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The light invisible boson in FCNC decays of $B$ and $B_c$ mesons
High Energy Physics - Phenomenology · Submitted 24 Mar 2021
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim The bounds are used to predict the upper limits of branching fractions of corresponding $B_c$ decays, which are of the order of $10^{-6}$ or $10^{-5}$ when final meson is pseudoscalar or vector, respectively.
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The paper's own sentences, arranged. Each label is drawn from a closed vocabulary; the number beside it is the probability the classifier gave that label. Numbers in the tables are the authors', checked by code. No sentence in this record was written by a model.
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The abstract, sentence by sentence
In this paper, we study the FCNC decay processes of $B$ and $B_c$ meson, in which one invisible particle is emitted. Both the spin-0 and spin-1 cases are considered. The model-independent effective Lagrangian is introduced to describe the coupling between the light invisible boson and quarks. The constraints of the coupling coefficients are extracted by experimental upper limits of the missing energy in $B$ meson decays. The bounds are used to predict the upper limits of branching fractions of corresponding $B_c$ decays, which are of the order of $10^{-6}$ or $10^{-5}$ when final meson is pseudoscalar or vector, respectively. The maximum branch ratios are achieved when $m_\chi\approx3.5- 4$~GeV, where $m_\chi$ is the mass of the invisible particle.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | In this paper, we study the FCNC decay processes of $B$ and $B_c$ meson, in which one invisible particle is emitted. | contribution 0.99 | 0.84 | 0.04 | asserted 0.91 |
| s1 | Both the spin-0 and spin-1 cases are considered. | contribution 0.58 | 0.77 | 0.02 | asserted 0.95 |
| s2 | The model-independent effective Lagrangian is introduced to describe the coupling between the light invisible boson and quarks. | method 0.98 | 0.80 | 0.03 | asserted 0.99 |
| s3 | The constraints of the coupling coefficients are extracted by experimental upper limits of the missing energy in $B$ meson decays. | method 0.76 | 0.88 | 0.09 | asserted 1.00 |
| s4 | The bounds are used to predict the upper limits of branching fractions of corresponding $B_c$ decays, which are of the order of $10^{-6}$ or $10^{-5}$ when final meson is pseudoscalar or vector, respectively. | result 0.99 | 0.89 | 0.58 | asserted 0.98 |
| s5 | The maximum branch ratios are achieved when $m_\chi\approx3.5- 4$~GeV, where $m_\chi$ is the mass of the invisible particle. | result 1.00 | 0.88 | 0.36 | asserted 1.00 |
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The paper
Original abstract
In this paper, we study the FCNC decay processes of $B$ and $B_c$ meson, in which one invisible particle is emitted. Both the spin-0 and spin-1 cases are considered. The model-independent effective Lagrangian is introduced to describe the coupling between the light invisible boson and quarks. The constraints of the coupling coefficients are extracted by experimental upper limits of the missing energy in $B$ meson decays. The bounds are used to predict the upper limits of branching fractions of corresponding $B_c$ decays, which are of the order of $10^{-6}$ or $10^{-5}$ when final meson is pseudoscalar or vector, respectively. The maximum branch ratios are achieved when $m_\chi\approx3.5- 4$~GeV, where $m_\chi$ is the mass of the invisible particle.
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References
How the literature uses it
5 arXiv papers cite this in 7 sentences
Papers citing it · 3 sentences without a confident label
Cites it as background 4 papers
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Effective filed theory approach to the decay processes of $B$ with a single invisible scalar or fermion pair at the final state in dimension-5 or dimension-6 operators were studied at Refs. [ref]
Constraining light dark matter and mediator with $B^+ \rightarrow K^+ \nu \bar \nu$ data · A simple DM model · 0.93
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[ref] for the $d_i →d_j + X (+X)$ decays, and refs.
Deciphering the Belle II data on $B\to K \nu \bar\nu$ decay in the (dark) SMEFT with minimal flavour violation · Observables · 0.84
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Several papers have focused on these decay modes as probes of light invisible NP (see for example, Refs. [ref] ).
Constraints on light dark sector particles from lifetime difference of heavy neutral mesons · Introduction · 0.90
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