bfys-physics November 2012

bfys-physics@nikhef.nl

9 participants
14 discussions

[Bfys-physics] Fwd: Answer to Nikhef with all the figures
by Wouter Hulsbergen 30 Nov '12

30 Nov '12

Dear all, Sheldon takes a special effort to convince us that there is nothing serious:-) Since there were some trouble on CDS he has put everything together and send it to me by mail. Please see the attachment. Thanks, Wouter -------- Original Message -------- Return-Path: <stone(a)physics.syr.edu> Received: from ambleve.nikhef.nl (ambleve.nikhef.nl [192.16.199.208]) by correze (Cyrus v2.3.7-Invoca-RPM-2.3.7-12.el5_7.2) with LMTPA; Fri, 30 Nov 2012 11:21:47 +0100 X-Sieve: CMU Sieve 2.3 Received: from localhost (localhost.localdomain [127.0.0.1]) by ambleve.nikhef.nl (Postfix) with ESMTP id 249917821E for <wouterh(a)nikhef.nl>; Fri, 30 Nov 2012 11:21:47 +0100 (CET) X-Virus-Scanned: amavisd-new at nikhef.nl Received: from ambleve.nikhef.nl ([127.0.0.1]) by localhost (ambleve.nikhef.nl [127.0.0.1]) (amavisd-new, port 10024) with LMTP id X3uwWoEDxbg5 for <wouterh(a)nikhef.nl>; Fri, 30 Nov 2012 11:21:46 +0100 (CET) Received: from filter1-utr.mf.surf.net (filter1-utr.mf.surf.net [195.169.124.152]) by ambleve.nikhef.nl (Postfix) with ESMTP id C26587821D for <wouterh(a)nikhef.nl>; Fri, 30 Nov 2012 11:21:46 +0100 (CET) Received: from smtp1.syr.edu (smtp1.syr.edu [128.230.18.82]) by filter1-utr.mf.surf.net (8.14.3/8.14.3/Debian-9.4) with ESMTP id qAUALhqj028590 for <wouterh(a)nikhef.nl>; Fri, 30 Nov 2012 11:21:44 +0100 Received: from pb-d-128-141-238-249.cern.ch (pb-d-128-141-238-249.cern.ch [128.141.238.249]) (authenticated bits=0) by smtp1.syr.edu (8.14.5/8.14.5) with ESMTP id qAUALZDZ004090 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NO); Fri, 30 Nov 2012 05:21:37 -0500 From: Sheldon Stone <stone(a)physics.syr.edu> Content-Type: multipart/mixed; boundary=Apple-Mail-6-154060653 Subject: Answer to Nikhef with all the figures Date: Fri, 30 Nov 2012 11:21:38 +0100 Message-Id: <BE8318E9-4B95-4DC6-81D0-D314756242D5(a)physics.syr.edu> Cc: Yuehong Xie <Yuehong.Xie(a)cern.ch>, Antimo Palano <antimo.palano(a)cern.ch>, Giacomo Graziani <Giacomo.Graziani(a)cern.ch> To: Wouter Hulsbergen <wouterh(a)nikhef.nl> Mime-Version: 1.0 (Apple Message framework v1085) X-Mailer: Apple Mail (2.1085) X-Bayes-Prob: 0.0001 (Score 0, tokens from: @@RPTN) X-Spam-Level: * X-Spam-Level: * X-Spam-Score: 1.50 (*) [Tag at 5.00] T_RP_MATCHES_RCVD,SPF(none:0),RBL(UCEPROTECT:2.2),RBL(DNSWL-high-medium:-0.7) X-CanIt-Geo: ip=128.230.18.82; country=US; region=NY; city=Syracuse; postalcode=13244; latitude=43.0377; longitude=-76.1396; metrocode=555; areacode=315; http://maps.google.com/maps?q=43.0377,-76.1396&z=6 X-CanItPRO-Stream: nikhef:wouterh@nikhef.nl (inherits from nikhef:default,base:default) X-Canit-Stats-ID: 07ItKlH13 - e730198b2b45 - 20121130 X-Antispam-Training-Forget: https://www.mf.surf.net/canit/b.php?i=07ItKlH13&m=e730198b2b45&t=20121130&c… X-Antispam-Training-Nonspam: https://www.mf.surf.net/canit/b.php?i=07ItKlH13&m=e730198b2b45&t=20121130&c… X-Antispam-Training-Spam: https://www.mf.surf.net/canit/b.php?i=07ItKlH13&m=e730198b2b45&t=20121130&c… X-Scanned-By: CanIt (www . roaringpenguin . com) Hi Unfortunately with CDS system we missed several figures in the response. The entire response with the figures is attached here. sincerely sheldon

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[Bfys-physics] Fwd: LHCB-PAPER-2012-040-001-COMMENT-011 (a comment has been made on your comment)
by Wouter Hulsbergen 30 Nov '12

30 Nov '12

Dear all, You can find the responses from Sheldon to our comments on the J/psiKK paper here: http://cdsweb.cern.ch/record/1496914 Cheers, Wouter

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[Bfys-physics] Fwd: [Theory-wide] Nikhef theory seminar in 10 minutes
by Robert Fleischer 29 Nov '12

29 Nov '12

Begin forwarded message: > From: Pierre Artoisenet <partois(a)nikhef.nl> > Date: November 29, 2012 1:48:58 PM GMT+01:00 > To: theory-wide(a)nikhef.nl > Subject: [Theory-wide] Nikhef theory seminar in 10 minutes > > Dear all, > > We have a theory seminar in 10 minutes (room H331). > See you there. > > Pierre > > > Speaker: Sebastian Jaeger > > Title: > B->Vll at small dilepton invariant mass, power corrections, and new physics > > Astract: > Rare B decays provide powerful probes of new degrees of freedom at the TeV > scale and beyond. I will review the basic theory of B decays, and then in > more detail the helicity structure of the rare semileptonic decays B->V l l. > In particular, I will present new work on controlling long-distance charm and > light quark loop effects. Our treatment is more conservative and robust than > the prevailing procedure based on QCD factorization alone; nevertheless we > find that a certain helicity hierarchy survives and implies that two > observables constructed from the angular distribution remain theoretically > extremely clean. We also find that this is true all the way down to the > endpoint of the dilepton invariant mass spectrum. I discuss the excellent > sensitivity to right-handed currents that this implies. > > > _______________________________________________ > Theory-wide mailing list > Theory-wide(a)nikhef.nl > https://mailman.nikhef.nl/mailman/listinfo/theory-wide

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[Bfys-physics] Fwd: [Theory-wide] Nikhef theory seminar -- Thursday Nov. 29 @ 2pm
by Robert Fleischer 28 Nov '12

28 Nov '12

Dear Bfys Friends, please see the seminar announcement below, for those who will be at Nikhef despite the LHCb week. Best regards, Robert Begin forwarded message: > From: Pierre Artoisenet <partois(a)nikhef.nl> > Date: November 28, 2012 10:34:09 AM GMT+01:00 > To: theory-wide(a)nikhef.nl > Subject: [Theory-wide] Nikhef theory seminar -- Thursday Nov. 29 @ 2pm > > Dear all, > > Tomorrow we have a theory seminar at 2pm in room H331. > The speaker is Sebastian Jaeger (see the title and the abstract > below). > > In the evening, we will go to the Polder restaurant, let me know > if you would like to join us. > > Regards, > Pierre > > > > Title: > > B->Vll at small dilepton invariant mass, power corrections, and new > physics > > Astract: > > Rare B decays provide powerful probes of new degrees of freedom at the TeV > scale and beyond. I will review the basic theory of B decays, and then in > more detail the helicity structure of the rare semileptonic decays B->V l > l. In particular, I will present new work on controlling long-distance > charm and light quark loop effects. Our treatment is more conservative and > robust than the prevailing procedure based on QCD factorization alone; > nevertheless we find that a certain helicity hierarchy survives and > implies that two observables constructed from the angular distribution > remain theoretically extremely clean. We also find that this is true all > the way down to the endpoint of the dilepton invariant mass spectrum. I > discuss the excellent sensitivity to right-handed currents that this > implies. > > _______________________________________________ > Theory-wide mailing list > Theory-wide(a)nikhef.nl > https://mailman.nikhef.nl/mailman/listinfo/theory-wide

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[Bfys-physics] Bfys Meeting Friday 23 November
by Tjeerd Ketel 26 Nov '12

26 Nov '12

Bfys Meeting Friday 23 November at 10h in N328 and continued at 14h in H331 10:00 Introduction and discussion on LHCB-PAPER-2012-040 by Wouter "Amplitude analysis and the branching fraction measurement of Bbar0s to JpsiK+K-"a (1h) 14:00 Rehearsals by Serena and Jeroen for the "Discrete" conference is Lisbon. Best regards, Tjeerd Paper: http://cdsweb.cern.ch/record/149418 ========================================================= http://agenda.nikhef.nl/conferenceDisplay.py?confId=2191 ========================================================= You have BOOKED a meeting in SeeVogh Research Network (http://research.seevogh.com). Title: Nikhef Description: Bfys Meeting 10-11h and 14-15h Community: LHCb Password: n328 Meeting Access Information: - Meeting URL SeeVogh R.N. http://research.seevogh.com/join?meeting=MsMiMI2u2eDsDM9D92Dt9s EVO International http://evo.caltech.edu/evoNext/koala.jnlp?meeting=MsMiMI2u2eDsDM9D92Dt9s - Password: n328 - Phone Bridge ID: 613 0930 Password: 6287 =========================================================

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[Bfys-physics] Bfys Meeting Friday 23 November at 9:30 and 13:30
by Tjeerd Ketel 20 Nov '12

20 Nov '12

Bfys Meeting Friday 23 November at 9:30 in N328 and continued at 13:30 in H331 In N328 9:30 Introduction and discussion on LHCB-PAPER-2012-040 by Wouter "Amplitude analysis and the branching fraction measurement of Bbar0s to JpsiK+K-" (1h) Please, read this paper in advance. 10:30 Introduction LHCB-PAPER-2012-045 by Niels (30') "Analysis of the resonant components in Bbar0 -> J/psi pi+pi-" In H331 13:30 Rehearsals by Serena and Jeroen for the "Discrete" conference is Lisbon. 13:30 "Very rare decays" by Serena Rare lepton decays of the B(s), D and K mesons are sensitive probes of New Physics. In particular, the search for the decays B(s) -> mu+mu- provides information on the presence of new (pseudo-)scalar particles. LHCb is well suited for these analyses due to its large acceptance and trigger efficiency, as well as its excellent invariant mass resolution and lepton identification capabilities. Results on these searches using data collected by LHCb in 2011 and 2012 are presented. 14:10 "Measurement of the CP violating phase in Bs mixing" by Jeroen. The determination of the CP-violating phase phi_s in B_s -> J/psi phi decays is one of the key goals of the LHCb experiment. Its value is predicted to be very small in the Standard Model but can be significantly enhanced in many models of new physics. We present the world's best measurement of phi_s and the first observation of a non-zero Delta Gamma_s based upon 1.0 fb−1 of data collected at LHCb during 2011. phi_s can also be measured using the predominantly CP-odd B_s -> J/psi pi pi decay mode. We present this measurement and the combination of phi_s from both J/psi phi and J/psi pi pi decay modes. Additionally we present first results on other B_s decay modes, potentially interesting for complementary measurements of phi_s, such as B_s -> phi phi and B_s → J/psi K∗0 decays. Best regards, Tjeerd Paper Jpsi KK : http://cdsweb.cern.ch/record/1494148 Paper Jpsi pipi: http://cdsweb.cern.ch/record/1494673 ========================================================= http://agenda.nikhef.nl/conferenceDisplay.py?confId=2191 ========================================================= You have BOOKED a meeting in SeeVogh Research Network (http://research.seevogh.com). Title: Nikhef Description: Bfys Meeting 9:30-11 and 13:30-14:40 Community: LHCb Password: n328 Meeting Access Information: - Meeting URL SeeVogh R.N. http://research.seevogh.com/join?meeting=MsMiMI2u2eDsDM9D92Dt9s EVO International http://evo.caltech.edu/evoNext/koala.jnlp?meeting=MsMiMI2u2eDsDM9D92Dt9s - Password: n328 - Phone Bridge ID: 613 0930 Password: 6287 =========================================================

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[Bfys-physics] Our comments on LHCb-PAPER-2012-044
by Tjeerd Ketel 19 Nov '12

19 Nov '12

Dear all, I collected comments from Patrick, Wouter, Antonio and myself in the attached file which I will upload at 23h tonight at the Cern Document Server before the deadline of 24h. Please, have a look and correct if necesssary. Best regards, Tjeerd PS Sorry for the delay in compilation.

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[Bfys-physics] Bfys Meeting Friday 16 November at 10h in N328
by Tjeerd Ketel 15 Nov '12

15 Nov '12

Bfys Meeting Friday 16 November at 10h in N328 Discussion on 10:00 LHCB-PAPER-2012-044 "Exclusive J/psi and psi(2S) Production at sqrt(s) = 7 TeV" As no volunteer offered to introduce the subject, I propose to sit together with those who read (part of) the paper and collect comments. I got them already from Patrick and put them protected on the Nikhef agenda. Before the deadline on 19 November I will collect more comments and send them around on Monday morning for a last check with the Nikhef group. Best regards, Tjeerd Paper: https://cdsweb.cern.ch/record/1491625?ln=en ========================================================= http://agenda.nikhef.nl/conferenceDisplay.py?confId=2189 ========================================================= You have BOOKED a meeting in SeeVogh Research Network (http://research.seevogh.com). Title: Nikhef Description: Bfys Meeting 10:00-10:50 h Community: LHCb Password: n328 Meeting Access Information: - Meeting URL SeeVogh R.N. http://research.seevogh.com/join?meeting=MvM2Ml2a2tDeDu9M9iDe9v EVO International http://evo.caltech.edu/evoNext/koala.jnlp?meeting=MvM2Ml2a2tDeDu9M9iDe9v - Password: n328 - Phone Bridge ID: 612 5732 Password: 6287 =========================================================

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Re: [Bfys-physics] [Nikhef-wide] Celebrating the evidence for the Bs->mumu decay in LHCb
by Patrick Koppenburg 13 Nov '12

13 Nov '12

... changing lists. As was pointed out in the seminar this morning, the space for susy has actually increased compared to our previous limit. Cheers, Patrick On 11/13/2012 01:39 PM, Marcel Merk wrote: > English version follows below the dutch > > Beste collegas en vrienden , > > Het LHCb experiment heeft bewijs gewonden voor het Bs->mumu verval, > hetgeen hiermee het meest zeldzame waargenomen B verval is. > (Voor de preprint zie: http://arxiv.org/abs/arXiv:1211.2674) > > De significantie van het bewijs is 3.5 sigma. Hiermee heeft het Standaard > Model voldaan aan zeer een stringente test. > Ook al zijn hierdoor het aantal mogelijkheden van supersymmetry > gereduceerd, > het resultaat betekent geenszins een uitsluiting van supersymmetrie. > > Zowel de experimentele en theoretische b-fysica groepen van het Nikhef > hebben > een centrale rol gespeeld in dit resultaat en de vergelijking met theorie. > > Bij deze nodigen we jullie uit voor een drankje in de hal vandaag > (dinsdag) > om thee-tijd (15h00). > > De b-fysica group. > > ---------------------------------------------------------------------------------------------------- > > Dear colleagues and friends, > > The LHCb experiment has announced 3.5 sigma evidence for the very rare > decay > of Bs->mumu, the rarest B-decay observed sofar. > (preprint: http://arxiv.org/abs/arXiv:1211.2674) > > The observation of this decay implies that the Standard Model has > passed an extremely > challenging test. Although the possibilities for supersymmetric models > are reduced, > supersymmetry is certainly not ruled out. > > Both the experimental and theory groups at Nikhef have played a > central role in this > result and the comparison to theory. > > You are invited to come and have a drink with us at tea time (today > Tuesday 15h00) > in the Nikhef hall. > > The b-physics group. > > > > > > _______________________________________________ > Nikhef-wide mailing list > Nikhef-wide(a)nikhef.nl > https://mailman.nikhef.nl/mailman/listinfo/nikhef-wide -- ======================================================================== Patrick Koppenburg Nikhef, Amsterdam http://www.koppenburg.org/address.html

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Re: [Bfys-physics] [Nikhef-wide] Celebrating the evidence for the Bs->mumu decay in LHCb
by Patrick Koppenburg 13 Nov '12

13 Nov '12

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bfys-physics November 2012