Study of exclusive charmless semileptonic<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>B</mml:mi></mml:math>decays and extraction of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mo stretchy="false">|</mml:mo><mml:msub><mml:mi>V</mml:mi><mml:mrow><mml:mi>u</mml:mi><mml:mi>b</mml:mi></mml:mrow></mml:msub><mml:mo stretchy="false">|</mml:mo></mml:math>at CLEO

Asner, D. M.; Edwards, K. W.; Briere, R. A.; Ferguson, T.; Tatishvili, G.; Vogel, H.; Watkins, M. E.; Rosner, Jonathan L.; Adam, N.; Alexander, J.; Cassel, D. G.; Duboscq, J. E.; Ehrlich, R.; Fields, L.; Gibbons, L. K.; Gray, R.; Gray, S. W.; Hartill, D. L.; Heltsley, B. K.; Hertz, D.; Jones, C. D.; Kandaswamy, J.; Kreinick, D. L.; Кузнецов, В. Е.; Mahlke-Krüger, H.; Meyer, T. O.; Onyisi, P. U. E.; Patterson, J. R.; Peterson, D.; Pivarski, J.; Riley, D.; Rýd, A.; Sadoff, A. J.; Schwarthoff, H.; Shi, X.; Stroiney, S.; Sun, W.; Wilksen, T.; Weinberger, M.; Athar, S. B.; Patel, R.; Potlia, V.; Yelton, J.; Rubin, P.; Cawlfield, C.; Eisenstein, B. I.; Karliner, I.; Kim, D.; Lowrey, N.; Naik, P.; Selen, M.; White, E. J.; Wiss, J.; Mitchell, R. E.; Shepherd, M. R.; Besson, D.; Pedlar, T. K.; Cronin-Hennessy, D.; Gao, K. Y.; Hietala, J.; Kubota, Y.; Klein, T.; Lang, B. W.; Poling, R.; Scott, A. W.; Smith, A.; Zweber, P.; Dobbs, S.; Metreveli, Z.; Seth, K. K.; Tomaradze, A.; Ernst, J.; Ecklund, K. M.; Severini, H.; Love, W. A.; Savinov, V.; Gutierrez, O. Aquines; Li, Z.; López, A.; Mehrabyan, S.; Méndez, H.; Vargas, J. E. Ramirez; Huang, G. S.; Miller, D. H.; Pavlunin, V.; Sanghi, B.; Shipsey, I. P. J.; Xin, B.; Adams, G. S.; Anderson, M.; Cummings, J. P.; Danko, I.; Hu, Dandan; Moziak, B.; Napolitano, J.; He, Q.; Insler, J.; Muramatsu, H.; Park, C. S.; Thorndike, E. H.; Yang, F.; Coan, T. E.; Gao, Y. S.; Artuso, M.; Blusk, S.; Butt, J.; Li, J.; Menaa, N.; Mountain, R.; Nisar, S.; Randrianarivony, K.; Sia, R.; Skwarnicki, T.; Stone, S.; Wang, J. C.; Zhang, K.; Bonvicini, G.; Cinabro, D.; Dubrovin, M.; Lincoln, A.

doi:10.1103/physrevd.76.012007

Cited by 50 publications

(72 citation statements)

References 47 publications

(57 reference statements)

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“…The CKM matrix is given by the UTfit collaboration [58]. The inclusive semileptonic branching fractions are given by the PDG [31], where we use B(D → Xl + ν l ) = B(D → Xl + ), consistent with [60], and employ B(…”

Section: Discussionmentioning

confidence: 99%

Flavor and new physics opportunities with rare charm decays into leptons

2016

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Updated standard model predictions for D (s) → P l + l − , l = e, µ, P = π, K and inclusive decays are presented. Model-independent constraints on |∆C| = |∆U | = 1 Wilson coefficients are worked out. New physics (NP) opportunities arise in semileptonic branching ratios for very large couplings only, however, are not excluded outside the resonance regions yet. The NP potential of resonanceassisted CP-asymmetries and angular observables is worked out. Predictions are given for leptoquark models, and include lepton flavor violating and dineutrino decays. Whether NP can be seen depends on flavor patterns, and vice versa.

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Section: Discussionmentioning

confidence: 99%

Flavor and new physics opportunities with rare charm decays into leptons

2016

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“…Belle (hadronic tag) [524] 1 .07 ± 0.16 ± 0.07 BaBar (semileptonic tag) [541] 1 .35 ± 0.21 ± 0.11 Average 1.19 ± 0.08 ± 0.06 CLEO [542] 0 .45 ± 0.23 ± 0.11 BaBar (untagged) [543] 0 .31 ± 0.06 ± 0.08 BaBar (semileptonic tag) [544] 0 .64 ± 0.20 ± 0.04 BaBar (loose ν-reco.) [526] 0 .38 ± 0.05 ± 0.05 Average 0.38 ± 0.04 ± 0.04…”

Section: Combined Extraction Of |V Ub | and |V Cb |mentioning

confidence: 99%

Averages of b-hadron, c-hadron, and $$\tau $$ τ -lepton properties as of summer 2016

et al. 2017

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This paper reports world averages of measurements of b-hadron, c-hadron, and τ -lepton properties obtained by the Heavy Flavour Averaging Group using results available before April 2021. In rare cases, significant results obtained several months later are also used. For the averaging, common input parameters used in the various analyses are adjusted (rescaled) to common values, and known correlations are taken into account. The averages include branching fractions, lifetimes, neutral meson mixing parameters, CP violation parameters, parameters of semileptonic decays, and Cabibbo-Kobayashi-Maskawa matrix elements. Selected world averages -continued from previous page. ∆Γ d /Γ d 0.001 ± 0.010 |q d /p d | 1.0010 ± 0.0008 ∆m s 17.765 ± 0.006 ps −1 ∆Γ s +0.084 ± 0.005 ps −1 |q s /p s | 1.0003 ± 0.0014 φ ccs s −0.049 ± 0.019 rad Unitarity-Triangle angle parameters sin2β ≡ sin2φ 1 0.699 ± 0.017 β ≡ φ 1 (22.2 ± 0.7) • −ηS φK 0 S 0.74 +0.11 −0.13 −ηS η K 0 0.63 ± 0.06 −ηS K 0 S K 0 S K 0 S 0.83 ± 0.17 φ s (φφ) −0.073 ± 0.115 ± 0.027 rad S B 0 s →K + K − , C B 0 s →K + K − (0.14 ± 0.03, 0.17 ± 0.03) −ηS J/ψ π 0 0.86 ± 0.14 −ηS D + D − 0.84 ± 0.12 −ηS J/ψ ρ 0 0.66 +0.13 −0.12 +0.09 −0.03(0.343 ± 0.002)% τ parameters, lepton universality, and |V us | g τ /g µ 1.0009 ± 0.0014 g τ /g e 1.0027 ± 0.0014 g µ /g e 1.0019 ± 0.0014* )0 s B ( * )0 s ) = (87.0 ± 1.7)% [34] measured as described in Ref. [35]. The proportions of the various production channels for non-strange B mesons have also been measured [22]. 4.3 b-hadron production fractions at high energy At high energy, all species of weakly decaying b hadrons may be produced, either directly or in strong and electromagnetic decays of excited b hadrons. Before 2010, it was assumed that the fractions of different species in unbiased samples of high-p T b-hadron jets where independent of whether they originated from Z decays, pp collisions at the Tevatron, or pp collisions at the LHC. This hypothesis was plausible under the condition Q 2 Λ 2 QCD , namely, that the square of the momentum transfer to the produced b quarks is large compared with the square of the hadronization energy scale. This hypothesis is correct in the limit p T → ∞, in which the production mechanism of a b hadron is completely described by the fragmentation of the b quark. For finite p T , however, there are interference effects of the production mechanism of the b quark and its hadronization. While formally suppressed by inverse powers of p T , these effects may be sizable, especially when the fragmentation probabilities are small as, e.g., in the case of b baryons. In fact, the available data show that the fractions depend on the kinematics of the produced b hadron. Both CDF and LHCb reported a p T dependence of the fractions, with the fraction of Λ 0 b baryons observed at low p T being enhanced with respect to that seen at LEP at higher p T . In our previous publication [1], we presented two sets of averages, one including only measurements performed at LEP, and another including only measurements performed ...

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“…The modelling is particularly important to the cascade decays a 1 , which involve the propagation of spin into broad intermediate vector resonances (which are difficult to model). The parameterisations are based on measurements from low energy experiments such as CLEO [19] and BaBar [20].…”

Section: Systematics From τ Decay Modellingmentioning

confidence: 99%

“…Standard CLEO (STD) -a parameterisation using the Kuhn-Santamaria (KS) model [21], extended by CLEO with resonances in π 0 π − spectrum. It was developed by CLEO Collaboration for the τ → π 0 π 0 π − ν τ decays [19]. Even though some of postulated resonances were not well established, the CLEO collaboration only fit the coefficients while masses and widths were taken from PDG tables and theoretical predictions of that time.…”

Section: Systematics From τ Decay Modellingmentioning

confidence: 99%

“…Even though some of postulated resonances were not well established, the CLEO collaboration only fit the coefficients while masses and widths were taken from PDG tables and theoretical predictions of that time. The strength of this model is the fit to three-dimensional data [19]. This parameterisation uses the same modelling for both three-and oneprong (the number of charged pions) channels.…”

Section: Systematics From τ Decay Modellingmentioning

confidence: 99%

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Deep learning approach to the Higgs boson CP measurement in H→ττ decay and associated systematics

et al. 2017

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The H → τ τ decays form the prime channel for the measurement of the Higgs boson state and tests of the CP invariance of Higgs boson couplings. A previous study has shown the viability of deep learning techniques for the measurement. In this paper, the study is expanded. Effects due to the partial modelling of experimental effects are discussed. Furthermore, systematics due to τ decay modelling for complex cascade decays to τ ± → a ± 1 ν τ → ρ 0 π ± ν τ → 3π ± ν τ are also addressed. Various parameterisations are considered using low-energy collision data.

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Study of exclusive charmless semileptonicBdecays and extraction of|Vub|at CLEO

Cited by 50 publications

References 47 publications

Flavor and new physics opportunities with rare charm decays into leptons

Flavor and new physics opportunities with rare charm decays into leptons

Averages of b-hadron, c-hadron, and $$\tau $$ τ -lepton properties as of summer 2016

Deep learning approach to the Higgs boson CP measurement in H→ττ decay and associated systematics

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