4.7 Article

First results of the EDELWEISS-II WIMP search using Ge cryogenic detectors with interleaved electrodes

期刊

PHYSICS LETTERS B
卷 687, 期 4-5, 页码 294-298

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ELSEVIER
DOI: 10.1016/j.physletb.2010.03.057

关键词

Dark matter; Cryogenic Ge detectors; WIMP searches

资金

  1. Agence Nationale pour la Recherche [ANR-06-BLAN-0376-01]
  2. Russian Foundation for Basic Research [07-02-00355-a]
  3. Agence Nationale de la Recherche (ANR) [ANR-06-BLAN-0376] Funding Source: Agence Nationale de la Recherche (ANR)

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The EDELWEISS-II Collaboration has performed a direct search for WIMP dark matter with an array of ten 400 g heat-and-ionization cryogenic detectors equipped with interleaved electrodes for the rejection of near-surface events. Six months of continuous operation at the Laboratoire Souterrain de Modane have been achieved. The observation of one nuclear recoil candidate above 20 keV in an effective exposure of 144 kg cl is interpreted in terms of limits on the cross-section of spin-independent interactions of WIMPs and nucleons. A cross-section of 1.0 x 10(-7) pb is excluded at 90% CL for a WIMP mass of 80 GeV/c(2). This result demonstrates for the first time the very high background rejection capabilities of these simple and robust detectors in an actual WIMP search experiment. (C) 2010 Elsevier B.V. All rights reserved.

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Article Physics, Particles & Fields

Optimization of the first CUPID detector module

K. Alfonso, A. Armatol, C. Augier, F. T. Avignone, O. Azzolini, M. Balata, A. S. Barabash, G. Bari, A. Barresi, D. Baudin, F. Bellini, G. Benato, M. Beretta, M. Bettelli, M. Biassoni, J. Billard, V Boldrini, A. Branca, C. Brofferio, C. Bucci, J. Camilleri, A. Campani, C. Capelli, S. Capelli, L. Cappelli, L. Cardani, P. Carniti, N. Casali, E. Celi, C. Chang, D. Chiesa, M. Clemenza, I Colantoni, S. Copello, E. Craft, O. Cremonesi, R. J. Creswick, A. Cruciani, A. D'Addabbo, G. D'Imperio, S. Dabagov, I Dafinei, F. A. Danevich, M. De Jesus, P. de Marcillac, S. Dell'Oro, S. Di Domizio, S. Di Lorenzo, T. Dixon, V Dompe, A. Drobizhev, L. Dumoulin, G. Fantini, M. Faverzani, E. Ferri, F. Ferri, F. Ferroni, E. Figueroa-Feliciano, L. Foggetta, J. Formaggio, A. Franceschi, C. Fu, S. Fu, B. K. Fujikawa, A. Gallas, J. Gascon, S. Ghislandi, A. Giachero, A. Gianvecchio, L. Gironi, A. Giuliani, P. Gorla, C. Gotti, C. Grant, P. Gras, P. Guillaumon, T. D. Gutierrez, K. Han, E. Hansen, K. M. Heeger, D. L. Helis, H. Z. Huang, L. Imbert, J. Johnston, A. Juillard, G. Karapetrov, G. Keppel, H. Khalife, V. V. Kobychev, Yu G. Kolomensky, S. Konovalov, R. Kowalski, T. Langford, M. Lefevre, R. Liu, Y. Liu, P. Loaiza, L. Ma, M. Madhukuttan, F. Mancarella, L. Marini, S. Marnieros, M. Martinez, R. H. Maruyama, Ph Mas, B. Mauri, D. Mayer, G. Mazzitelli, Y. Mei, S. Milana, S. Morganti, T. Napolitano, M. Nastasi, J. Nikkel, S. Nisi, C. Nones, E. B. Norman, V Novosad, I Nutini, T. O'Donnell, E. Olivieri, M. Olmi, J. L. Ouellet, S. Pagan, C. Pagliarone, L. Pagnanini, L. Pattavina, M. Pavan, H. Peng, G. Pessina, V Pettinacci, C. Pira, S. Pirro, D. Poda, O. G. Polischuk, I Ponce, S. Pozzi, E. Previtali, A. Puiu, S. Quitadamo, A. Ressa, R. Rizzoli, C. Rosenfeld, P. Rosier, J. Scarpaci, B. Schmidt, V Sharma, V. N. Shlegel, V Singh, M. Sisti, P. Slocum, D. Speller, P. T. Surukuchi, L. Taffarello, C. Tomei, J. A. Torres, V. Tretyak, A. Tsymbaliuk, M. Velazquez, K. J. Vetter, S. L. Wagaarachchi, G. Wang, L. Wang, R. Wang, B. Welliver, J. Wilson, K. Wilson, L. A. Winslow, M. Xue, L. Yan, J. Yang, V Yefremenko, V. Umatov, M. M. Zarytskyy, J. Zhang, A. Zolotarova, S. Zucchelli

Summary: CUPID is a next generation experiment aiming to search for neutrinoless double beta decay. Through the use of scintillating crystals coupled to light detectors, CUPID aims to achieve a background free environment. The experiment has demonstrated high particle identification capability and improved light collection efficiency.

EUROPEAN PHYSICAL JOURNAL C (2022)

Article Physics, Particles & Fields

Pulse shape analysis in GERDA Phase II

M. Agostini, G. Araujo, A. M. Bakalyarov, M. Balata, I Barabanov, L. Baudis, C. Bauer, E. Bellotti, S. Belogurov, A. Bettini, L. Bezrukov, V Biancacci, E. Bossio, V Bothe, V Brudanin, R. Brugnera, A. Caldwell, C. Cattadori, A. Chernogorov, T. Comellato, V D'Andrea, E. Demidova, N. Di Marco, E. Doroshkevich, F. Fischer, M. Fomina, A. Gangapshev, A. Garfagnini, C. Gooch, P. Grabmayr, V Gurentsov, K. Gusev, J. Hakenmueller, S. Hemmer, R. Hiller, W. Hofmann, J. Huang, M. Hult, L. Inzhechik, J. Janicsko Csathy, J. Jochum, M. Junker, V Kazalov, Y. Kermaidic, H. Khushbakht, T. Kihm, K. Kilgus, A. Kirsch, I. Kirpichnikov, A. Klimenko, K. T. Knoepfle, O. Kochetov, V. N. Kornoukhov, P. Krause, V. V. Kuzminov, M. Laubenstein, A. Lazzaro, M. Lindner, I Lippi, A. Lubashevskiy, B. Lubsandorzhiev, G. Lutter, C. Macolino, B. Majorovits, W. Maneschg, L. Manzanillas, M. Miloradovic, R. Mingazheva, M. Misiaszek, Y. Mueller, I Nemchenok, K. Panas, L. Pandola, K. Pelczar, L. Pertoldi, P. Piseri, A. Pullia, C. Ransom, L. Rauscher, M. Redchuk, S. Riboldi, N. Rumyantseva, C. Sada, F. Salamida, S. Schoenert, J. Schreiner, M. Schuett, A-K Schuetz, O. Schulz, M. Schwarz, B. Schwingenheuer, O. Selivanenko, E. Shevchik, M. Shirchenko, L. Shtembari, H. Simgen, A. Smolnikov, D. Stukov, A. A. Vasenko, A. Veresnikova, C. Vignoli, K. von Sturm, V Wagner, T. Wester, C. Wiesinger, M. Wojcik, E. Yanovich, B. Zatschler, I Zhitnikov, S. Zhukov, D. Zinatulina, A. Zschocke, A. J. Zsigmond, K. Zuber, G. Zuzel

Summary: The GERDA collaboration conducted a search for neutrinoless double-beta decay using high purity germanium detectors. Through upgrades and analysis of pulse time profiles, they were able to significantly reduce background and improve the sensitivity of the experiment. This work presents the methods used for data analysis and provides a list of parameters.

EUROPEAN PHYSICAL JOURNAL C (2022)

Article Astronomy & Astrophysics

Inhomogeneity of a rotating quark-gluon plasma from holography

Nelson R. F. Braga, Octavio C. Junqueira

Summary: This study investigates the influence of rotation on the transition temperature of strongly interacting matter produced in non-central heavy ion collisions. By using a holographic description of an AdS black hole, the authors extend the analysis to the more realistic case where the matter spreads over a region around the rotational axis. The results show the coexistence of confined and deconfined phases and are consistent with the concept of local temperature in rotating frames developed by Tolman and Ehrenfest.

PHYSICS LETTERS B (2024)

Article Astronomy & Astrophysics

Constrain the time variation of the gravitational constant via the propagation of gravitational waves

Bing Sun, Jiachen An, Zhoujian Cao

Summary: This paper investigates the effect of gravitational constant variation on the propagation of gravitational waves. By employing two analytical methods, the study finds that variations in the gravitational constant result in amplitude and phase corrections for gravitational waves, and the time variation of the gravitational constant can be constrained through the propagation of gravitational waves.

PHYSICS LETTERS B (2024)

Article Astronomy & Astrophysics

Quantum tunneling from Schwarzschild black hole in non-commutative gauge theory of gravity

Abdellah Touati, Zaim Slimane

Summary: This letter presents the first study of Hawking radiation as a tunneling process within the framework of non-commutative gauge theory of gravity. The non-commutative Schwarzschild black hole is reconstructed using the Seiberg-Witten map and the star product. The emission spectrum of outgoing massless particles is computed using the quantum tunneling mechanism. The results reveal pure thermal radiation in the low-frequency scenario, but a deviation from pure thermal radiation in the high-frequency scenario due to energy conservation. It is also found that noncommutativity enhances the correlations between successively emitted particles.

PHYSICS LETTERS B (2024)

Article Astronomy & Astrophysics

Compact stars: To cross or go around? That is the question

Shahar Hod

Summary: The travel times of light signals between two antipodal points on a compact star's surface are calculated for two different trajectories. It is shown that, for highly dense stars, the longer trajectory along the surface may have a shorter travel time as measured by asymptotic observers. A critical value of the dimensionless density-area parameter is determined for constant density stars to distinguish cases where crossing through the star's center or following a semi-circular trajectory on the surface has a shorter travel time as measured by asymptotic observers.

PHYSICS LETTERS B (2024)