Averages of $b$-hadron, $c$-hadron, and $τ$-lepton properties as of summer 2014

Amhis, Y.; Banerjee, Sw.; Ben-Haim, E.; Blyth, S.; Bozek, A.; Bozzi, C.; Carbone, A.; Chistov, R.; Chrząszcz, M.; Cibinetto, G.; Dingfelder, J.; Gelb, M.; Gersabeck, M.; Gershon, T.; Gibbons, L.; Golob, B.; Harr, R.; Hayasaka, K.; Hayashii, H.; Kuhr, T.; Leroy, O.; Lusiani, A.; Miyabayashi, K.; Naik, P.; Nishida, S.; Campos, A. Oyanguren; Patel, M.; Pedrini, D.; Petrič, M.; Rama, M.; Roney, M.; Rotondo, M.; Schneider, O.; Schwanda, C.; Schwartz, A. J.; Shwartz, B.; Smith, J. G.; Tesarek, R.; Trabelsi, K.; Urquijo, P.; Van Kooten, R.; Zupanc, A.

doi:10.48550/arxiv.1412.7515

Cited by 248 publications

(539 citation statements)

References 486 publications

(840 reference statements)

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“…In each case, the observed mass splitting, ∆M , of the resulting meson mass eigenstates constrains the magnitude of the transition amplitudes. Although the experimental values are known to high precision [31] the SM theory predictions are plagued by large hadronic uncertainties, and there is still room for NP [32,33]. The phases of the transition amplitudes give rise to CP-violation in the respective meson-antimeson systems as observed through the parameters φ D , K , S ψKs Table II.…”

Section: Meson-antimeson Mixingmentioning

confidence: 99%

Scalar Democracy

Hill,

Machado,

Thomsen

et al. 2019

Preprint

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We conjecture that there exists a scalar bound state for every pair of fundamental fermions at a UV ("composite") scale, Λ v weak . This implies a large number of universally coupled, sub-critical Higgs doublets. All but the Standard Model Higgs are "dormant," with large positive squared masses and each receives a small vacuum expectation values via mixing with the Standard Model Higgs. Universal couplings, modulo renormalization group running effects, flips the flavor problem into the masses and mixings of the Higgs system. Doublets associated with heavy fermion masses, b, c, τ likely lie in the multi-TeV range, but may be observable at the current LHC, or a high-luminosity and/or an energy-upgraded LHC. In the lepton sector we are lead to a Higgs seesaw for neutrino masses, and corollary processes of observable flavor violation. The observation of the first sequential doublet coupled to bb with masses 3.5 TeV would lend credence to the hypothesis.

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Section: Meson-antimeson Mixingmentioning

confidence: 99%

Scalar Democracy

Hill,

Machado,

Thomsen

et al. 2019

Preprint

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“…Channel LO [8] NLO [27] NLO [28] LO(this work) QCDF [5] BABAR Data [15] Belle Data [15] HFAG Data [15] B 0 → π 0 π 0 0.12 0.29 0.23 1.17 +0.11 −0.12 0.3 1.83 ± 0.21 ± 0.13 0.90 ± 0.12 ± 0.10 1.17 ± 0.13…”

Section: Numerical Evaluation and Discussion Of Resultsmentioning

confidence: 99%

“…The branching ratio of B 0 → π 0 π 0 has been measured, whose data [15] are   (1.83 ± 0.21 ± 0.13) × 10 −6 ; (BABAR), (0.90 ± 0.12 ± 0.10) × 10 −6 ; (Belle), (1.17 ± 0.13) × 10 −6 , (HF AG).…”

Section: Introductionmentioning

confidence: 99%

Revisiting the $B^{0} \to π^{0}π^{0} $ decays in the perturbative QCD approach

Li,

2016

Preprint

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We recalculate the branching ratio and CP asymmetry for B0 (B 0 ) → π 0 π 0 decays in the Perturbative QCD approach. In this approach, we consider all the possible diagrams including non-factorizable contributions and annihilation contributions. We obtain Br( B0 (B 0 ) → π 0 π 0 ) = (1.17 +0.11 −0.12 ) × 10 −6 . Our result is in agreement with the latest measured branching ratio of B 0 → π 0 π 0 by the Belle and HFAG Collaborations. We also predict large direct CP asymmetry and mixing CP asymmetry in B 0 → π 0 π 0 decays, which can be tested by the coming Belle-II experiments.

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“…In order to simultaneously explain the muon and electron magnetic moment anomalies with common set of parameter values, we introduce a Z 2 symmetry in generic inert 2HDM which is allowed to be relaxed in the leptonic sector with universal Yukawa couplings. The lepton flavor universality (LFU) in the τ decays reported by the HFAG collaboration is then, trivially satisfied [52].…”

Section: The Modelmentioning

confidence: 98%

Leptonic $g-2$ anomaly in an extended Higgs sector with vector-like leptons

Bharadwaj,

Dutta,

Goyal

2021

Preprint

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We address the observed discrepancies in the anomalous magnetic dipole moments (MDM) of the muon and electron by extending the inert two Higgs Doublet Model (2HDM) with SM gauge singlet complex scalar field and singlet Vector-like Lepton (VLL) field. We obtain the allowed parameter space constrained from the Higgs decays to gauge Bosons at LHC, LEP II data and electro-weak precision measurements. The muon and electron MDM's are then explained within a common parameter space for different sets of allowed couplings and masses of the model particles.

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Averages of $b$-hadron, $c$-hadron, and $τ$-lepton properties as of summer 2014

Cited by 248 publications

References 486 publications

Scalar Democracy

Scalar Democracy

Revisiting the $B^{0} \to π^{0}π^{0} $ decays in the perturbative QCD approach

Leptonic $g-2$ anomaly in an extended Higgs sector with vector-like leptons

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