bfys-physics October 2015

bfys-physics@nikhef.nl

4 participants
4 discussions

[Bfys-physics] Veldhoven 2016
by Marcel Merk 16 Oct '15

16 Oct '15

Dear bfys group members, Apologies to the staff-members for who part of this mail is redundant. This is to announce to you that registration is open for the Veldhoven 2016 conference on january 19 and 20, 2016. The meeting is open to all group members. PhD students who want to go there are asked to submit a poster on the topic of their work. You are also encouraged to subscribe for one of the masterclasses that are available upon registration. To register, please contact your supervisor who you can subscribe you for the meeting including the hotel reservation. Also, note that an early registration enhances the probability to stay overnight locally at the koningshof hotel. The meeting includes a focus session on collider physics with talks from John Ellis, Pamela Ferrari, Niels Tuning and Herman ten Kate. best regards, - Marcel PS Panos, yes this mail is also intended for you ;-)

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[Bfys-physics] [Colloquium] Mini Nikhef Workshop: Theory Meets Experiment, Friday 9 October 2015 (fwd)
by Niels Tuning 09 Oct '15

09 Oct '15

Hi Cern and Groningen friends, We set up the vidyo for the afternoon session. It is the same vidyo room as this morning! (https://indico.nikhef.nl/conferenceDisplay.py?confId=215) Cheers, Niels ---------- Forwarded message ---------- Date: Fri, 9 Oct 2015 13:47:44 +0200 From: Robert Fleischer <Robert.Fleischer(a)nikhef.nl> To: colloquium(a)nikhef.nl Cc: Marcel Merk <marcel.merk(a)nikhef.nl> Subject: [Colloquium] Mini Nikhef Workshop: Theory Meets Experiment, Friday 9 October 2015 Dear Colleagues, please note that the "Mini Nikhef Workshop: Theory Meets Experiment” starting at 14:00 will actually take place in *** H331 ***. Hope to see you there! With best regards, Robert Fleischer and Marcel Merk Begin forwarded message: From: Robert Fleischer <Robert.Fleischer(a)nikhef.nl> Subject: [Colloquium] Colloquium/Mini Nikhef Workshop: Theory Meets Experiment, Friday 9 October 2015 Date: 3 Oct 2015 18:45:59 GMT+2 To: colloquium(a)nikhef.nl Dear Colleagues, as Thomas Mannel (University of Siegen) will visit for the PhD defense of Kristof De Bruyn on Thursday at the VU, we have organised another "Mini Nikhef Workshop: Theory Meets Experiment" on Friday, 9 October 2015, 14:00-16:30, N328: https://indico.nikhef.nl/conferenceDisplay.py?confId=216 This meeting complements the Nikhef Colloquium at 11:00 (H331) by Thomas Mannel on “Searching for New Physics in Flavour Observables”: https://indico.nikhef.nl/conferenceDisplay.py?confId=197 We hope to see you there! With best regards, Robert Fleischer and Marcel Merk _______________________________________________ Colloquium mailing list Colloquium(a)nikhef.nl https://mailman.nikhef.nl/mailman/listinfo/colloquium _______________________________________________ Colloquium mailing list Colloquium(a)nikhef.nl https://mailman.nikhef.nl/mailman/listinfo/colloquium

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[Bfys-physics] Bfys Meeting Friday 9 October at 9:30 in N328 and Vidyo
by Tjeerd Ketel 09 Oct '15

09 Oct '15

Dear colleagues, Bfys Meeting Friday 9 October at 9:30 in N328 and Vidyo 9:30 - 9:55 Staff meeting (permanent staff only) 10:00 - 10:55 Introduction and discussion of LHCb-PAPER-2015-048 "Search for the lepton-flavour violating decay D0->e+-mu-+" by Maarten van Veghel Material (and also Vidyo link) at https://indico.nikhef.nl/conferenceDisplay.py?confId=215 Direct Vidyo link: http://vidyoportal.cern.ch/flex.html?roomdirect.html&key=LCjLrDFb9I8L7EbRQT… protected by PIN 1328. Best regards, Tjeerd

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[Bfys-physics] My comments
by Patrick Koppenburg 09 Oct '15

09 Oct '15

Hi Maarten, Gerco, Here are my comments: Physics: IN the Bs->emu paper we talked a lot of leptoquarks, here it's just R-parity susy. Also the Bs paper should be cited. Are the models you constrain still unaffected by other measurements? Intro: the physics motivations are a bit short. L.76: You may want to say a bit more on how electron ID is done. What's the efficiency? What's the mis-ID? This is critical here. L.83: why do you do the multiple candidate selection before the BDT? It must be more efficient to do so afterwards. L.127: why train separately? Wouldn't adding the year to the variables do the same? L.219: Computing the difference between weighted MC and unweighted MC is never a good way of determining a systematic. What's relevant is the uncertainty on the weights, not the difference with 1. This uncertainty could be L.229: 30% is a lot. Is that consistent with what we wrote in the Bs->emu paper? L.253: products of which couplings? You say too much or too little. Abstract: it says "further constrains" here and in conclusion "will help to further..." which much weaker. We should say the same. Text: L.8: varying by -> spanning over L.29: move ref [8] to where you explain BDTs. L.31: is -> was Fig.1 : It's not arbitrary units, it's dP/dm(emu), see paper 2014-020 for examples. Add a legend explaining which histo is which. Finally change green to another colour. The SB dislikes green. L.91: For simulated samples calibrated with data L.119: why "chi-square" and not $\chi^2$? Use \chisqip macro. L.145: The track multiplicity -> particle multiplicity L.152: events -> candidatea L.153: to the electron. L.171, 180, 185, 207, 243: events -> decays Fig.2 and 3: The labels are much too small. L.210 and 212: D->pipi decays L.241: what is the "Kpi channel"? Be precise L.243: do you need to repeat the fit result? L.250: you should give the expected limit too. L.252: repeat the Belle limit here. Else there's no place where they are long each other. L.253: "supersymmetric models of non-SM physics" does not mean much. Ref [4,5]: add collaboration names Cheers, Patrick -- ======================================================================== Patrick Koppenburg LHCb Physics Coordinator Nikhef, Amsterdam & CERN http://www.koppenburg.org/address.html

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bfys-physics October 2015