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    • CommentRowNumber101.
    • CommentAuthorUrs
    • CommentTimeJan 20th 2020

    added pointer to today’s

    • Suman Kumbhakar, Ashutosh Kumar Alok, Dinesh Kumar, S. Uma Sankar, New Physics solutions for bcτbarνb \to c \tau bar \nu anomalies after Moriond 2019 (arXiv:2001.06344)

    diff, v108, current

    • CommentRowNumber102.
    • CommentAuthorUrs
    • CommentTimeJan 21st 2020
    • (edited Jan 21st 2020)

    added a sentence to the end of the Idea-section:


    Notice that the channel R KR_K is just one of many in which flavour anomalies may and have been seen. There are other decay channels of B-mesons and there are also flavour anomalies in decays of, for instance, kaons (Buras 16, Buras 18).


    diff, v109, current

    • CommentRowNumber103.
    • CommentAuthorUrs
    • CommentTimeJan 21st 2020

    added graphics with cartoon of the BK *μ +μ B \to K^\ast \mu^+ \mu^- decay from Altmannshofer 14

    diff, v111, current

    • CommentRowNumber104.
    • CommentAuthorUrs
    • CommentTimeJan 26th 2020

    added pointer to today’s

    • Quan-Yi Hu, Lin-Lin Huang, Explaining bs + b\to s \ell^+ \ell^- data by sneutrinos in the R-parity violating MSSM (arXiv:1912.03676)

    diff, v112, current

    • CommentRowNumber105.
    • CommentAuthorUrs
    • CommentTimeFeb 4th 2020

    added pointer to today’s

    • Florian U. Bernlochner, Stephan Duell, Zoltan Ligeti, Michele Papucci, Dean J. Robinson, Das ist der HAMMER: Consistent new physics interpretations of semileptonic decays (arXiv:2002.00020)

    diff, v113, current

    • CommentRowNumber106.
    • CommentAuthorUrs
    • CommentTimeFeb 7th 2020
    • (edited Feb 7th 2020)

    added today’s publication data to

    • Ufuk Aydemir, Tanumoy Mandal, Subhadip Mitra, Addressing the R D (*)R_{D^{(\ast)}} anomalies with an S1 leptoquark from SO(10)SO(10) grand unification, Phys. Rev. D 101, 015011 (2020) (arXiv:1902.08108)

    diff, v114, current

    • CommentRowNumber107.
    • CommentAuthorUrs
    • CommentTimeFeb 13th 2020

    added pointer to today’s

    • Andrei Angelescu, Darius A. Faroughy, Olcyr Sumensari, Lepton Flavor Violation and Dilepton Tails at the LHC (arXiv:2002.05684)

    diff, v115, current

    • CommentRowNumber108.
    • CommentAuthorUrs
    • CommentTimeFeb 17th 2020
    • (edited Feb 17th 2020)

    added pointer to today’s

    • Sneha Jaiswal, Soumitra Nandi, Sunando Kumar Patra, Updates on SM predictions of |V cb|\vert V_{c b}\vert and R(D (*))R(D^{(\ast)}) in BD *ν B\to D^\ast \ell \nu_\ell decays (arXiv:2002.05726)

    diff, v116, current

    • CommentRowNumber109.
    • CommentAuthorUrs
    • CommentTimeFeb 18th 2020

    added pointer to today’s replacement

    • Richard H. Benavides, Luis Muñoz, William A. Ponce, Oscar Rodríguez, Eduardo Rojas, Minimal Z Z^\prime models for flavor anomalies (arXiv:1812.05077)

    diff, v117, current

    • CommentRowNumber110.
    • CommentAuthorUrs
    • CommentTimeFeb 18th 2020

    added pointer to todsy’s

    diff, v118, current

    • CommentRowNumber111.
    • CommentAuthorUrs
    • CommentTimeFeb 19th 2020

    Under Relation to other anomalies I added a graphics grabbed from today’s arXiv:2002.07184

    diff, v119, current

    • CommentRowNumber112.
    • CommentAuthorUrs
    • CommentTimeFeb 19th 2020

    added pointer also to this one from today:

    • Kingman Cheung, Zhuo-Ran Huang, Hua-Dong Li, Cai-Dian Lü, Ying-nan Mao, Ru-Ying Tang, Revisit to the bcτνb \to c \tau \nu transition: in and beyond the SM (arXiv:2002.07272)

    diff, v119, current

    • CommentRowNumber113.
    • CommentAuthorUrs
    • CommentTimeFeb 24th 2020

    added pointer to today’s

    • Quan-Yi Hu, Ya-Dong Yang, Min-Di Zheng, Revisiting the B-physics anomalies in R-parity violating MSSM (arXiv:2002.09875)

    diff, v120, current

    • CommentRowNumber114.
    • CommentAuthorUrs
    • CommentTimeMar 2nd 2020

    added pointer to today’s

    • Wolfgang Altmannshofer, P. S. Bhupal Dev, Amarjit Soni, Yicong Sui, Addressing R D *R_{D^\ast}, R K *R_{K^\ast}, muon g2g-2 and ANITA anomalies in a minimal R-parity violating supersymmetric framework (arXiv:2002.12910)

    diff, v121, current

    • CommentRowNumber115.
    • CommentAuthorUrs
    • CommentTimeMar 9th 2020

    added pointer to today’s

    • Soumia Lebbal, Noureddine Mebarki, Jamal Mimouni, Lepton Flavor Universality Violation in a 331 Model in bsl +l b \to s l^+ l^- Processes (arXiv:2003.03230)

    diff, v122, current

    • CommentRowNumber116.
    • CommentAuthorUrs
    • CommentTimeMar 10th 2020

    added pointer to new measurements announced today by LHCb:

    Result: statistical significance of the anomaly in the channel B 0K *0μ +μ B^0 \to K^{\ast 0} \mu^+ \mu^- increases from 3.0σ3.0 \sigma to 3.3σ3.3 \sigma

    diff, v123, current

    • CommentRowNumber117.
    • CommentAuthorUrs
    • CommentTimeMar 10th 2020

    added pointer to the corresponding presentation

    • Eluned Smith on behalf of the LHCb collaboration, Update of the B 0K *0μ +μ B^0 \to K^{\ast 0} \mu^+ \mu^- angular analysis at LHCb, 2020 (pdf)

    and included the last slide from there as a graphics into the entry

    diff, v124, current

    • CommentRowNumber118.
    • CommentAuthorUrs
    • CommentTimeMar 11th 2020

    added pointer also to today’s announcement on the main CERN webpage:

    diff, v125, current

    • CommentRowNumber119.
    • CommentAuthorUrs
    • CommentTimeMar 14th 2020

    added pointer to today’s CERN-Courier article:

    diff, v127, current

    • CommentRowNumber120.
    • CommentAuthorUrs
    • CommentTimeMar 17th 2020

    added pointer to today’s

    • Lorenzo Calibbi, M.L. López-Ibáñez, Aurora Melis, Oscar Vives, Muon and electron g2g-2 and lepton masses in flavor models (arXiv:2003.06633)

    diff, v128, current

    • CommentRowNumber121.
    • CommentAuthorUrs
    • CommentTimeMar 24th 2020

    added pointer to today’s

    diff, v129, current

    • CommentRowNumber122.
    • CommentAuthorUrs
    • CommentTimeMar 24th 2020

    added pointer to today’s

    and added its Table 1 to the entry

    diff, v129, current

    • CommentRowNumber123.
    • CommentAuthorUrs
    • CommentTimeApr 6th 2020

    added pointer to today’s

    • A. S. de Jesus, S. Kovalenko, F. S. Queiroz, K. Sinha, C. Siqueira, Vector-Like Leptons and Inert Scalar Triplet: Lepton Flavor Violation, g2g-2 and Collider Searches (arXiv:2004.01200)

    diff, v130, current

    • CommentRowNumber124.
    • CommentAuthorUrs
    • CommentTimeApr 16th 2020

    added pointer to today’s

    • Rusa Mandal, Clara Murgui, Ana Peñuelas, Antonio Pich, The role of right-handed neutrinos in bcτν¯b \to c \tau \bar \nu anomalies (arXiv:2004.06726)

    diff, v134, current

    • CommentRowNumber125.
    • CommentAuthorUrs
    • CommentTimeApr 20th 2020

    added pointer to today’s

    • Shaikh Saad, Anil Thapa, A Common Origin of Neutrino Masses and R D *R_{D^\ast}, R K *R_{K^\ast} Anomalies (arXiv:2004.07880)

    diff, v135, current

    • CommentRowNumber126.
    • CommentAuthorUrs
    • CommentTimeApr 21st 2020

    added pointer to today’s

    • P. S. Bhupal Dev, Rukmani Mohanta, Sudhanwa Patra, Suchismita Sahoo, Unified explanation of flavor anomalies, radiative neutrino mass and ANITA anomalous events in a vector leptoquark model (arXiv:2004.09464)

    diff, v136, current

    • CommentRowNumber127.
    • CommentAuthorUrs
    • CommentTimeApr 29th 2020
    • (edited Apr 29th 2020)

    finally added pointer to the publication

    that is behind that set of slides from Moriond 2019 that has long been cited in the entry:

    • Giacomo Caria on behalf of the Belle collaboration, Measurement of R(D)R(D) and R(D *)R(D^\ast) with a semileptonic tag at Belle, Moriond, EW 22/03/2019 (pdf)

    Then I added pointer to

    • Sneha Jaiswal, Soumitra Nandi, Sunando Kumar Patra, Updates on SM predictions of |V cb|\vert V_{c b}\vert and R(D (*))R(D^{(\ast)}) in BD *ν B\to D^\ast \ell \nu_\ell decays (arXiv:2002.05726)

    which does a re-analysis of the (D)\mathcal{R}(D)-anomaly including these new measurements (still finds a discrepancy of world averages in this channel at 3σ\sim 3 \sigma statistical significance)

    diff, v137, current

    • CommentRowNumber128.
    • CommentAuthorUrs
    • CommentTimeMay 1st 2020

    added pointer to today’s

    • Aritra Biswas, Soumitra Nandi, Ipsita Ray, Sunando Kumar Patra, New physics in $b\to s \ell \elk decays with complex Wilson coefficients (arXiv:2004.14687)

    diff, v138, current

    • CommentRowNumber129.
    • CommentAuthorUrs
    • CommentTimeMay 8th 2020

    added pointer to today’s

    • Bhubanjyoti Bhattacharya, Alakabha Datta, Saeed Kamali, David London, A Measurable Angular Distribution for B¯D *τ ν¯ τ\bar B \to D^\ast \tau^- \bar \nu_\tau Decays (arXiv:2005.03032)

    diff, v140, current

    • CommentRowNumber130.
    • CommentAuthorUrs
    • CommentTimeMay 12th 2020

    added pointer to today’s

    • Shaikh Saad, Combined explanations of (g2) μ(g-2)_\mu, R D *R_{D^\ast}, R K *R_{K^\ast} anomalies in a two-loop radiative neutrino mass model (arXiv:2005.04352)

    diff, v141, current

    • CommentRowNumber131.
    • CommentAuthorUrs
    • CommentTimeMay 27th 2020

    added pointer to these recent talk notes:

    • Niels Tuning, Recent results from LHCb, Nikhef 2020 (nikhef event:2253, pdf)

      In recent years a number of results in flavour physics have drawn some attention due to tensions with respect to Standard Model predictions. An overview of these results will be shown, together with a few recent results from this Spring, both on the flavour anomalies and ’classical’ flavour physics

    diff, v142, current

    • CommentRowNumber132.
    • CommentAuthorUrs
    • CommentTimeMay 27th 2020

    added pointer also to

    diff, v142, current

    • CommentRowNumber133.
    • CommentAuthorUrs
    • CommentTimeMay 27th 2020

    added to the section “Status and Outlook” (here) a slide from Tuning 20 and a quote from Garisto 20

    diff, v142, current

    • CommentRowNumber134.
    • CommentAuthorUrs
    • CommentTimeJul 2nd 2020

    added publication data for:

    diff, v143, current

    • CommentRowNumber135.
    • CommentAuthorUrs
    • CommentTimeJul 10th 2020

    added pointer to today’s

    • Lina Alasfar, Aleksandr Azatov, Jorge de Blas, Ayan Paul, Mauro Valli, B anomalies under the lens of electroweak precision (arXiv:2007.04400)

    diff, v145, current

    • CommentRowNumber136.
    • CommentAuthorUrs
    • CommentTimeJul 14th 2020

    added pointer to today’s

    • A. Karozas, G. K. Leontaris, I. Tavellaris, N. D. Vlachos, On the LHC signatures of SU(5)×U(1)SU(5) \times U(1)' F-theory motivated models (arXiv:2007.05936)

    diff, v147, current

    • CommentRowNumber137.
    • CommentAuthorUrs
    • CommentTimeAug 11th 2020

    added pointer to today’s

    • Suman Kumbhakar, Rukmani Mohanta, Investigating the effect of U 1U_1 vector leptoquark on buτν¯b \to u \tau \bar\nu mediated B decays (arXiv:2008.04016)

    diff, v148, current

    • CommentRowNumber138.
    • CommentAuthorUrs
    • CommentTimeAug 18th 2020

    added pointer to today’s

    • Syuhei Iguro, Teppei Kitahara, Implications for new physics from novel puzzle in B¯0(s)→D(∗)+(s){π−,K−} decays (arXiv:2008.01086)

    diff, v149, current

    • CommentRowNumber139.
    • CommentAuthorUrs
    • CommentTimeAug 20th 2020

    added pointer to today’s

    (these last three go in a section “hadronic decays” which might eventually want to be on a separate page)

    diff, v150, current

    • CommentRowNumber140.
    • CommentAuthorUrs
    • CommentTimeSep 4th 2020

    added pointer to today’s

    • K.S. Babu, P.S. Bhupal Dev, Sudip Jana, Anil Thapa, Unified Framework for BB-Anomalies, Muon g-2, and Neutrino Masses (arXiv:2009.01771)

    diff, v151, current

    • CommentRowNumber141.
    • CommentAuthorUrs
    • CommentTimeSep 7th 2020

    added pointer to today’s

    diff, v152, current

    • CommentRowNumber142.
    • CommentAuthorUrs
    • CommentTimeSep 17th 2020

    added pointer to today’s

    • Valerio Gherardi, David Marzocca, Elena Venturini, Low-energy phenomenology of scalar leptoquarks at one-loop accuracy (arXiv:2008.09548)

    diff, v153, current

    • CommentRowNumber143.
    • CommentAuthorUrs
    • CommentTimeSep 17th 2020
    • (edited Sep 17th 2020)

    Added a new graphics (here), from today’s GMV 20 (Fig. 9 there)

    diff, v153, current

    • CommentRowNumber144.
    • CommentAuthorUrs
    • CommentTimeOct 22nd 2020

    added pointer to today’s

    • Dayanand Mishra, Namit Mahajan On the Impact of Soft Photons on BK + B \to K \ell^+ \ell^- (arXiv:2010.10853)

    diff, v155, current

    • CommentRowNumber145.
    • CommentAuthorUrs
    • CommentTimeOct 28th 2020

    added pointer to today’s

    • Andreas Crivellin, Claudio Andreas Manzari, Marcel Alguero, Joaquim Matias, Combined Explanation of the Zbb¯Z \to b \bar b Forward-Backward Asymmetry, the Cabibbo Angle Anomaly, τμνν\tau \to \mu \nu \nu and bs + b \to s \ell^+ \ell^- Data (arXiv:2010.14504)

    diff, v158, current

    • CommentRowNumber146.
    • CommentAuthorUrs
    • CommentTimeOct 30th 2020
    • (edited Oct 30th 2020)

    added today’s announcement of a new measurement, confirming the flavour anomaly at 3.1σ3.1 \sigma, now also in B +B^+-decays:

    diff, v160, current

    • CommentRowNumber147.
    • CommentAuthorUrs
    • CommentTimeNov 3rd 2020
    • (edited Nov 3rd 2020)

    added pointer to today’s

    • Marco Ciuchini, Marco Fedele, Enrico Franco, Ayan Paul, Luca Silvestrini, Mauro Valli, Lessons from the B 0,+B *,0,+μ +μ B^{0,+} \to B^{\ast, 0,+} \mu^+ \mu^- angular analysis (arXiv:2011.01212)

    In the Standard Model Effective Theory (SMEFT) [41, 42], the significance of NewPhysics from the global bs + b \to s \ell^+ \ell^- analysis increases with the inclusion of new data, reaching a maximum of almost 6σ for the simple hypothesis of a non-vanishing [[leptoquark contribution]].

    diff, v161, current

    • CommentRowNumber148.
    • CommentAuthorUrs
    • CommentTimeNov 12th 2020

    added pointer to today’s

    • Aishwarya Bhatta, Rukmani Mohanta, Implications of new physics in BK 1μ +μ B \to K_1 \mu^+ \mu^-−decay processes (arXiv:2011.05820)

    diff, v162, current

    • CommentRowNumber149.
    • CommentAuthorUrs
    • CommentTimeNov 17th 2020

    added pointer to today’s

    • Sang Quang Dinh, Hieu Minh Tran, Muon g2g-2 and semileptonic BB decays in BDW model with gauge kinetic mixing (arXiv:2011.07182)

    and to its precursor

    • Geneviève Bélanger, Cédric Delaunay, Susanne Westhoff, A Dark Matter Relic From Muon Anomalies, Phys. Rev. D 92, 055021 (2015) (arXiv:1507.06660)

    diff, v163, current

    • CommentRowNumber150.
    • CommentAuthorUrs
    • CommentTimeDec 11th 2020

    added pointer to today’s

    • Francesco D’Eramo, Nejc Košnik, Federico Pobbe, Aleks Smolkovič, Olcyr Sumensari, Leptoquarks and Real Singlets: A Richer Scalar Sector Behind the Origin of Dark Matter (arXiv:2012.05743)

    diff, v165, current

    • CommentRowNumber151.
    • CommentAuthorUrs
    • CommentTimeDec 14th 2020

    added pointer to today’s

    • J. Kriewald, C. Hati, J. Orloff, A. M. Teixeira, A combined explanation of the B-meson decay anomalies with a single vector leptoquark (arXiv:2012.06315)

    diff, v166, current

    • CommentRowNumber152.
    • CommentAuthorUrs
    • CommentTimeJan 23rd 2021

    Added pointer to today’s review:

    • Florian U. Bernlochner, Manuel Franco Sevilla, Dean J. Robinson, Guy Wormser, Semitauonic b-hadron decays: A lepton flavor universality laboratory (arXiv:2101.08326)

    diff, v171, current

    • CommentRowNumber153.
    • CommentAuthorUrs
    • CommentTimeMar 2nd 2021

    I have added pointer to today’s survey of the state of the matter:

    and included the following quote (their emphasis!):

    Both R KR_K and P 5P'_5 have moved towards the Standard Model, but this actually improves the New Physics fits.

    The set of bsb \to s \ell \ell anomalies are alive and a global coherence remains after the measurements in 2019 and 2020. While some key measurements have central values that have moved towards the Standard Model predictions, the overall consistency of the data and the global tension with respect to the Standard Model has not diminished (in fact this may even enhance the significance for New Physics). The New Physics fit is a good fit (with pp-values in the ballpark of 50%), and the SM pull is high [[]]. In addition, data sets from all different experiments are compatible [[]].

    diff, v175, current

    • CommentRowNumber154.
    • CommentAuthorUrs
    • CommentTimeMar 24th 2021

    added pointer to today’s

    • Andrei Angelescu, Damir Bečirević, Darius A. Faroughy, Florentin Jaffredo, Olcyr Sumensari, On the single leptoquark solutions to the B-physics anomalies (arXiv:2103.12504)

    diff, v178, current

    • CommentRowNumber155.
    • CommentAuthorUrs
    • CommentTimeMar 24th 2021

    added pointer to todays’s

    • {#HLN21} Gudrun Hiller, Dennis Loose, Ivan Nišandžić, Flavorful leptoquarks at the LHC and beyond: Spin 1 (arXiv:2103.12724)

    with the quote:

    Naive combination of R KR_K and R K*R_{K*} measurements shows a deviation from the standard model above 4σ4 \sigma

    diff, v178, current

    • CommentRowNumber156.
    • CommentAuthorUrs
    • CommentTimeMar 24th 2021

    added pointer to today’s

    • Li-Sheng Geng, Benjamín Grinstein, Sebastian Jäger, Shuang-Yi Li, Jorge Martin Camalich, Rui-Xiang Shi, Implications of new evidence for lepton-universality violation in bs + b \to s \ell^+ \ell^- decays (arXiv:2103.12738)

    with this quote:

    We find that the data on clean observables is at variance with the SM at a level of 3.9signa3.9 \signa. Furthermore, scenarios withpure left-handed or axial currents provide a better desciption of these data with a significance close to 5σ5 \sigma.

    diff, v178, current

    • CommentRowNumber157.
    • CommentAuthorUrs
    • CommentTimeMar 25th 2021

    with this quote:

    With the recent updates [...][...] the case for new physics inrare B decays has been further strengthened. [...][...] Even if only the theoretically clean LFU observables [...][...] are considered, muon specific [[ Wilson coefficients for New Physics]] im prove over the Standard Model by Δ 24.7σ\sqrt{\Delta^2} \simeq 4.7 \sigma.

    It looks like the floodgates are opening up now. Let’s see how much longer I can keep up with logging the development.

    diff, v180, current

    • CommentRowNumber158.
    • CommentAuthorUrs
    • CommentTimeMar 31st 2021

    Added pointer to today’s:

    with this quote:

    With the recent result [[ of LHCb ]], for the first time a single observable affected by negligible theoretical uncertainties exhibits a deviation from the SM exceeding the 3σ3 \sigma level. Equally striking is the overall coherence of the picture that emerges, especially in bs + b \to s \ell^+ \ell^- −transitions. As we shall show in this paper, combining all the bs + b \to s \ell^+ \ell^-−observables in a very conservative way, the significance of the New Physics (NP) hypothesis formulated in 2014–2015 of a purely left-handed LFU-violating contact interaction has now reached a significance of 4.6σ4.6 \sigma.

    [][\ldots] A more structural way of addressing the flavor structure of the model is the idea of implementing Pati-Salam unification

    diff, v183, current

    • CommentRowNumber159.
    • CommentAuthorUrs
    • CommentTimeApr 1st 2021

    added pointer to this little video with Gino Isidori giving his impression on the flavour anomalies:

    • Barbara Gallavotti, starring Gino Isidori, How Particle Physics Works: Episode II - The New Analysis, June 2019 (youtube)

    diff, v184, current

    • CommentRowNumber160.
    • CommentAuthorUrs
    • CommentTimeApr 1st 2021
    • (edited Apr 1st 2021)

    Textbook account:

    diff, v185, current

    • CommentRowNumber161.
    • CommentAuthorUrs
    • CommentTimeApr 2nd 2021

    I have given the section “Statistical significance” subsections “Updates in 2020”, “Updates in 2021” etc. and re-ordered a little, accordingly. Also expanded slightly.

    diff, v187, current

    • CommentRowNumber162.
    • CommentAuthorUrs
    • CommentTimeApr 6th 2021

    added pointer to the recent:

    diff, v188, current

    • CommentRowNumber163.
    • CommentAuthorUrs
    • CommentTimeApr 8th 2021

    added a table (here) produced by Patrick Koppenburg just the other day, which lists a bunch of current experiments/channels, all involving muons somehow, and all seemingly showing deviation from theoretical prediction

    diff, v190, current

    • CommentRowNumber164.
    • CommentAuthorUrs
    • CommentTimeApr 13th 2021

    added pointer to today’s

    • Davide Lancierini, Gino Isidori, Patrick Owen, Nicola Serra, On the significance of new physics in bs + b \to s \ell^+ \ell^- decays (arXiv:2104.05631)

    which claims to do a new and more careful analysis of the global statistical significance of the flavour anomalies (and finds 3.9σ3.9 \sigma)

    diff, v191, current

    • CommentRowNumber165.
    • CommentAuthorUrs
    • CommentTimeApr 14th 2021

    added pointer to

    • David Marzocca, Sokratis Trifinopoulos, A Minimal Explanation of Flavour Anomalies: B-Meson Decays, Muon Magnetic Moment, and the Cabbibo Angle (arXiv:2104.05730)

    with this quote:

    the combined significance of the deviation reaches 4.7σ4.7\sigma. Furthermore,taking into account also less theoretically-clean observables [][\ldots] the overall significance of the deviations in this channel is raised to even above 6σ6\sigma, depending on the specific SM prediction employed

    diff, v192, current

    • CommentRowNumber166.
    • CommentAuthorUrs
    • CommentTimeMay 12th 2021

    added pointer to today’s

    • Jorge Alda, Jaume Guasch, Siannah Penaranda, Anomalies in B mesons decays: Present status and future collider prospects (arXiv:2105.05095)

    diff, v198, current

    • CommentRowNumber167.
    • CommentAuthorUrs
    • CommentTimeMay 17th 2021
    • (edited May 17th 2021)

    added pointer to today’s

    • We-Fu Chang, One colorful resolution to the neutrino mass generation, three lepton flavor universality anomalies, and the Cabibbo angle anomaly (arXiv:2105.06917)

    with this quote:

    From the global fits to various bsl +l b \to s l^+ l^-−data, the discrepancy is more than 5σ5\sigma from the SM predictions. The new result (59) further strengthens the lepton flavor universality violation. This anomaly alone convincingly indicates New Physics

    diff, v199, current

    • CommentRowNumber168.
    • CommentAuthorUrs
    • CommentTimeMay 17th 2021

    Added pointer to today’s

    • Joe Davighi, Anomalous ZZ' bosons for anomalous B decays (arXivL2105.06918)

    including this quote:

    A highly conservative method for combining the various bsb \to s \ell \ell anomalies, including the look-elsewhere effect, estimates their global significance to be 3.9σ. The combined set of discrepancies are by and large self-consistent with a common new physics origin involving muons.

    diff, v199, current

    • CommentRowNumber169.
    • CommentAuthorUrs
    • CommentTimeMay 28th 2021

    The other day I had added pointer to these recent slides:

    which give a more comprehensive/pedagogical discussion than usual

    diff, v201, current

    • CommentRowNumber170.
    • CommentAuthorUrs
    • CommentTimeJul 15th 2021

    added pointer to today’s

    diff, v205, current

    • CommentRowNumber171.
    • CommentAuthorUrs
    • CommentTimeAug 31st 2021

    added pointer to today’s

    • {#GengEtAl21} Li-Sheng Geng, Benjamín Grinstein, Sebastian Jäger, Shuang-Yi Li, Jorge Martin Camalich, Rui-Xiang Shi, Implications of new evidence for lepton-universality violation in bs + b \to s \ell^+ \ell^- decays (arXiv:2103.12738)

    with this quote, from the abstract:

    Motivated by [][\cdots] LHCb’s new measurements [][\cdots] we quantify the combined level of discrepancy with the Standard Model and fit values of short-distance Wilson coefficients. A combination of the clean observables R KR_K, R K *R_{K^\ast}, and B sμμB_s \to \mu \mu alone results in a discrepancy with the Standard Model at 4.0σ4.0 \sigma, up from 3.5σ3.5 \sigma in 2017. One-parameter scenarios with purely left-handed or with purely axial coupling to muons fit the data well and result in a 5σ\sim 5 \sigma pull from the Standard Model.

    diff, v206, current

    • CommentRowNumber172.
    • CommentAuthorUrs
    • CommentTimeSep 15th 2021

    added pointer to today’s:

    • Disha Bhatia, Nishita Desai, Amol Dighe, Frugal U(1) XU(1)_X models with non-minimal flavor violation for bsb \to s \ell \ell anomalies and neutrino mixing* (arXiv:2109.07093)

    diff, v208, current

    • CommentRowNumber173.
    • CommentAuthorUrs
    • CommentTimeOct 2nd 2021

    added this pointer

    with a link to a recent talk by Isidori (here)

    diff, v209, current

    • CommentRowNumber174.
    • CommentAuthorUrs
    • CommentTimeOct 19th 2021
    • (edited Oct 19th 2021)

    added pointer to today’s new measurement result:

    • LHCb collaboration Tests of lepton universality using B 0K S 0l +l B^0 \to K^0_S l^+ l^-− and B +K * + B^+ \to K^\ast \ell^+ \ell^- decays (arXiv:2110.09501)

    (Apparently it’s another but small addition to the emerging pattern, see here. Though from this graphics it looks rather convincing.)

    diff, v210, current

    • CommentRowNumber175.
    • CommentAuthorUrs
    • CommentTimeOct 20th 2021

    added to the Introduction (here) a paragraph on the branching ratios being “clean observables”

    diff, v211, current

    • CommentRowNumber176.
    • CommentAuthorUrs
    • CommentTimeOct 27th 2021

    added pointer to today’s

    • David London, Joaquim Matias, BB Flavour Anomalies: 2021 Theoretical Status Report (arXiv:2110.13270)

    diff, v216, current

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