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SUMMARY:NNLO QCD predictions for inclusive jet production at the LHC
DTSTART;VALUE=DATE-TIME:20181011T103000Z
DTEND;VALUE=DATE-TIME:20181011T113000Z
DTSTAMP;VALUE=DATE-TIME:20181012T164900Z
UID:indico-event-489@indico.lip.pt
DESCRIPTION:Speakers: João Pires (CFTP - IST)\nFixed order perturbation t
 heory has been a reliable tool for improving the accuracy of the Standard 
 Model predictions and establish its range of validity. In this talk I will
  present the calculation of the next-to-next-to-leading order (NNLO) QCD c
 orrections to inclusive jet production and related observables at hadron c
 olliders. To perform the calculation we employ the antenna subtraction sch
 eme which correctly captures the universal infrared (IR) singular behaviou
 r of the double-real\, real-virtual and double-virtual contributions enabl
 ing an analytic cancellation of IR singularities between real and virtual 
 corrections at NNLO. High-precision differential QCD predictions are discu
 ssed and compared to recent measurements of jet production at the LHC. We 
 show that the NNLO correction significantly reduces the scale uncertainty 
 compared to next-to-leading order (NLO) opening the path towards jet preci
 sion QCD phenomenology with the LHC.\nhttps://indico.lip.pt/event/489/
LOCATION:311 (LIP seminar room)
URL:https://indico.lip.pt/event/489/
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BEGIN:VEVENT
SUMMARY:News from the Higgs front
DTSTART;VALUE=DATE-TIME:20181108T113000Z
DTEND;VALUE=DATE-TIME:20181108T123000Z
DTSTAMP;VALUE=DATE-TIME:20181012T164900Z
UID:indico-event-491@indico.lip.pt
DESCRIPTION:Speakers: Ricardo Gonçalo (LIP)\nThe single most notable resu
 lt from the LHC experiments ATLAS and CMS was\, up to now\, the discovery 
 of the Higgs boson. After decades of searches\, this has finally allowed t
 he exploration of this sector\, which occupies such a central role in the 
 Standard Model. A huge amount of work has been devoted to measurements of 
 the Higgs boson properties and interactions\, using these measurements to 
 probe the SM in increasingly stringent ways\, and explore scenarios of new
  physics. During the past year\, several important results were published 
 by both experiments. This seminar will discuss these experimental highligh
 ts and the landscape they are uncovering.\nhttps://indico.lip.pt/event/491
 /
LOCATION:311 (LIP seminar room)
URL:https://indico.lip.pt/event/491/
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BEGIN:VEVENT
SUMMARY:Modern Meson Spectroscopy: The Importance of Unitarity for Experim
 ent\, Lattice & Models
DTSTART;VALUE=DATE-TIME:20181129T113000Z
DTEND;VALUE=DATE-TIME:20181129T123000Z
DTSTAMP;VALUE=DATE-TIME:20181012T164900Z
UID:indico-event-486@indico.lip.pt
DESCRIPTION:Speakers: George Rupp (CeFEMA/IST)\nThe most fundamental corne
 rstone of the PDG tables is the uniqueness of\nS-matrix pole positions of 
 unstable particles\, as a consequence of\nquantum-field-theory principles.
  Therefore\, the unitarity property of\nthe S-matrix should ideally be res
 pected in whatever description of\nhadronic resonances in experiment\, on 
 the lattice\, and in quark models.\nUnfortunately\, simple Breit-Wigner (B
 W) parametrisations continue to be\nwidely used in data analyses of hadron
 ic processes\, while lattice and\nmodel calculations are often still done 
 by ignoring strong decay and\nits dynamical effects. All such approaches m
 anifestly violate\nunitarity.\n\nIn the present talk I shall show how a BW
  description of a resonance\nproduces a wrong pole position\, even in the 
 elastic case\, while for\ninelastic decays the error can become huge\, in 
 excess of 100 MeV.\nIts consequences for meson spectroscopy and possible r
 emedies will be\ndiscussed. As for the lattice\, some recent calculations 
 of meson\nresonances will be presented that do satisfy unitarity\, by usin
 g\nLuescher's method to compute scattering phase shifts in a Euclidean\nfr
 amework. These calculations lend strong support to earlier model\ndescript
 ions of enigmatic resonances like the light scalar mesons\, as\nwell as th
 e puzzling states Ds0(2317)\, Ds0(2460)\, and X(3872). Finally\,\na case i
 s made for considering non-resonant\, threshold-related\nenhancements\, wh
 ich are a consequence of extended unitarity in\nproduction processes. Typi
 cal examples of such enhancements will be\ndiscussed\, as e.g. X(4260)\, X
 (4660)\, and Upsilon(10580).\n \nhttps://indico.lip.pt/event/486/
LOCATION:311 (LIP seminar room)
URL:https://indico.lip.pt/event/486/
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