This Thursday’s Journal Club will be cancelled due to the PhD defence of Dominik around the same time. Please feel free to come to the defence presentation at K08 starting at 15:45. After the defence there will be apero in K52 starting from 17:00.
See you on Thursday 22nd Mar at K08 and K52 in Y36.
In this Thursday’s Journal Club, Mike will start with a ten minute discussion of the recent measurement of the 21cm line and possible connections to dark matter (https://www.nature.com/articles/nature25792, https://www.nature.com/articles/nature25791).
Then, Silvia Ferrario Ravasio (visiting from Milan) will talk for 40 minutes on `A Theoretical Study of Top-Mass Measurements at the LHC Using NLO+PS Generators of Increasing Accuracy’ (1801.03944).
Thursday 15th Mar at 16:30 in K52 (the K floor coffee room) in building Y36.
In this Thursday’s Journal Club, Xuan will start with a five to ten minute discussion of recent progress in N3LO Higgs production, based around 1802.00833.
Then for the main event, Kei Yamamoto (currently visiting from KMI, Nagoya University) will talk for 30 minutes on `Gluino-mediated electroweak penguin with flavor-violating trilinear couplings’ (1712.04959).
Thursday 8th Mar at 16:30 in K52 (the K floor coffee room) in building Y36.
In this Thursday’s Journal Club, Franz Herzog (visiting from NIKHEF) will talk for 30 minutes on `Geometric subtraction for real radiation at NNLO’.
Before Franz’s talk, we will have a 10 mins short introduction and discussion about the recent interesting progress in the field. You are welcomed to bring any paper or just arXiv number from the last few weeks. The idea is to introduce interesting work that could either be a milestone progress, important conclusion that people outside the field may also want to know or just good materials/summaries for daily research. We hope this small session would extend the scope of weekly prepared talks. It could also help people from different fields quickly capture what is going on in each others areas.
In this Thursday’s Journal Club, Ben Ruijl will talk for 30 minutes on `The R*-operation for Feynman graphs with generic numerators’ (1703.03776) in what promises to be a pedagogical introduction to the R* operation.
Then we will have a discussion session on recent papers etc.
Dear Journal Clubbers,
This semester, the particle physics journal club will be held on the Irchel campus, UZH. It will be held on
Thursdays at 16:30 in K52 (the K floor coffee room) in Y36 (the building where the particle physicists live).
The format will be 30 minutes of prepared presentation followed by 30+ minutes of discussion of recent papers, recent progress in own work, questions which have arisen in own work, etc. Beer and chips will kindly be provided by the Gehrmann group.
The upcoming schedule is:
22 Feb – Ben Ruijl – The R*-operation for Feynman graphs with generic numerators - 1703.03776
1 Mar – Alexander Ochirov – Massive spinor helicity - 1709.04891
8 Mar – Kei Yamamoto – Gluino-mediated electroweak penguin with flavor-violating trilinear couplings - 1712.04959
15 Mar – Silvia Ferrario Ravasio – A Theoretical Study of Top-Mass Measurements at the LHC Using NLO+PS Generators of Increasing Accuracy – 1801.03944
See you all next Thursday,
Michael & Xuan
Next Thursday, Jan 25, we will have a special seminar by Martijn Hidding (Trinity College Dublin)
Direct integration of linearly reducible elliptic Feynman integrals
Abstract: The evaluation of Feynman diagrams becomes increasingly complicated as the number of loops and scales increase. At 2-loop and higher there are diagrams which are not expressible in terms of multiple polylogarithms, but which are relevant to e.g. precision perturbative QCD calculations. I will discuss linearly reducible elliptic Feynman integrals. These integrals can be algorithmically solved by direct integration of their Feynman parametric representation, in terms of generalizations of multiple polylogarithms. This will be illustrated by the computation of a few representative integrals up to a sufficient order in the dimensional regulator.
We had a few suggestions for discussions. Indicatively, this is a first draft of the schedule
- Thurs, Jan 25, 2.30 PM in HIT E 41.1: Martijn Hidding (Trinity College Dublin), Direct integration of linearly reducible elliptic Feynman integrals
- Thurs, Feb 1st, 2PM, HIT E 41.1: Alex (Ochirov) will give an informal talk about his recent work on color-kinematic duality, ”Color-kinematic duality and amplitude relations”
In the lineup are also Armin on the two papers of Claude, Elliptic polylogarithms and iterated integrals on elliptic curves (set up and application to the sunrise), Ben, who will talk about his research, a discussion lead by Francesco on Henn, Bootstrapping pentagon functions, and some BSM from the Uni people, A three-site gauge model for flavor hierarchies and flavor anomalies.
On Friday 9/12 there will be a miniworkshop to celebrate Klaus
Hepp’s 80th birthday in HIT E 51. Six talks will cover the (many)
fields where he gave his significant contribution.
There will then be no JC the day before.
The JC on this day will take place in HIT K 52