bfys-physics May 2015

bfys-physics@nikhef.nl

6 participants
7 discussions

[Bfys-physics] Bfys Meeting Friday 29 May at 10:00 in N328 and Vidyo
by Tjeerd Ketel 05 Jun '15

05 Jun '15

Dear colleagues, Bfys Meeting Friday 29 May at 10:00 in N328 and Vidyo 10:00 - 11:00 Discussion of LHCb-Paper-2015-024 by Jacco de Vries: "Measurement of the branching fraction ratio of Bc+ to psi(2S) pi+ with respect to Bc+ to J/psi pi+" Deadline : 8-Jun-2015 Link : https://cds.cern.ch/record/2018187 Vidyo link in Nikhef Bfys Meeting (at Institutes->Nikhef of Friday 24 October 2014) https://indico.cern.ch/event/348856/ protected by PIN 1328. Material (and also Vidyo link) at https://indico.nikhef.nl/conferenceDisplay.py?confId=173 Best regards, Tjeerd

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[Bfys-physics] PAPER-2015-024 for Nikhef
by Tjeerd Ketel 27 May '15

27 May '15

Dear all, We have an LHCb paper to discuss. Friday 5 June will be OK, but a bit short before the deadline. If somebody volunteers to introduce it already on coming Friday 29 May, there will be more time for feedback on our comments. Let me know. Best regards, Tjeerd ---------- Forwarded message ---------- Date: Mon, 25 May 2015 12:08:01 +0000 From: George Lafferty <george.lafferty(a)manchester.ac.uk> To: LHCb General mailing list <lhcb-general(a)cern.ch> Subject: First circulation of publication draft for PAPER-2015-024, Measurement of the branching fraction ratio of $B_c^+\to\psi(2S)\pi^+$ with respect to $B_c^+\to J/\psi\pi^+$ Resent-Date: Mon, 25 May 2015 14:09:15 +0200 Resent-From: <lhcb-general-dynamic(a)cern.ch> Dear Colleagues, A draft paper is available for your comments: Title : Measurement of the branching fraction ratio of $B_c^+\to\psi(2S)\pi^+$ with respect to $B_c^+\to J/\psi\pi^+$ Journal : PRD Contact authors : Liupan_An, Yiming_Li, Zhenwei_Yang Reviewers : Flavio_Archilli (chair), Andrea_Bizzeti EB reviewer : Ronan_McNulty EB readers : Justine_Serrano, Nicola_Serra Analysis note : ANA-2014-078 Deadline : 08-Jun-2015 e-group : lhcb-paper-2015-024-reviewers Link : https://cds.cern.ch/record/2018187 Authors : LHCb Twiki : https://twiki.cern.ch/twiki/bin/view/LHCbPhysics/Bc2psi2Spi3invfb The following institutes are requested to make institutional comments: Faculty_of_Physics_and_Applied_Computer_Science__Cracow__Poland Birmingham__United_Kingdom Glasgow__United_Kingdom Bari__Italy__INFN_Milano__Italy EPFL__Lausanne__Switzerland NIKHEF__Netherlands Please send any comments via the CDS system. It is the responsibility of the contact authors to provide replies to all comments made. Subsequent modification to the draft paper are made in consultation with the reviewers and during the EB reading. Following this, there will be a final meeting of the editorial board with contact authors and reviewers present where final decisions will be made. As the last step the collaboration is given a final opportunity to comment during a “silent approval” process, before the paper is submitted for publication. You can find all paper and conference report drafts open for comments via the EB web-page, by clicking on Current Drafts. http://lhcb.web.cern.ch/lhcb/lhcb_page/collaboration/organization/editorial… efault.html Best regards, George

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[Bfys-physics] Reminder Theory talk on CP violation at 16h00
by Marcel Merk 22 May '15

22 May '15

Time: 16.30 - 17.00, H320 Speaker: Wouter Dekens (RUG) Title: "CP violation beyond the standard model at low energies and the LHC" CP-violating beyond the standard model (BSM) physics in principle affects both low-energy precision experiments and the processes measured at the LHC. This talk will consider some of the possible effects of BSM physics in the two types of searches, focusing on B-meson mixing observables studied at LHCb and electric dipole moments (EDMs). Given the rather different processes involved in both experiments, the two searches tend to be sensitive to different BSM interactions, making them complementary to one another. Nevertheless, in certain models of BSM physics the two types of observables can become related to each other. Examples of the interplay between EDMs and B-meson mixing will be considered in both an effective-field-theory approach and a specific model of BSM physics, namely, the left-right model. 17.00 Borrel

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[Bfys-physics] Fwd: Hulp nodig van programmaleiders
by Marcel Merk 19 May '15

19 May '15

---------- Forwarded message ---------- From: Fred Bulten <b23(a)nikhef.nl> Date: 2015-05-19 14:20 GMT+02:00 Subject: Hulp nodig van programmaleiders To: Eric Laenen <t45(a)nikhef.nl>, Marcel Merk <i93(a)nikhef.nl>, Wouter Verkerke <verkerke(a)nikhef.nl>, Raimond Snellings < Raimond.Snellings(a)nikhef.nl>, Jo van den Brand <jo(a)nikhef.nl>, Aart Heijboer <aart.heijboer(a)nikhef.nl>, Niels van Bakel <nielsvb(a)nikhef.nl>, Patrick Decowski <decowski(a)nikhef.nl> Beste heren, Zoals jullie weten is volgende week donderdag de voetvalwedstrijd tegen Amolf en daarna de BBQ. Omdat het aantal aanmeldingen niet echt hoog is kan ik jullie hulp wel gebruiken om bij de OIO's/Postdocs/studenten te enthousiasmeren om mee te doen met de voetbalwedstrijd en de BBQ (dat mag ook door niet voetballers en is GRATIS;-) ). Stuur dus svp een berichtje rond in je groep (met eventuele verwijzing naar mijn mails), dat we alle hulp kunnen gebruiken om Amolf dit jaar te verslaan. Uiterste aanmelddatum is aanstaande vrijdag 22-5 om 10.00 uur. Alvast bedankt voor de medewerking. -- Met vriendelijke groet/With kind regards, ********************************************************* Fred Bulten FOM-Nikhef Nationaal instituut voor subatomaire fysica Financiële afdeling/Finance department Science Park 105 1098 XG AMSTERDAM tel: 0031 - 20 - 5925020 fax: 0031 - 20 - 5925155 *********************************************************

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[Bfys-physics] Z' discussion session/lecture
by Marcel Merk 11 May '15

11 May '15

Dear bfys friends, This afternoon at 14h00 Jan Willen van Holten has organized a lecture/discussion session on the physics of Z' bosons, H331. See the bfys google calendar for details, cheers, - Marcel

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[Bfys-physics] Comments on LHCb-Paper-2015-021
by Tjeerd Ketel 04 May '15

04 May '15

Dear all, Wouter introduced the LHCb-Paper-2015-021 this morning. He will also collect your comments by Cc before Wednesday and upload the combined comments on Thursday 16 April. 10:30 - 11:00 Discussion of LHCb-Paper-2015-021 by Wouter Hulbergen: "Study of W boson production in association with beauty and charm jets in the forward region" Deadline : 17-Apr-2015 Link : https://cds.cern.ch/record/2006575 Best regards, Tjeerd

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Re: [Bfys-physics] [Bfys-group] Fwd: Z' lecture
by Suvayu Ali 01 May '15

01 May '15

Hi Marcel, others, and Z' aficionados, I have a question that keeps puzzling me. Am I correct in noticing a sudden increased interest on Z' models? This puzzles me since I was under the impression these models have been excluded to almost 3TeV by direct searches! See: http://arxiv.org/abs/1405.4123 (assuming SM couplings). In fact, the limits were already past 1 TeV back in 2011! Do these results somehow not apply to some LHCb results (e.g. Bs → μμ)? If so, why? Are there other motivations than significantly weaker couplings for them to not show up in direct searches? Just a few itches I had to scratch ... Cheers, PS: Do we also have a page like this? https://twiki.cern.ch/twiki/bin/view/AtlasPublic/ExoticsPublicResults On Thu, Apr 30, 2015 at 11:22:04PM +0200, Marcel Merk wrote: > Dear bfys friends, > > You are all very welcome to join the informal lecture of Jan Willem on Z' > physics and the connection to right handed neutrino's.... > > ---------- Forwarded message ---------- > From: Jan-Willem van Holten <jwvholten(a)gmail.com> > Date: 30 April 2015 at 13:32 > Subject: Z' lecture > To: theory-wide(a)nikhef.nl, Marcel Merk <marcel.merk(a)nikhef.nl>, Bob van > Eijk <vaneijk(a)nikhef.nl> > > > Dear colleagues, > > at the request of some of our PhD/master students I will arrange an > informal lecture/discussion session on > Completing the standard model with right-handed neutrinos and Z' > > Time: Monday May 11, 14.00-16.00 (or how long it takes) > Place: H331 > > Everyone interested is welcome, basic knowledge of QFT theory and the > standard model will be assumed. > > Jan-Willem > > > > -- > Prof.dr. J.W. van Holten > > Theoretical Physics > Nikhef, Amsterdam > and Leiden University > Netherlands > _______________________________________________ > Bfys-group mailing list > Bfys-group(a)nikhef.nl > https://mailman.nikhef.nl/mailman/listinfo/bfys-group -- Suvayu Open source is the future. It sets us free.

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bfys-physics May 2015