bfys-physics March 2015

bfys-physics@nikhef.nl

9 participants
19 discussions

[Bfys-physics] Fwd: Conference report circulation: CONF-2015-002, Angular analysis of the $B_d^0\to K^{*0}\mu^+\mu^-$ decay Dear colleagues,
by Marcel Merk 11 Mar '15

11 Mar '15

Dear bfys friends, Nikhef is not explicitly asked to give review comments on the paper below (B-->K*mumu), but given the impact of the result of the 2011 data I would invite you to have a look and give your comments to the paper. I am willing to collect the comments of our group. Please send them to me before the weekend. cheers, - Marcel ---------- Forwarded message ---------- From: Rolf Oldeman <rudolf.oldeman(a)cern.ch> Date: 10 March 2015 at 23:14 Subject: Conference report circulation: CONF-2015-002, Angular analysis of the $B_d^0\to K^{*0}\mu^+\mu^-$ decay Dear colleagues, To: "lhcb-general (LHCb General mailing list)" <lhcb-general(a)cern.ch> A conference report is available for your comments: Title: Angular analysis of the $B_d^0\to K^{*0}\mu^+\mu^-$ decay Contact authors: Christoph Langenbruch, Konstantinos Petridis, Nicola Serra Reviewers: Greig Cowan (chair), Stephane T'Jampens, Patrick Koppenburg, Michael Schmelling (EB) Analysis note: ANA-2013-097, INT-2013-058 Deadline: 16-Mar-2015 e-group: lhcb-conf-2015-002-reviewers Link: https://cds.cern.ch/record/2000337 Twiki: https://twiki.cern.ch/twiki/bin/viewauth/LHCbPhysics/BdToKstarMuMu Institutes requested to submit comments on the report: Bucharest-Magurele, Romania Milano-Bicocca, Italy Padova, Italy Maryland, USA After the deadline, the reviewers are charged with approving the report for public release, once they are satisfied that any comments have been taken into account. You can find all reports open for comments via the EB web-page, by clicking on Current Drafts. http://lhcb.web.cern.ch/lhcb/lhcb_page/collaboration/organization/editorial… Regards, Rolf Oldeman

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[Bfys-physics] Fwd: First circulation of publication draft for PAPER-2015-002, Search for pair production of long-lived heavy charged particles at LHCb
by Patrick Koppenburg 11 Mar '15

11 Mar '15

Hi all, A new paper for us. I'll keep silent on this one as I already commented on the last version before the 1st circulation. Cheers, Patrick -------- Forwarded Message -------- Subject: First circulation of publication draft for PAPER-2015-002, Search for pair production of long-lived heavy charged particles at LHCb Date: Wed, 11 Mar 2015 14:53:20 +0100 From: Rolf Oldeman <rudolf.oldeman(a)cern.ch> To: lhcb-general (LHCb General mailing list) <lhcb-general(a)cern.ch> Dear Colleagues, A paper is available for your comments: Title : Search for pair production of long-lived heavy charged particles at LHCb Journal : JHEP Contact authors : Viet Nga Thi La, Aurelio Bay, Tran Minh Tam Reviewers : Giovanni Passaleva (chair), Philip Ilten EB reviewer : Frederic Machefert EB readers : Nigel Watson, Justine Serrano Analysis note : ANA-2013-081 Deadline : 25-Mar-2015 e-group : lhcb-paper-2015-002-reviewers Link : https://cds.cern.ch/record/2000967 Authors : LHCb Twiki : https://twiki.cern.ch/twiki/bin/viewauth/LHCbPhysics/STauSearch The following institutes are requested to make institutional comments: LAPP, Annecy-Le-Vieux, France Tsinghua University, China NIKHEF VU, Netherlands Ferrara, Italy Syracuse, United States Zurich, Switzerland Please send any comments via the CDS system. It is the responsibility of the contact authors to provide replies on all comments made. Subsequent modification to the publication 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 are made. As the last step a short presentation is given to the collaboration and the paper is sent 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… Regards, Rolf Oldeman -- ======================================================================== Patrick Koppenburg LHCb Physics Coordinator Nikhef, Amsterdam & CERN http://www.koppenburg.org/address.html

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Re: [Bfys-physics] LHCB-PAPER-2015-008-001-COMMENT-007 (a comment has been made on your comment)
by Lennaert Bel 09 Mar '15

09 Mar '15

Dear all, We’ve received a reply to our comments. Personally I’m not particularly happy with the reply; although they implemented many of our comments, they replied negatively to a lot of trivial changes that I think would improve the quality of the paper (in fact, some of these are corrections of improper grammar!). But this is the first time I do this, so maybe I’m a bit too negative. Please take a look for yourselves. Cheers, Lennaert > On 05 Mar 2015, at 12:44, CERN Document Server Submission Engine <cds.support(a)cern.ch> wrote: > > Dear LHCb Colleague, > The comment (LHCB-PAPER-2015-008-001-COMMENT-004) that you made on LHCB-PAPER-2015-008-001 > (entitled: 'First observation and measurement of the branching fraction for the decay $B_s^0 \rightarrow D_s^{*\mp}K^\pm$') has itself been commented on by Alessandro Bertolin [CERN - PH/ULB] (alessandro.bertolin(a)pd.infn.it). > > This new comment (LHCB-PAPER-2015-008-001-COMMENT-007) may be seen at > http://cds.cern.ch/record/1997592 > > > Best regards, > The CERN Document Server Server support Team

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[Bfys-physics] Uitnodiging afstuderen 20 maart (Enschede)
by Elise Lobker 06 Mar '15

06 Mar '15

(For English, see below) Lieve vrienden, familie en collega's, Op 20 maart is het zover, ik ga afstuderen en zou het heel leuk vinden als jullie daar bij konden zijn! De presentatie is om 15:30, waarna ik hopelijk mijn diploma krijg. Daarna gaan we borrelen, waarbij ik ook voor avondeten zal zorgen. De locaties volgen nog, het is in ieder geval op de UT in Enschede. De titel van mijn afstuderen is: 'Search for long-lived exotic particles decaying to muon pairs'. Kunnen jullie me laten weten: - Of je bij de presentatie bent, - Of je op de borrel komt, - Of je mee wilt eten? Alvast bedankt voor het laten weten, hoop jullie dan te zien! Groetjes, Elise -- Dear friends, family and colleagues, On the 20th of March, I will graduate and I would really like it if you could attend! The presentation is at 15:30, after which we will have drinks to celebrate. The locations are to be announced, but it will be at the University of Twente in Enschede. The title of the talk is: 'Search for long-lived exotic particles decaying to muon pairs'. Could you let me know if you will join for: - The presentation, - Having drinks, - Dinner. Thank you for letting me know, and hope to see you there! Best regards, Elise

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[Bfys-physics] LHCB-PAPER-2015-010-001-COMMENT-006 (a comment has been made on your comment) (fwd)
by Tjeerd Ketel 06 Mar '15

06 Mar '15

Dear all, We received answers to out comments. Looks a very positive response and even includes an explanation for the dimidated Gaussian, two gaussian halves with different sigma split at their centre. http://www.slac.stanford.edu/econf/C030908/papers/WEMT002.pdf Please, Patrick have a look as well. Tjeerd ---------- Forwarded message -- -------- Date: Fri, 6 Mar 2015 13:06:51 +0100 From: CERN Document Server Submission Engine <cds.support(a)cern.ch> To: tjeerd(a)nikhef.nl Subject: LHCB-PAPER-2015-010-001-COMMENT-006 (a comment has been made on your comment) Dear LHCb Colleague, The comment (LHCB-PAPER-2015-010-001-COMMENT-003) that you made on LHCB-PAPER-2015-010-001 (entitled: 'Observation of the decay $\overline{B}_s^0 \rightarrow \psi(2S) K^+ \pi^-$') has itself been commented on by Greig Cowan [CERN - PH/ULB] (g.cowan(a)ed.ac.uk). This new comment (LHCB-PAPER-2015-010-001-COMMENT-006) may be seen at http://cds.cern.ch/record/1999175 Best regards, The CERN Document Server Server support Team

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[Bfys-physics] LHCB-PAPER-2015-010-001-COMMENT-003: Comment Received (fwd)
by Tjeerd Ketel 04 Mar '15

04 Mar '15

Our comments have been submitted Tjeerd ---------- Forwarded message ---------- Date: Wed, 4 Mar 2015 16:53:27 +0100 From: CERN Document Server Submission Engine <cds.support(a)cern.ch> To: tjeerd(a)nikhef.nl Subject: LHCB-PAPER-2015-010-001-COMMENT-003: Comment Received Dear LHCb Colleague, Your comment: document LHCB-PAPER-2015-010-001-COMMENT-003 has been correctly received. It will be soon added to our Document Server. The comment may be found at this URL: http://cds.cern.ch/record/1996990 It may also be viewed from the link 'View the N comments' of the document LHCB-PAPER-2015-010-001-COMMENT-003 (entitled: 'Observation of the decay $\overline{B}_s^0 \rightarrow \psi(2S) K^+ \pi^-$'). If you detect an error please let us know by sending an email to cds.support(a)cern.ch. Thank you for your comments.

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[Bfys-physics] Bfys Meeting Friday 6 March at 9:30 in N328 and Vidyo
by Tjeerd Ketel 03 Mar '15

03 Mar '15

Dear colleagues, Bfys Meeting Friday 6 March at 9:30 in N328 and Vidyo 9:30 - 10:00 Staff meeting (permanent staff only) 10:00 - 10:30 Nomination LHCb Physics Coordinator (All) 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=127 Best regards, Tjeerd

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[Bfys-physics] LHCb-PAPER-2015-010 and PAPER-2015-008
by Tjeerd Ketel 03 Mar '15

03 Mar '15

Dear colleagues, We will collect comments by email on the two papers: PAPER-2015-010, Observation of the decay Bbar0s -> psi(2S) K+ pi- Deadline : 04-Mar-2015 Link : https://cds.cern.ch/record/1992884 and PAPER-2015-008, First observation and measurement of the branching fraction for the decay B0s -> D*s-+ K+-$ Deadline : 02-Mar-2015 Link : https://cds.cern.ch/record/1992902 I will collect the comments for the first paper latest on Sunday and circulate them on Monday before updating and of the afternoon. Lennaert Bel will do the same for the second paper which has a later dead line. So latest comments on Monday for this one. Please, send your comments by reply to bfys-physics. Best regards, Tjeerd

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[Bfys-physics] Psi'Kpi paper
by Patrick Koppenburg 02 Mar '15

02 Mar '15

Dear all, Here are my comments on the "first" paper Observation of the decay Bbar0s -> psi(2S) K+ pi- Cheers, Patrick General: - We are surprised not to see a reference to http://arxiv.org/abs/1408.6457, e.g. in l. 15. - The fit in Fig.2 does not catch the high mass tail of the Bd well. If we understand right you use a simple 2-Gaussian model for the high mass side. Is that appropriate? Why not double CB or Hypathia? - You mention the Z_c^+ as motivation but then do not say anything about it. Please add in Section 5 that you tried it but it does not add any information. Also in the conclusions, say you do not need it witrh present stats. L.5 colour-suppressed L.64: You mean the ghost probability? Isn't there are ref for that (maybe the racking paper)? L.67: Has IP chi2 been defined before? Generally, is it needed to give all these cut values. "well separated from any PV" would mean the same. L.75: Suggest: "The chi2 of the fit, chi_DST^2, which has N degrees of freedom, is required to be less than five*N. (insert N and do the arithmetic) L.80-81: Is it possible to fail this cut and pass the DTF one? If not remove. L.84: The candidate is rejected if ... mass [24]. L.88: This is a very complicated way of writing P(K)>p(pi). Rephrase. L.110: the the L.111: Ball L.122: We had to check the meaning of dimidated in a dictionary and still do not understand what you mean. L.137: remove also L.142: same sign L.150: "but little structure elsewhere". What do you mean? L.157: K* is only used for natural spin-parity mesons. You probable mean any strange resonance decaying to Kpi. Fig.3: Add kinematical boundary. Is the Bs mass-constrained to get this plot? L.278: remove parenthesis. [4] collaboration -- ======================================================================== Patrick Koppenburg LHCb Physics Coordinator Nikhef, Amsterdam & CERN http://www.koppenburg.org/address.html

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bfys-physics March 2015