The 11th international conference on Direct Reactions with Exotic Beams (DREB2022) is part of the biennial series, which began in 1999 at MSU, East Lansing, at the initiative of physicists working in the field from MSU, IPN-Orsay, and FSU. The following meetings were held at Orsay (2001), Guildford (2003), East Lansing (2005), Wako (2007), Tallahassee (2009), Pisa (2012), Darmstadt (2014), Halifax (2016), and Matsue (2018). The scientific program is devoted to the latest experimental and theoretical research and developments in nuclear reactions with exotic nuclei. The topics will include the following subjects relevant to direct reactions:

• Nuclear astrophysics
• Spectroscopy of exotic nuclei, drip-line and unbound nuclei
• Nuclear force and Short-range correlations
• Advances in direct reaction theory
• New instrumentation for direct reaction studies
• Ab-initio methods for structure and reactions
• Clustering phenomena probed by nuclear reactions

This seminar will take place at Sala de Xuntas and will be streamed on Zoom

https://zoom.us/j/97561282565?pwd=eE1mSFNqcnpL

The 9th International Workshop on Acoustic and Radio EeV Neutrino Detection Activities (ARENA 2022) will be held in Hotel NH Collection Santiago de Compostela, Spain, just 5 min. walking distance to the historic part of Santiago. ARENA is the major bi-annual event for scientists to pioneer, develop and consolidate techniques for ultra-high-energy particle detection, paving the way to the future.

The new amazing discoveries reported from high-energy neutrino, gamma-ray and gravitational wave detectors have started the exciting era of multi-messenger astronomy, opening a new window to the most extreme universe. 

More information and registration: https://indico.cern.ch/event/826366/

This seminar will take place at Sala de Xuntas and will be streamed on Zoom

https://zoom.us/j/97561282565?pwd=eE1mSFNqcnpL

TBA

Abstract: The formalism of Baier-Dokshitzer-Mueller-Peigné-Schiff and Zakharov (BDMPS-Z) determines modifications of parton splittings in the QCD plasma that arise from medium-induced gluon radiation. Here, we extend the BDMPS-Z formalism to medium-modifications of the gluon splitting into two massive charm quarks. We derive a compact path-integral formulation that resums effects from arbitrary many interactions with the medium. We identify two qualitatively different phenomena: a medium-induced momentum broadening that increases the invariant mass of quark-anti-quark pair and a medium-enhanced production of such pairs.

https://arxiv.org/abs/2203.11241

This seminar will take place at Sala de Xuntas and will be streamed on Zoom

https://zoom.us/j/97561282565?pwd=eE1mSFNqcnpL

Meeting ID: 975 6128 2565

Passcode: 738971

Over the last fifteen years, hints of a surprising relationship that seems to exist between quantum field theory and the theory of transcendental numbers have been found. An intriguing pattern emerges, in particular, in perturbative computations of field theories that exhibit so-called superconformal symmetry. These theories are precisely the ones involved in the AdS/CFT correspondence or Maldacena conjecture. In this talk, after reviewing the funniest properties of transcendental numbers, I am going to tell what exactly this relationship between quantum field theories and transcendental numbers consists of, and I will mention the recent advances in the task of verifying it. I am going to conclude with a series of conjectures about the Riemann zeta function derived in this framework.

This coloquium will take place in the Aula Magna of the Faculty of Physics and will be streamed on Zoom.

Join Zoom meeting

https://zoom.us/j/97561282565?pwd=eE1mSFNqcnpLOWxiKy9JejRBendNQT09

Meeting ID: 975 6128 2565

Passcode: 738971

‘Transfronteirizas, conversas de arte e ciencia’, o ciclo de diálogos en liña do Instituto Galego de Física de Altas Enerxías ( IGFAE), cumpre estes días o seu segundo aniversario e celébrao cunha nova edición o próximo 19 de maio, por primeira vez en formato presencial. O encontro entre Estíbaliz Espinosa e Gastón Giribet, moderado polo investigador do IGFAE José Edelstein, será no auditorio da Facultade de Ciencias da Comunicación da USC ás 19:00 con entrada de balde ata completar capacidade. Quen non poida achegarse tamén poderá seguir o evento en directo a través da canle de Youtube do IGFAE.

Nesta décima edición de ‘Transfronteirizas’ falaremos de astronomía, buracos negros e poesía. Estíbaliz Espinosa, cantante e escritora, converteu a súa curiosidade sobre o ceo e o universo en material sensible a través da súa obra. Gastón Giribet, físico teórico, leva toda unha vida pensando nos buracos negros e as abordaxes literarias e filosóficas sobre as dimensións do universo e estes astros que son fonte de tantos paradoxos.

Estíbaliz Espinosa (A Coruña, 1973) é escritora, comunicadora de ciencia e mezzosoprano. Licenciouse en Socioloxía e en Filoloxía Hispánica na Universidade da Coruña, estudou astronomía como amadora. Publicou varios libros de poesía en galego (Curiosidade ou As neuronas irmás, entre outros), traducións, relatos e ensaio. Artella actividades arredor da poesía, astronomía e música. Traballa para entidades como a Orquestra Sinfónica de Galicia, Museos Científicos Coruñeses e actualmente imparte escrita creativa na Universidade da Coruña.

Gaston Giribet (Buenos Aires, 1973) é doutor en física. É Profesor de Física Teórica da Universidade de Buenos Aires, e foi membro doutras institucións, como o Institute for Advanced Study de Princeton, New York University, e a Université Libre de Bruxelles. É autor de máis de cen artigos científicos e, xunto a José Edelstein, publicou o libro Cordas e supercuerdas: a natureza microscópica das partículas e do espaciotiempo.

Rosa Montero inaugurou dous anos de intercambio interdisciplinar

Organizado polo IGFAE, centro mixto da Universidade de Santiago de Compostela (USC) e a Xunta de Galicia, ‘Transfronteirizas, conversas de arte e ciencia\\\\\\\\\\\\\\\' é un ciclo de diálogos virtuais emitidos en Youtube no que se convidan a figuras do ámbito cultural a explorar as interseccións entre a arte e a ciencia co noso persoal investigador, buscando un enfoque interdisciplinar. Nacido o 15 de maio de 2020 en plena pandemia con Rosa Montero, polo ciclo pasaron personaxes como Javier Ruibal, Alejandro Dolina, Anna R. Figueiredo ou Agustín Fernández Mallo co obxectivo de tender pontes e fomentar a participación entre a sociedade e a comunidade investigadora a través de distintas expresións artísticas.

·        Canle de Youtube do IGFAE: https://www.youtube.com/c/IGFAE

·        Edicións anteriores de ‘Transfronteirizas, conversas de arte e ciencia’: https://igfae.usc.es/igfae/gl/transfronteirizas/

Abstract: In this talk, I will review old and recent results on a special limit of string theory on AdS3×M7 with pure NS-NS fluxes: the limit in which the string length equals the AdS3 radius R. At this \"special point\" of the moduli space, the theory exhibits special properties, which I will discuss. Special attention will be focused on features of correlation functions that are related to the non-compactness of the boundary CFT target space, and on how these features change when the special point is approached. I will also review recent proposals for exact realizations of AdS/CFT correspondence at this special point.

This seminar will take place in the Sala de Xuntas (in person) and will be streamed on Zoom:

https://zoom.us/j/97561282565?pwd=eE1mSFNqcnpLOWxiKy9JejRBendNQT09

Meeting ID: 975 6128 2565 

Passcode: 738971

Abstract: we present the first study of rapidity-differential cross sections of coherent exclusive photoproduction of J/ψ mesons in heavy-ion ultraperipheral collisions (UPCs) at the LHC, dσ/dy(Pb+Pb→Pb+J/ψ+Pb), to NLO in the conventional collinear factorisation approach. Approximating the generalized parton distributions with their forward-limit parton distribution functions (PDFs), we quantify the NLO contributions in the cross sections, show that the real part of the amplitude and quark-PDF contributions must not be neglected, quantify the uncertainties arising from the scale-choice and PDFs, and compare our results with ALICE, CMS and LHCb J/ψ photoproduction data in Pb+Pb UPCs, exclusive J/ψ photoproduction data from HERA, and LHCb data in p+p. The scale dependence in dσ/dy(Pb+Pb→Pb+J/ψ+Pb) is significant, but we can find a scale-choice that reproduces the Pb+Pb UPC data both at 2.76 and 5.02 TeV collision energies. This process has traditionally been suggested to be a direct probe of nuclear gluon distributions. We show that the situation changes rather dramatically from LO to NLO in this conventional approach: the NLO cross sections reflect the nuclear effects of both gluons and quarks in a complicated manner where the relative signs of the LO and NLO terms in the amplitude play a significant role. We will also present an outlook for this observable within a tamed collinear factorisation, where we supplement the conventional approach with a programme of low x resummation and implementation of a crucial low Q subtraction. It will be shown how this opens up the possibility to constrain and ultimately determine the low x and low scale gluon PDF in the proton and heavy nuclei. 

This seminar will take place at Sala de Xuntas and will be streamed on Zoom

https://zoom.us/j/97561282565?pwd=eE1mSFNqcnpL