2561 DPyC SMF false [["minutes", "Minutes"], ["notes", "Notes"], ["paper", "Paper"], ["poster", "Poster"], ["slides", "Slides"], ["summary", "Summary"]] Cinvestav ea481e58ca9c64e14d7982cb66bcd604 3312 The Division of Particles and Fields of the Mexican Physical Society (DPyC-SMF) organizes every year the Annual Meeting (RADPyC). This space is dedicated mainly for the exposure of results of graduate students and young researchers working in high energy physics and includes some review talks on the hot topics of the field. This year the meeting will be held in Auditorio José Ádem, Cinvestav, Mexico City, México. The scientific programme will consist of invited and contributed talks, and a poster session. It will begin in the morning of Wednesday 17 June and end before lunch on Friday 19 June. We will have the following invited talks: - Ana Colmenero, HAWC (UMSNH) - Jens Erler, The EW SM and constraints on NP (Mainz, PRISMA) - Iván Martínez Soler, Neutrino physics (Durham Univ.) - Cristina Oropeza, CMS (Ibero) - Antonio Ortiz, ALICE (ICN-UNAM) - Gabriel Palacios, Accelerator physics (UNAM) - Antonio Pich, Flavor physics (IFIC) - Pedro Podesta, Belle-II (UAS) - Selomit Ramírez, QCD, Loop Tree Duality, Quantum Computing (UAS) - Saúl Ramos, Flavor physics from a top-down perspective (IF-UNAM) - Alfredo Raya, NICA (UMSNH) - Eric Vázquez, DM-neutrinos (exp.) (IF-UNAM) The whole event can be followed by Zoom: https://us02web.zoom.us/j/85815121456?pwd=t1JWdqhgarEQRyewmXIEzNlkIcqU8a.1 (858 1512 1456 & 044752). Due to recent internet security problems at Cinvestav it will NOT be broadcasted via the DPyC facebook account (facebook is currently blocked on our premises). False 2026-06-17T09:00:00 2026-06-19T14:30:00 2026-03-23T09:50:55 2026-06-19T17:51:55 Mexico/General cinvestav f09241183e84638d226a8885656239cd Cinvestav 6be00aeecce15d4b2547496f45352003 CINVESTAV-IPN Mexico 207484e6583dd9c0c1af2f52ce04fdd8 Cinvestav ea481e58ca9c64e14d7982cb66bcd604 Cinvestav 3cd3ab69a079e614c15e4c750e7d3d60 BUAP 5848375cb8b0db28e94350f19dcb744f Benemérita Universidad Autónoma de Puebla 65efd11437264d48aa1f7486255a57bc 76 false [["minutes", "Minutes"], ["notes", "Notes"], ["paper", "Paper"], ["poster", "Poster"], ["slides", "Slides"], ["summary", "Summary"]] Instituto de Ciencias Nucleares a8e9fcd76e1d8226003e126130a290f6 Instituto de Ciencias Nucleares a8e9fcd76e1d8226003e126130a290f6 Instituto de Ciencias Nucleares, UNAM da1c1375d2cfe70e9ee406be1b0aabab 00:15 We present an analysis of the very-high-energy observations of the exceptional long-duration gamma-ray burst GRB 221009A performed by the H.E.S.S. telescopes starting 53 hr after the trigger. Although no significant VHE emission was detected during the observations on 2022 October 11, 12, and 17, flux upper limits were derived under challenging atmospheric conditions. Using the photohadronic model, we show that these upper limits are naturally explained by interactions of high-energy protons with synchrotron seed photons in the forward-shock region of the GRB jet. This study highlights the role of hadronic processes in interpreting late-time VHE observations of powerful GRBs.