Search for B c (ns) via the B c (ns) → B c (ms) π + π − transition at LHCb and Z 0 factory

Ke, H. W.; Li, Xue–Qian

doi:10.1007/s11433-010-4145-4

Cited by 13 publications

(4 citation statements)

References 25 publications

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“…Hence Z-factory is expected to enhance the eventaccumulation rate so that B c -meson excited states and possibly B * c -meson states are likely to be observed in near future. A possible measurement of radially excited states of the B c family via B c (ns) → B c ππ at LHC and the Z-factory has been discussed [18]. However the splitting between B c (1s) and its nearest member in the B c family i.e., B * c (1s) due to possible spin-spin interaction, which has been estimated [19] in the range 30 ≤ ∆m ≤ 50MeV, forbids the decay mode B * c → B c + π 0 (ηη ) by energymomentum conservation.…”

Section: Introductionmentioning

confidence: 99%

Magnetic dipole transitions of Bc and Bc* mesons in the relativistic independent quark model

et al. 2017

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We study M1-transitions involving mesons: B c (1s), B * c (1s), B c (2s), B * c (2s), B c (3s) and B * c (3s) in the relativistic independent quark (RIQ) model based on a flavor independent average potential in the scalar-vector harmonic form. The transition form factor for B * c → B c γ is found to have analytical continuation from spacelike to physical timelike region. Our predicted coupling constant g B * c Bc = 0.34 GeV −1 and decay width Γ(B * c → B c γ) = 23 eV agree with other model predictions. In view of possible observation of B c and B * c s-wave states at LHC and Z-factory and potential use of theoretical estimate on M1-transitions, we investigate the allowed as well as hindered transitions of orbitally excited B c -meson states and predict their decay widths in overall agreement with other model predictions. We consider the typical case of B * c (1s) → B c (1s)γ, where our predicted decay width which is found quite sensitive to the mass difference between B * c and B c mesons may help in determining the mass of B *

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Section: Introductionmentioning

confidence: 99%

Magnetic dipole transitions of Bc and Bc* mesons in the relativistic independent quark model

et al. 2017

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“…IR spectra of the pure asphalt [29] and PPO [17] have their own typical peaks at 728 cm 21 and 1196 cm 21 , respectively. The former is attributed to those alkyl chains containing more than four methylene groups linked together, which have a characteristic absorption of approximately 730 cm 21 [30] and later to aromatic ether linkages which have a characteristic absorption of approximately 1200 cm 21 . Typically sulfoxide groups in asphaltene are shown at 1031 cm 21 in asphalt spectrum (Fig.…”

Section: Ppo Synthesismentioning

confidence: 99%

Modification of asphalt using polymer‐forming monomer

Chung

Park

Mun

et al. 2014

Polymer Engineering & Sci

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A polymer‐forming monomer, dimethylphenol, was incorporated into neat asphalt at 180°C and tensile strength and rutting resistance of the asphalt improved dramatically. We found that polymerization occurred autonomously in the asphalt with some asphalt components and oxygen molecules in the air. The polymer produced was poly(phenylene oxide) (PPO), and its components were vanadium and its oxides. An increase in both the number and weight average molecular weights of PPO indicated a progress of polymerization. An increase in molecular weight contributed to an increase in the melting temperature, tensile strength, and rutting resistance parameter. NMR and IR spectra illustrate the corresponding peaks of PPO. DSC data reveals that the polymer has a melting temperature of 223°C, confirming the presence of PPO. Moreover, the asphalt containing a purported PPO displayed a 35.4% crystallinity, compared to the amorphous structure of asphalt. POLYM. ENG. SCI., 55:1128–1132, 2015. © 2014 Society of Plastics Engineers

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“…[45]; rare SM Z decays [46][47][48][49][50]; and light CP-odd Higgs bosons and supersymmetric models [51][52][53][54][55]. Recently, this topic has been addressed for some specific models [56][57][58][59][60].…”

Section: Introductionmentioning

confidence: 99%

Exposing the dark sector with future Z factories

Liu

Wang

et al. 2018

Phys. Rev. D

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We investigate the prospects of searching dark sector models via exotic Z-boson decay at future e þ e − colliders with Giga Z and Tera Z options. Four general categories of dark sector models, Higgs portal dark matter, vector-portal dark matter, inelastic dark matter, and axionlike particles, are considered. Focusing on channels motivated by the dark sector models, we carry out a model-independent study of the sensitivities of Z factories in probing exotic decays. The limits on branching ratios of the exotic Z decay are typically Oð10 −6 -10 −8.5 Þ for the Giga Z and Oð10 −7.5 -10 −11 Þ for the Tera Z, and they are compared with the projection for the high luminosity LHC. We demonstrate that future Z factories can provide its unique and leading sensitivity and highlight the complementarity with other experiments, including the indirect and direct dark matter search limits and the existing collider limits. Future Z factories will play a leading role in uncovering the hidden sector of the Universe in the future.

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Search for B c (ns) via the B c (ns) → B c (ms) π + π − transition at LHCb and Z 0 factory

Cited by 13 publications

References 25 publications

Magnetic dipole transitions of Bc and Bc* mesons in the relativistic independent quark model

Magnetic dipole transitions of Bc and Bc* mesons in the relativistic independent quark model

Modification of asphalt using polymer‐forming monomer

Exposing the dark sector with future Z factories

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