP, Schussler F, Shanidze R, Simeone F, Spies A, Spurio M, Steijger JJ, Stolarczyk T, Taiuti MG, Toscano S, Vallage B, Van Elewyck V, Vannoni G, Vecchi M, Vernin P, Wijnker G, Wilms J, de Wolf E, Yepes H, Zaborov D, De Dios Zornoza J, and Zúñiga J

Subjects
Animals, Cell Count, Luminescent Measurements methods, Mediterranean Region, Seasons, Eutrophication physiology, Fluorescence, Oceans and Seas
Abstract

The deep ocean is the largest and least known ecosystem on Earth. It hosts numerous pelagic organisms, most of which are able to emit light. Here we present a unique data set consisting of a 2.5-year long record of light emission by deep-sea pelagic organisms, measured from December 2007 to June 2010 at the ANTARES underwater neutrino telescope in the deep NW Mediterranean Sea, jointly with synchronous hydrological records. This is the longest continuous time-series of deep-sea bioluminescence ever recorded. Our record reveals several weeks long, seasonal bioluminescence blooms with light intensity up to two orders of magnitude higher than background values, which correlate to changes in the properties of deep waters. Such changes are triggered by the winter cooling and evaporation experienced by the upper ocean layer in the Gulf of Lion that leads to the formation and subsequent sinking of dense water through a process known as "open-sea convection". It episodically renews the deep water of the study area and conveys fresh organic matter that fuels the deep ecosystems. Luminous bacteria most likely are the main contributors to the observed deep-sea bioluminescence blooms. Our observations demonstrate a consistent and rapid connection between deep open-sea convection and bathypelagic biological activity, as expressed by bioluminescence. In a setting where dense water formation events are likely to decline under global warming scenarios enhancing ocean stratification, in situ observatories become essential as environmental sentinels for the monitoring and understanding of deep-sea ecosystem shifts.

Published
2013
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