4.7 Article

Radiative transmission of lepton flavor hierarchies

Journal

PHYSICS LETTERS B
Volume 680, Issue 5, Pages 476-479

Publisher

ELSEVIER
DOI: 10.1016/j.physletb.2009.09.042

Keywords

-

Funding

  1. US National Science Foundation [PHY-0652363]
  2. Alexander von Humboldt
  3. DFG-Sonderforschungsbereich Transregio 27 Neutrinos and beyond - Weakly interacting particles in Physics, Astrophysics and Cosmology

Ask authors/readers for more resources

We discuss a one loop model for neutrino masses which leads to a seesaw-like formula with the difference that the charged lepton masses replace the unknown Dirac mass matrix present in the usual seesaw case. This is a considerable reduction of parameters in the neutrino sector and predicts a strong hierarchical pattern in the right handed neutrino mass matrix that is easily derived from a U(1)(H) family symmetry. The model is based on the left-right gauge group with an additional Z(4) discrete symmetry which gives vanishing neutrino Dirac masses and finite Majorana masses arising at the one loop level. Furthermore. it is one of the few models that naturally allow for large (but not necessarily maximal) mixing angles in the lepton sector. A generalization of the model to the quark sector requires three iso-spin singlet vector-like down type quarks, as in E-6. The model predicts an inert doublet type scalar dark matter. (C) 2009 Elsevier B.V. All rights reserved.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.7
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

Article Physics, Multidisciplinary

Searching for Hidden Neutrons with a Reactor Neutrino Experiment: Constraints from the STEREO Experiment

H. Almazan, L. Bernard, A. Blanchet, A. Bonhomme, C. Buck, P. del Amo Sanchez, I. El Atmani, L. Labit, J. Lamblin, A. Letourneau, D. Lhuillier, M. Licciardi, M. Lindner, T. Materna, O. Meplan, H. Pessard, G. Pignol, J. -s. Real, J. -s. Ricol, C. Roca, R. Rogly, T. Salagnac, M. Sarrazin, V. Savu, S. Schoppmann, T. Soldner, A. Stutz, M. Vialat

Summary: This study reported a new experimental constraint on the probability of neutron conversion into a hidden neutron, setting a limit of p < 3.1 x 10-11 at a 95% confidence level. This highlights the potential of short-baseline neutrino experiments as competitive means to search for hidden neutrons.

PHYSICAL REVIEW LETTERS (2022)

Review Physics, Nuclear

Status and perspectives of neutrino physics

M. Sajjad Athar, Steven W. Barwick, Thomas Brunner, Jun Cao, Mikhail Danilov, Kunio Inoue, Takaaki Kajita, Marek Kowalski, Manfred Lindner, Kenneth R. Long, Nathalie Palanque-Delabrouille, Werner Rodejohann, Heidi Schellman, Kate Scholberg, Seon-Hee Seo, Nigel J. T. Smith, Walter Winter, Geralyn P. Zeller, Renata Zukanovich Funchal

Summary: This article provides a detailed discussion of the unique role of neutrinos in physics, including their sources, oscillations, masses, interactions, possible existence of sterile neutrinos, and theoretical implications. It also highlights the synergies between neutrino physics and other research fields, as well as the importance of technological developments and adequate infrastructures for the future of successful neutrino physics.

PROGRESS IN PARTICLE AND NUCLEAR PHYSICS (2022)

Article Astronomy & Astrophysics

Probing new physics at future tau neutrino telescopes

Guo-Yuan Huang, Sudip Jana, Manfred Lindner, Werner Rodejohann

Summary: This study systematically investigates new physics scenarios that can modify the interactions between neutrinos and matter, with a focus on the importance of tau neutrino telescopes in probing physics associated with the second and third generations. By analyzing experimental configurations and numerically solving propagation equations, the study obtains the sensitivities of upcoming tau neutrino telescopes to charged Higgs and leptoquark models. The combination of different telescopes is complementary in exploring new physics.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2022)

Article Physics, Multidisciplinary

Joint Measurement of the 235U Antineutrino Spectrum by PROSPECT and STEREO

H. Almazan, M. Andriamirado, A. B. Balantekin, H. R. Band, C. D. Bass, D. E. Bergeron, L. Bernard, A. Blanchet, A. Bonhomme, N. S. Bowden, C. D. Bryan, C. Buck, T. Classen, A. J. Conant, G. Deichert, P. del Amo Sanchez, A. Delgado, M. Diwan, M. J. Dolinski, I El Atmani, A. Erickson, B. T. Foust, J. K. Gaison, A. Galindo-Uribarri, C. E. Gilbert, S. Hans, A. B. Hansell, K. M. Heeger, B. Heffron, D. E. Jaffe, S. Jayakumar, X. Ji, D. C. Jones, J. Koblanski, O. Kyzylova, L. Labit, J. Lamblin, C. E. Lane, T. J. Langford, J. LaRosa, A. Letourneau, D. Lhuillier, M. Licciardi, M. Lindner, B. R. Littlejohn, X. Lu, J. Maricic, T. Materna, M. P. Mendenhall, A. M. Meyer, R. Milincic, P. E. Mueller, H. P. Mumm, J. Napolitano, R. Neilson, J. A. Nikkel, S. Nour, J. L. Palomino, H. Pessard, D. A. Pushin, X. Qian, J-S Real, J-S Ricol, C. Roca, R. Rogly, R. Rosero, T. Salagnac, V Savu, S. Schoppmann, M. Searles, V Sergeyeva, T. Soldner, A. Stutz, P. T. Surukuchi, M. A. Tyra, R. L. Varner, D. Venegas-Vargas, M. Vialat, P. B. Weatherly, C. White, J. Wilhelmi, A. Woolverton, M. Yeh, C. Zhang, X. Zhang

Summary: The PROSPECT and STEREO collaborations present a combined measurement of the pure U-235 antineutrino spectrum, finding an excess of events in the 5-6 MeV region which is fitted with a Gaussian bump.

PHYSICAL REVIEW LETTERS (2022)

Article Physics, Particles & Fields

Novel constraints on neutrino physics beyond the standard model from the CONUS experiment

H. Bonet, A. Bonhomme, C. Buck, K. Fuelber, J. Hakenmueller, G. Heusser, T. Hugle, M. Lindner, W. Maneschg, T. Rink, H. Strecker, R. Wink

Summary: The measurements from the coherent elastic neutrino-nucleus scattering (CE nu NS) experiments have opened up possibilities to study neutrino physics beyond the standard model. This paper presents constraints on non-standard interactions (NSIs) and mediators derived from CONUS germanium data. The study found that the CONUS experiment has set the world's best limits on tensor NSIs and has the potential to probe coupling constants for scalar and vector mediators.

JOURNAL OF HIGH ENERGY PHYSICS (2022)

Article Physics, Particles & Fields

Robustness of ARS leptogenesis in scalar extensions

Oliver Fischer, Manfred Lindner, Susan van der Woude

Summary: Extensions of the Standard Model with sterile neutrinos can explain the Baryon Asymmetry of the Universe and provide important information on the interactions between sterile neutrinos and scalar particles.

JOURNAL OF HIGH ENERGY PHYSICS (2022)

Article Physics, Multidisciplinary

Application and modeling of an online distillation method to reduce krypton and argon in XENON1T

E. Aprile, K. Abe, F. Agostini, S. Ahmed Maouloud, M. Alfonsi, L. Althueser, E. Angelino, J. R. Angevaare, V. C. Antochi, D. Anton Martin, F. Arneodo, L. Baudis, A. L. Baxter, L. Bellagamba, A. Bernard, R. Biondi, A. Bismark, A. Brown, S. Bruenner, G. Bruno, R. Budnik, C. Capelli, J. M. R. Cardoso, D. Cichon, B. Cimmino, M. Clark, A. P. Colijn, J. Conrad, J. J. Cuenca-Garcia, J. P. Cussonneau, V D'Andrea, M. P. Decowski, P. Di Gangi, S. Di Pede, A. Di Giovanni, R. Di Stefano, S. Diglio, A. Elykov, S. Farrell, A. D. Ferella, H. Fischer, S. Form, W. Fulgione, P. Gaemers, R. Gaior, M. Galloway, F. Gao, R. Glade-Beucke, L. Grandi, J. Grigat, A. Higuera, C. Hils, L. Hoetzsch, J. Howlett, C. Huhmann, M. Iacovacci, Y. Itow, J. Jakob, F. Joerg, A. Joy, N. Kato, P. Kavrigin, S. Kazama, M. Kobayashi, G. Koltman, A. Kopec, H. Landsman, R. F. Lang, L. Levinson, S. Li, I Li, S. Liang, S. Lindemann, M. Lindner, K. Liu, F. Lombardi, J. Long, J. A. M. Lopes, Y. Ma, C. Macolino, J. Mahlstedt, A. Mancuso, L. Manenti, A. Manfredini, F. Marignetti, T. Marrodan Undagoitia, K. Martens, J. Masbou, D. Masson, E. Masson, S. Mastroianni, M. Messina, K. Miuchi, K. Mizukoshi, A. Molinario, S. Moriyama, K. Mora, Y. Mosbacher, M. Murra, J. Mueller, K. Ni, U. Oberlack, B. Paetsch, J. Palacio, R. Peres, J. Pienaar, M. Pierre, V Pizzella, G. Plante, J. Qi, J. Qin, D. Ramirez Garcia, S. Reichard, A. Rocchetti, N. Rupp, L. Sanchez, J. M. F. dos Santos, G. Sartorelli, J. Schreiner, D. Schulte, H. Schulze Eissing, M. Schumann, L. Scotto Lavina, M. Selvi, F. Semeria, P. Shagin, E. Shockley, M. Silva, H. Simgen, A. Takeda, P-L Tan, A. Terliuk, D. Thers, F. Toschi, G. Trinchero, C. Tunnell, F. Tonnies, K. Valerius, G. Volta, Y. Wei, C. Weinheimer, M. Weiss, D. Wenz, C. Wittweg, T. Wolf, Z. Xu, M. Yamashita, L. Yang, J. Ye, L. Yuan, G. Zavattini, Y. Zhang, M. Zhong, T. Zhu

Summary: A novel online distillation technique was developed to reduce intrinsic background components, such as krypton, in the XENON1T dark matter experiment. The technique continuously purifies the gaseous volume of the detector system and achieved the lowest krypton concentration measured in an operating dark matter detector. A model was developed to describe the krypton evolution in the system over a span of 550 days.

PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS (2022)

Article Multidisciplinary Sciences

STEREO neutrino spectrum of 235U fission rejects sterile neutrino hypothesis

H. Almazan, L. Bernard, A. Bonhomme, C. Buck, A. Chalil, P. del Amo Sanchez, I El Atmani, L. Labit, A. Letourneau, D. Lhuillier, M. Licciardi, M. Lindner, T. Materna, H. Pessard, J-S Real, J-S Ricol, C. Roca, R. Rogly, T. Salagnac, V Savu, S. Schoppmann, T. Soldner, A. Stutz, M. Vialat

Summary: Anomalies in past neutrino measurements have led to the discovery of non-zero neutrino mass and oscillation between different flavors. The STEREO experiment aimed to investigate the existence of a supplementary, sterile neutrino state that does not interact via weak interaction. The analysis of data from the STEREO experiment confirms observed anomalies while rejecting the hypothesis of a light sterile neutrino.

NATURE (2023)

Article Physics, Nuclear

Improved FIFRELIN de-excitation model for neutrino applications

H. Almazan, L. Bernard, A. Blanchet, A. Bonhomme, C. Buck, A. Chalil, A. Chebboubi, P. del Amo Sanchez, I. El Atmani, L. Labit, J. Lamblin, A. Letourneau, D. Lhuillier, M. Licciardi, M. Lindner, O. Litaize, T. Materna, H. Pessard, J. -S Real, J. -S Ricol, C. Roca, R. Rogly, T. Salagnac, V. Savu, S. Schoppmann, T. Soldner, A. Stutz, L. Thulliez, M. Vialat

Summary: In order to improve the detection efficiency, researchers have made improvements to the FIFRELIN de-excitation model, including the inclusion of experimental transition intensities and the implementation of angular correlations. They simulated neutron captures in different positions and provided up-to-date FIFRELIN simulations of the Gd isotopes for the research community to use.

EUROPEAN PHYSICAL JOURNAL A (2023)

Article Physics, Nuclear

Double-weak decays of 124Xe and 136Xe in the XENON1T and XENONnT experiments

E. Aprile, K. Abe, F. Agostini, S. Ahmed Maouloud, M. Alfonsi, L. Althueser, B. Andrieu, E. Angelino, J. R. Angevaare, V. C. Antochi, D. Anton Martin, F. Arneodo, L. Baudis, A. L. Baxter, L. Bellagamba, R. Biondi, A. Bismark, A. Brown, S. Bruenner, G. Bruno, R. Budnik, C. Cai, C. Capelli, J. M. R. Cardoso, D. Cichon, M. Clark, A. P. Colijn, J. Conrad, J. J. Cuenca-Garcia, J. P. Cussonneau, M. P. Decowski, P. Di Gangi, S. Di Pede, A. Di Giovanni, R. Di Stefano, S. Diglio, K. Eitel, A. Elykov, S. Farrell, A. D. Ferella, H. Fischer, W. Fulgione, P. Gaemers, R. Gaior, A. Gallo Rosso, M. Galloway, F. Gao, R. Glade-Beucke, L. Grandi, J. Grigat, M. Guida, A. Higuera, C. Hils, L. Hoetzsch, J. Howlett, M. Iacovacci, Y. Itow, J. Jakob, F. Joerg, A. Joy, N. Kato, M. Kara, P. Kavrigin, S. Kazama, M. Kobayashi, G. Koltman, A. Kopec, H. Landsman, R. F. Lang, L. Levinson, I Li, S. Li, S. Liang, S. Lindemann, M. Lindner, K. Liu, J. Loizeau, F. Lombardi, J. Long, J. A. M. Lopes, Y. Ma, C. Macolino, J. Mahlstedt, A. Mancuso, L. Manenti, A. Manfredini, F. Marignetti, T. Marrodan Undagoitia, K. Martens, J. Masbou, D. Masson, E. Masson, S. Mastroianni, M. Messina, K. Miuchi, K. Mizukoshi, A. Molinario, S. Moriyama, K. Mora, Y. Mosbacher, M. Murra, J. Mueller, K. Ni, U. Oberlack, B. Paetsch, J. Palacio, R. Peres, J. Pienaar, M. Pierre, V Pizzella, G. Plante, J. Qi, J. Qin, D. Ramirez Garcia, S. Reichard, A. Rocchetti, N. Rupp, L. Sanchez, J. M. F. dos Santos, I Sarnoff, G. Sartorelli, J. Schreiner, D. Schulte, P. Schulte, H. Schulze Eissing, M. Schumann, L. Scotto Lavina, M. Selvi, F. Semeria, P. Shagin, S. Shi, E. Shockley, M. Silva, H. Simgen, A. Takeda, P-L Tan, A. Terliuk, D. Thers, F. Toschi, G. Trinchero, C. Tunnell, F. Tonnies, K. Valerius, G. Volta, Y. Wei, C. Weinheimer, M. Weiss, D. Wenz, C. Wittweg, T. Wolf, Z. Xu, M. Yamashita, L. Yang, J. Ye, L. Yuan, G. Zavattini, S. Zerbo, M. Zhong, T. Zhu

Summary: This study presents the results of the search for two-neutrino double-electron capture and neutrinoless double-beta decay in XENON1T. The measurement of the half-life for the 2 nu ECEC process and the lower limit of the half-life for OW are reported. The study also provides sensitivity projections for OW using XENONnT.

PHYSICAL REVIEW C (2022)

Article Physics, Particles & Fields

An approximate likelihood for nuclear recoil searches with XENON1T data

E. Aprile, K. Abe, F. Agostini, S. Ahmed Maouloud, M. Alfonsi, L. Althueser, B. Andrieu, E. Angelino, J. R. Angevaare, V. C. Antochi, D. Anton Martin, F. Arneodo, L. Baudis, A. L. Baxter, L. Bellagamba, R. Biondi, A. Bismark, A. Brown, S. Bruenner, G. Bruno, R. Budnik, C. Capelli, J. M. R. Cardoso, D. Cichon, B. Cimmino, M. Clark, A. P. Colijn, J. Conrad, J. J. Cuenca-Garcia, J. P. Cussonneau, V D'Andrea, M. P. Decowski, P. Di Gangi, S. Di Pede, A. Di Giovanni, R. Di Stefano, S. Diglio, A. Elykov, S. Farrell, A. D. Ferella, H. Fischer, W. Fulgione, P. Gaemers, R. Gaior, M. Galloway, F. Gao, R. Glade-Beucke, L. Grandi, J. Grigat, A. Higuera, C. Hils, L. Hoetzsch, J. Howlett, M. Iacovacci, Y. Itow, J. Jakob, F. Joerg, A. Joy, N. Kato, P. Kavrigin, S. Kazama, M. Kobayashi, G. Koltman, A. Kopec, H. Landsman, R. F. Lang, L. Levinson, I Li, S. Li, S. Liang, S. Lindemann, M. Lindner, K. Liu, F. Lombardi, J. Long, J. A. M. Lopes, Y. Ma, C. Macolino, J. Mahlstedt, A. Mancuso, L. Manenti, A. Manfredini, F. Marignetti, T. Marrodan Undagoitia, K. Martens, J. Masbou, D. Masson, E. Masson, S. Mastroianni, M. Messina, K. Miuchi, K. Mizukoshi, A. Molinario, S. Moriyama, K. Mora, Y. Mosbacher, M. Murra, J. Mueller, K. Ni, U. Oberlack, B. Paetsch, J. Palacio, R. Peres, J. Pienaar, M. Pierre, V Pizzella, G. Plante, J. Qi, J. Qin, D. Ramirez Garcia, S. Reichard, A. Rocchetti, N. Rupp, L. Sanchez, J. M. F. dos Santos, G. Sartorelli, J. Schreiner, D. Schulte, P. Schulte, H. Schulze Eissing, M. Schumann, L. Scotto Lavina, M. Selvi, F. Semeria, P. Shagin, S. Shi, E. Shockley, M. Silva, H. Simgen, A. Takeda, P. L. Tan, A. Terliuk, D. Thers, F. Toschi, G. Trinchero, C. Tunnell, F. Toennies, K. Valerius, G. Volta, Y. Wei, C. Weinheimer, M. Weiss, D. Wenz, C. Wittweg, T. Wolf, Z. Xu, M. Yamashita, L. Yang, J. Ye, L. Yuan, G. Zavattini, Y. Zhang, M. Zhong, T. Zhu

Summary: The paper presents an approximate likelihood function for nuclear recoil spectra and provides data and code for computing upper limits. The method is approximately three orders of magnitude faster than traditional methods and can assess the sensitivity to arbitrary nuclear recoil signatures.

EUROPEAN PHYSICAL JOURNAL C (2022)

Meeting Abstract Radiology, Nuclear Medicine & Medical Imaging

Neuroplasticity and brain connectivity in a rat model of bilateral labyrinthectomy - a longitudinal [18]UCB-H/[18F] FDG study

M. Antons, H. McGregor, M. Lindner, M. Grosch, R. Oos, G. Palumbo, M. Brendel, S. Ziegler, P. Bartenstein, M. Dieterich, A. Zwergal

EUROPEAN JOURNAL OF NUCLEAR MEDICINE AND MOLECULAR IMAGING (2022)

Article Physics, Particles & Fields

Material radiopurity control in the XENONnT experiment

E. Aprile, K. Abe, F. Agostini, S. Ahmed Maouloud, M. Alfonsi, L. Althueser, E. Angelino, J. R. Angevaare, V. C. Antochi, D. Anton Martin, F. Arneodo, L. Baudis, A. L. Baxter, L. Bellagamba, R. Biondi, A. Bismark, A. Brown, S. Bruenner, G. Bruno, R. Budnik, C. Capelli, J. M. R. Cardoso, D. Cichon, B. Cimmino, M. Clark, A. P. Colijn, J. Conrad, J. J. Cuenca-Garcia, J. P. Cussonneau, V. D'Andrea, M. P. Decowski, P. Di Gangi, S. Di Pede, A. Di Giovanni, R. Di Stefano, S. Diglio, A. Elykov, S. Farrell, A. D. Ferella, H. Fischer, W. Fulgione, P. Gaemers, R. Gaior, M. Galloway, F. Gao, R. Glade-Beucke, L. Grandi, J. Grigat, A. Higuera, C. Hils, K. Hiraide, L. Hoetzsch, J. Howlett, M. Iacovacci, Y. Itow, J. Jakob, F. Joerg, N. Kato, P. Kavrigin, S. Kazama, M. Kobayashi, G. Koltman, A. Kopec, H. Landsman, R. F. Lang, L. Levinson, I. Li, S. Liang, S. Lindemann, M. Lindner, K. Liu, F. Lombardi, J. Long, J. A. M. Lopes, Y. Ma, C. Macolino, J. Mahlstedt, A. Mancuso, L. Manenti, A. Manfredini, F. Marignetti, T. Marrodan Undagoitia, K. Martens, J. Masbou, D. Masson, E. Masson, S. Mastroianni, M. Messina, K. Miuchi, K. Mizukoshi, A. Molinario, S. Moriyama, K. Mora, Y. Mosbacher, M. Murra, K. Ni, U. Oberlack, J. Palacio, R. Peres, J. Pienaar, M. Pierre, V. Pizzella, G. Plante, J. Qi, J. Qin, D. Ramirez Garcia, S. Reichard, A. Rocchetti, N. Rupp, L. Sanchez, J. M. F. dos Santos, G. Sartorelli, J. Schreiner, D. Schulte, H. Schulze Eissing, M. Schumann, L. Scotto Lavina, M. Selvi, F. Semeria, P. Shagin, E. Shockley, M. Silva, H. Simgen, A. Takeda, P. L. Tan, A. Terliuk, C. Therreau, D. Thers, F. Toschi, G. Trinchero, C. Tunnell, F. Toennies, K. Valerius, G. Volta, Y. Wei, C. Weinheimer, M. Weiss, D. Wenz, J. Westermann, C. Wittweg, T. Wolf, Z. Xu, M. Yamashita, L. Yang, J. Ye, L. Yuan, G. Zavattini, Y. Zhang, M. Zhong, T. Zhu, J. P. Zopounidis, M. Laubenstein, S. Nisi

Summary: The selection of low-radioactive construction materials is crucial for the XENONnT experiment. Extensive radioassay program results show a reduction in materials background by about 17% compared to the predecessor, XENON1T. The expected Rn-222 activity concentration in XENONnT is determined to be three times lower than XENON1T, and it will be further reduced by a novel radon distillation system.

EUROPEAN PHYSICAL JOURNAL C (2022)

Article Astronomy & Astrophysics

Flavor seesaw mechanism

Sudip Jana, Sophie Klett, Manfred Lindner

Summary: In the Standard Model, the masses and mixing angles of fermions, except for neutrinos, can be described by Yukawa couplings. However, the hierarchies and regularities in quark and lepton masses remain a mystery. This article proposes a new class of models with vectorlike fermions that may address this problem and provide a new mechanism for fermion mass generation.

PHYSICAL REVIEW D (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)