no code implementations • 24 Feb 2021 • Prateek Agrawal, Martin Bauer, James Beacham, Asher Berlin, Alexey Boyarsky, Susana Cebrian, Xabier Cid-Vidal, David d'Enterria, Albert De Roeck, Marco Drewes, Bertrand Echenard, Maurizio Giannotti, Gian Francesco Giudice, Sergei Gninenko, Stefania Gori, Evgueni Goudzovski, Julian Heeck, Pilar Hernandez, Matheus Hostert, Igor Irastorza, Alexander Izmaylov, Joerg Jaeckel, Felix Kahlhoefer, Simon Knapen, Gordan Krnjaic, Gaia Lanfranchi, Jocelyn Monroe, Verena Martinez-Outschoorn, Jacobo Lopez-Pavon, Silvia Pascoli, Maxim Pospelov, Diego Redigolo, Andreas Ringwald, Oleg Ruchayskiy, Joshua Ruderman, Haether Russell, Jakob Salfeld-Nebgen, Philip Schuster, Mikhail Shaposhnikov, Lesya Shchutska, Jessie Shelton, Yotam Soreq, Yevgeny Stadnik, Joel Swallow, Kohsaku Tobioka, Yu-Dai Tsai
With the establishment and maturation of the experimental programs searching for new physics with sizeable couplings at the LHC, there is an increasing interest in the broader particle and astrophysics community for exploring the physics of light and feebly-interacting particles as a paradigm complementary to a New Physics sector at the TeV scale and beyond.
High Energy Physics - Phenomenology
no code implementations • 18 Sep 2020 • Mengjiao Xiao, Kerstin M. Perez, Maurizio Giannotti, Oscar Straniero, Alessandro Mirizzi, Brian W. Grefenstette, Brandon M. Roach, Melania Nynka
We use the first observation of Betelgeuse in hard $X$-rays to perform a novel search for axion-like particles (ALPs).
High Energy Astrophysical Phenomena High Energy Physics - Phenomenology
no code implementations • 26 Aug 2020 • Francesca Calore, Pierluca Carenza, Maurizio Giannotti, Joerg Jaeckel, Alessandro Mirizzi
ALPs coupled only to photons are produced in the SN core via the Primakoff process, and then converted into gamma rays in the Galactic magnetic field.
High Energy Physics - Phenomenology High Energy Astrophysical Phenomena
no code implementations • 27 Jun 2019 • Pierluca Carenza, Tobias Fischer, Maurizio Giannotti, Gang Guo, Gabriel Martinez-Pinedo, Alessandro Mirizzi
We find that the axion emissivity is reduced by over an order of magnitude with respect to the basic OPE calculation, after all these effects are accounted for.
High Energy Physics - Phenomenology Solar and Stellar Astrophysics
no code implementations • 7 Aug 2017 • Maurizio Giannotti, Igor G. Irastorza, Javier Redondo, Andreas Ringwald, Ken'ichi Saikawa
These excessive energy losses may be explained by the existence of a new sub-keV mass pseudoscalar Nambu--Goldstone boson with tiny couplings to photons, electrons, and nucleons.
High Energy Physics - Phenomenology High Energy Astrophysical Phenomena Solar and Stellar Astrophysics
no code implementations • 8 Sep 2016 • Manuel Meyer, Maurizio Giannotti, Alessandro Mirizzi, Jan Conrad, Miguel Sanchez-Conde
In a Galactic core-collapse supernova (SN), axionlike particles (ALPs) could be emitted via the Primakoff process and eventually convert into $\gamma$ rays in the magnetic field of the Milky Way.
High Energy Astrophysical Phenomena High Energy Physics - Phenomenology
no code implementations • 14 Oct 2014 • Alexandre Payez, Carmelo Evoli, Tobias Fischer, Maurizio Giannotti, Alessandro Mirizzi, Andreas Ringwald
We revise the bound from the supernova SN1987A on the coupling of ultralight axion-like particles (ALPs) to photons.
High Energy Astrophysical Phenomena High Energy Physics - Phenomenology
no code implementations • 23 Jun 2014 • Adrian Ayala, Inma Dominguez, Maurizio Giannotti, Alessandro Mirizzi, Oscar Straniero
We derive a strong bound on the axion-photon coupling $g_{a\gamma}$ from the analysis of a sample of 39 Galactic Globular Clusters.
Solar and Stellar Astrophysics High Energy Physics - Phenomenology
