Indirect dark matter search with AMS-02 data

• Grant number: 14/50747-8
• Support Opportunities: Regular Research Grants
• Start date: September 01, 2015
• End date: August 31, 2017
• Field of knowledge: Physical Sciences and Mathematics - Physics
• Agreement: CNRS
• Mobility Program: SPRINT - Projetos de pesquisa - Mobilidade
• Principal Investigator: Manuela Vecchi
• Grantee: Manuela Vecchi
• Principal researcher abroad: Vincent Poireau
• Institution abroad: Université Savoie Mont Blanc, France
• Host Institution: Instituto de Física de São Carlos (IFSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
• Associated research grant: 14/19149-7 - Indirect dark matter search with the AMS-02 detector, AP.JP

Abstract

Cosmology and astrophysics provide several convincing evidences of the existence of dark matter (DM). However, we have very little knowledge about what DM is made of and how it interacts with particles in the Standard Model. The AMS-02 experiment will help to improve our current understanding in the field. The AMS-02 Collaboration, lead by Nobel laureate Prof. S. C. Ting, has build a magnetic spectrometer that is installed aboard the International Space Station since 2011. Given its large acceptance, together with excellent background rejection and energy resolution, precision measurements of positrons and electrons have been achieved, and precise measurements of other particles, such as antiprotons, are in progress. The main goal of the present project is to strengthen the synergy between CNRS scientist working in Annecy (at LAPP and LAPTh), and the members of the AMS group of IFSC, by means of regular exchanges. The goal of the exchange is to prepare one paper about the antiproton-to-proton flux ratio, in the frame of the AMS-02 Collaboration, and two papers on the interpretation of positrons and antiprotons results in terms of dark matter annihilation. (AU)

Scientific publications

(6)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

BOUDAUD, M.; BUENO, E. F.; CAROFF, S.; GENOLINI, Y.; POULIN, V.; POIREAU, V.; PUTZE, A.; ROSIER, S.; SALATI, P.; VECCHI, M.. The pinching method for Galactic cosmic ray positrons: Implications in the light of precision measurements. Astronomy & Astrophysics, v. 605, SEP 2017. (15/13533-2, 14/50747-8, 14/19149-7)

BATTARBEE, M.; BECKER, U.; GUERRI, I.; LEBEDEV, A.; LI, T. X.; LU, Y. S.; MARIN, J.; MARTIN, T.; NOZZOLI, F.; PICOT-CLEMENTE, N.; et al. . Physical Review Letters, v. 117, n. 9, AUG 26 2016. (14/19149-7, 14/50747-8)

AGUILAR, M.; AISA, D.; ALPAT, B.; ALVINO, A.; AMBROSI, G.; ANDEEN, K.; ARRUDA, L.; ATTIG, N.; AZZARELLO, P.; BACHLECHNER, A.; et al. Precision Measurement of the Helium Flux in Primary Cosmic Rays of Rigidities 1.9 GV to 3 TV with the Alpha Magnetic Spectrometer on the International Space Station. Physical Review Letters, v. 115, n. 21, NOV 17 2015. (14/19149-7, 14/50747-8)

AGUILAR, M.; AISA, D.; ALPAT, B.; ALVINO, A.; AMBROSI, G.; ANDEEN, K.; ARRUDA, L.; ATTIG, N.; AZZARELLO, P.; BACHLECHNER, A.; et al. Precision Measurement of the Proton Flux in Primary Cosmic Rays from Rigidity 1 GV to 1.8 TV with the Alpha Magnetic Spectrometer on the International Space Station. Physical Review Letters, v. 114, n. 17, APR 30 2015. (14/19149-7, 14/50747-8)

GENOLINI, YOANN; SERPICO, PASQUALE D.; BOUDAUD, MATHIEU; CAROFF, SAMI; POULIN, VIVIAN; DEROME, LAURENT; LAVALLE, JULIEN; MAURIN, DAVID; POIREAU, VINCENT; ROSIER, SYLVIE; et al. Indications for a High-Rigidity Break in the Cosmic-Ray Diffusion Coefficient. Physical Review Letters, v. 119, n. 24, DEC 15 2017. (14/19149-7, 14/50747-8)

AGUILAR, M.; ALPAT, B.; AMBROSI, G.; ARRUDA, L.; ATTIG, N.; AUPETIT, S.; AZZARELLO, P.; BACHLECHNER, A.; BARAO, F.; BARRAU, A.; et al. Antiproton Flux, Antiproton-to-Proton Flux Ratio, and Properties of Elementary Particle Fluxes in Primary Cosmic Rays Measured with the Alpha Magnetic Spectrometer on the International Space Station. Physical Review Letters, v. 117, n. 9, p. 10-pg., 2016-08-26. (14/50747-8, 14/19149-7)