bfys-physics

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520 discussions

[Bfys-physics] Rehearsal talk Keri & Maarten for CCT
by Jeroen van Tilburg 05 Apr '16

05 Apr '16

Dear all, On Tuesday 5 April at 15:00 in H220, Keri and Maarten will rehearse their (combined) talk on CPT and Lorentz violation in B mixing for the Collider-Cross-talk seminar at CERN. These kind of talks are given on a white-board and are (mostly) without slides. Please come and help Keri and Maarten improve their talk. Groeten Jeroen

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[Bfys-physics] asls unblinded
by Jacco de Vries 01 Apr '16

01 Apr '16

Dear all, We are proud to present you the highly anticipated unblinded value of asls. Please keep it within the group for now, as we are yet to present the official LHCb result. In the attached plot you can see the new world average for asls (y-axis) as a green band, as well as the combined result for asld (x-axis) and the D0 dimuon anomaly (yellow ellips). We confirm the D0 result, and are in agreement with the SM prediction within 4.1 standard deviations. The deviation can most likely be attributed to an anomalous branching ratio of the Bs -> tau tau intermediate state, or processes involving the Z’ in the mixing. Cheers, on behalf of the asls crew, Jacco

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[Bfys-physics] Fwd: NOTE short circulation for Conference report: CONF-2016-004, Search for structure in the $B^0_s \pi^\pm$ invariant mass spectrum
by Patrick Koppenburg 16 Mar '16

16 Mar '16

Hi all, It's not assigned to us, but I still invite everyone to look at the note and comment. Cheers, Patrick -------- Forwarded Message -------- Subject: NOTE short circulation for Conference report: CONF-2016-004, Search for structure in the $B^0_s \pi^\pm$ invariant mass spectrum Date: Wed, 16 Mar 2016 11:26:59 +0000 From: George Lafferty <george.lafferty(a)manchester.ac.uk> To: LHCb General mailing list <lhcb-general(a)cern.ch> Dear colleagues, A conference report is available for your comments. In order to allow this important result to be available for Moriond QCD and to be made public before the D0 seminar at CERN next Monday, the dealine for comments has been set as midnight on Saturday 19 March. We hope that institute readers will be able to respond on this short timescale. Title: Search for structure in the $B^0_s \pi^\pm$ invariant mass spectrum Contact authors: Vladimir_Gligorov, Marco_Pappagallo, Tim_Gershon, Zhenwei_Yang, Jibo_He Reviewers: Patrick_Koppenburg (chair), Vanya_Belyaev, Simon_Eidelman (EB) Analysis note: ANA-2016-017 Deadline: e-group: lhcb-conf-2016-004-reviewers Link: Twiki: https://twiki.cern.ch/twiki/bin/view/LHCbPhysics/N2BsPi <https://twiki.cern.ch/twiki/bin/view/LHCbPhysics/N2BsPi> Institutes requested to submit comments on the report: NSC_KIPT__Kharkiv__Ukraine__Universitaet_Rostock__Germany CPPM__Marseille__France CERN__Switzerland Barcelona__Spain After the deadline, the reviewers are charged with approving the report for public release, once they are satisfied that all 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… Best regards, George

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[Bfys-physics] New flash from Moriond
by Jeroen van Tilburg 13 Mar '16

13 Mar '16

Hi, At Moriond, there were some interesting results show this morning. Have a look at their website for all presentations: https://indico.in2p3.fr/event/12279/ <https://indico.in2p3.fr/event/12279/> Most notable: - Belle has updated their measurement of R(D*) with semileptonic tags. Their 2015 result was only using hadronic tags, but measured both R(D) and R(D*). It is consistent with both the SM and previous results, but the difference of the WA and the SM will be more significant. To make the new WA, they are working on the correlation with their 2015 result. R(D) with SL tags is more challenging, due to the lower purity. They do have plans to use hadronic tau decays in the future. - Atlas does not see much B(s) -> mumu. They measure something like 0.9+1.1-0.8 x 10-9 for Bs. This is very correlated with their BR for Bd, as you can see from slide 18, due to their worse mass resolution. It is not really competitive with the CMS-LHCb combination. - Gudrun Hiller showed a comparison of the B->K*mumu in the highest q2 bin. This is the first time that I have seen a data-theory comparison in this bin. Up to now we only compared the q2 bins below the Jpsi resonance. In the region above the psi(2S), there is some (known) from charmonium resonances, but the form factor uncertainty should be lower. She finds a good agreement with the SM in this so-called low-recoil region, however, there is still much room for NP as seen in the large recoil region. Groeten Jeroen

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[Bfys-physics] Bfys Meeting Friday 4 March at 9:30 in N328 and Vidyo
by Tjeerd Ketel 02 Mar '16

02 Mar '16

Dear colleagues, Bfys Meeting Friday 4 March at 9:30 in N328 and Vidyo 9:30 - 9:55 Staff meeting (permanent staff only) 1. CB items LHCb week 2. "Projectruimte" proposals 3. Status analysis and hardware projects 4. AoB 10:00 - 10:45 "B(s) -> mumu normalization and B meson fragmentation fraction ratio fs/fd" by Jennifer Zonneveld Interruption for the Colloquium of Prof. Ignas Snellen at 11:00. Continue in H331 with: 13:30 - 13:50 "Introduction and discussion of LHCb-PAPER-2016-008 Angle gamma" by Marcel Merk Link: https://cds.cern.ch/record/2134730 Deadline: 11-Mar-2016 13:50 - 14:10 "Introduction and discussion of LHCb-PAPER-2016-007 Omega-b mass & lifetime" by ??? https://cds.cern.ch/record/2134041 Deadline: 9-Mar-2016 Material (and als Vidyo link) at https://indico.nikhef.nl/conferenceDisplay.py?confId=368 protected by PIN 1328. Direct Vidyo link on the Nikhef Indico (above) equivalent to: http://vidyoportal.cern.ch/flex.html?roomdirect.html&key=LCjLrDFb9I8L7EbRQT… protected by PIN 1328. Best regards, Tjeerd

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[Bfys-physics] Bfys Meeting Friday 4 March at 9:30 in N328 and Vidyo
by Tjeerd Ketel 29 Feb '16

29 Feb '16

Dear colleagues, Bfys Meeting Friday 4 March at 9:30 in N328 and Vidyo 9:30 - 9:55 Staff meeting (permanent staff only) 10:00 - 10:45 "B(s) -> mumu normalization and B meson fragmentation fraction ratio fs/fd" by Jennifer Zonneveld 10:45 - 11:30 "Introduction and discussion of LHCb-PAPER-2016-007" by ??? https://cds.cern.ch/record/213404 Deadline: 9-Mar-2016 Material (and als Vidyo link) at https://indico.nikhef.nl/conferenceDisplay.py?confId=368 protected by PIN 1328. Direct Vidyo link on the Nikhef Indico (above) equivalent to: http://vidyoportal.cern.ch/flex.html?roomdirect.html&key=LCjLrDFb9I8L7EbRQT… protected by PIN 1328. Best regards, Tjeerd

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[Bfys-physics] A second paper for Nikhef: PAPER-2016-008
by Tjeerd Ketel 29 Feb '16

29 Feb '16

Dear all, We have a second paper to discuss on Friday 4 March. As it get crowded with also the interesting colloquium at 11 h, I propose to reserve also some time in the afternoon. For both papers 007 and 008 I am looking for volunteers. Best regards, Tjeerd ---------- Forwarded message ---------- Date: Fri, 26 Feb 2016 22:05:31 +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-2016-008, Measurement of the mass and lifetime of the $\Omega_b^-$ baryon Resent-Date: Fri, 26 Feb 2016 23:06:33 +0100 Resent-From: <lhcb-general-dynamic(a)cern.ch> Dear Colleagues, A draft paper is available for your comments: Title : Measurement of the mass and lifetime of the $\Omega_b^-$ baryon Journal : PRD Contact authors : Steven_Blusk Reviewers : Francesca_Dordei (chair), Agnieszka_Dziurda EB reviewer : Claudia_Patrignani EB readers : Nicola_Serra, Justine_Serrano Analysis note : ANA-2016-002 Deadline : 11-Mar-2016 e-group : lhcb-paper-2016-008-reviewers Link : https://cds.cern.ch/record/2134730 Authors : LHCb Twiki : https://twiki.cern.ch/twiki/bin/viewauth/LHCbPhysics/OmegabtoOmegacPi The following institutes are requested to make institutional comments: Budker_and_Novosibirsk_State_University__Russia Edinburgh__United_Kingdom Liverpool__United_Kingdom Bologna__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 modifications to the draft will be 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, when final decisions will be made. As the last step, the collaboration will be given a final opportunity to comment during a “silent approval” period. 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 _board/default.html Best regards, George

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[Bfys-physics] Cake at 15:00
by Jennifer Zonneveld 26 Feb '16

26 Feb '16

Dear all, To celebrate my birthday coming Sunday, there will be cake today at 15:00 at the Spectrum. See you there! Jennifer

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[Bfys-physics] PAPER-2016-007 for Nikhef
by Tjeerd Ketel 24 Feb '16

24 Feb '16

Dear all, We have a new paper to discuss at Nikhef. Does somebody volunteer to introduce it next week Friday? Best regards, Tjeerd ---------- Forwarded message ---------- Date: Wed, 24 Feb 2016 15:25:29 +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-2016-007, Measurement of the CKM angle $\gamma$ using $B^0 \to D K^{*0}$ with $D \to K^0_S\pi^+\pi^-$ decays Resent-Date: Wed, 24 Feb 2016 16:31:36 +0100 Resent-From: <lhcb-general-dynamic(a)cern.ch> Dear Colleagues, A draft paper is available for your comments: Title : Measurement of the CKM angle $\gamma$ using $B^0 \to D K^{*0}$ with $D \to K^0_S\pi^+\pi^-$ decays Journal : JHEP Contact authors : Alexis_Vallier, Jackson_Smith, Frederic_Machefert Reviewers : Karim_Trabelsi (chair), Eli_Ben-Haim EB reviewer : Claudia_Patrignani EB readers : Mat_Charles, Vincent_Tisserand Analysis note : ANA-2014-105 Deadline : 9-Mar-2016 e-group : lhcb-paper-2016-007-reviewers Link : https://cds.cern.ch/record/2134041 Authors : LHCb Twiki : https://twiki.cern.ch/twiki/bin/viewauth/LHCbPhysics/BDKstGGSZ The following institutes are requested to make institutional comments: NIKHEF_VU__Netherlands Ferrara__Italy Faculty_of_Physics_and_Applied_Computer_Science__Cracow__Poland Birmingham__United_Kingdom Imperial_College_London__United_Kingdom Ruprecht-Karls-Universitat_Heidelberg__Germany Please send any comments via the CDS system. It is the responsibility of the contact authors to provide replies to all comments made. Subsequent modifications to the draft will be 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, when final decisions will be made. As the last step, the collaboration will be given a final opportunity to comment during a “silent approval” period. 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 _board/default.html Best regards, George

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[Bfys-physics] Bfys Meeting Friday 26 February at 9:30 in N328 and Vidyo
by Tjeerd Ketel 24 Feb '16

24 Feb '16

Dear colleagues, Bfys Meeting Friday 26 February at 9:30 in N328 and Vidyo 9:30 - 9:55 Staff meeting (permanent staff only) 10:00 - 10:45 presentation by Maarten van Veghel Material (and als Vidyo link) at https://indico.nikhef.nl/conferenceDisplay.py?confId=366 protected by PIN 1328. Direct Vidyo link on the Nikhef Indico (above) equivalent to: http://vidyoportal.cern.ch/flex.html?roomdirect.html&key=LCjLrDFb9I8L7EbRQT… protected by PIN 1328. Best regards, Tjeerd

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