Azimuthal field instability in a confined ferrofluid

Dias, Eduardo O.; Miranda, José A.

doi:10.1103/physreve.91.023020

Cited by 14 publications

(5 citation statements)

References 45 publications

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“…The vales are comparable to the Ref. [8] and [68,69] predicted the Z b (10604) as BB * molecule. In our model, the decay modes sensitive to the long distance structure of BB * molecule to be found forbidden.…”

Section: The Pv − Statessupporting

confidence: 86%

Dimesonic states with the heavy-light flavour mesons

Rathaud

Kumar

2017

Eur. Phys. J. Plus

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In this work, we have calculated the mass spectra and decay properties of dimesonic states in the variational scheme. The inter-mesonic interaction considered as the Hellmann potential and One Pion Exchange potential. The mass spectra of the DD bound states are calculated. The states X(3872), X2c(4013), Z b (10610)/X b and Z b (10650)/X b2 are compared with DD dimesonic bound states. To probe the molecular structure of the compared states, we have calculated the decay properties sensitive to their long and short distance structure of the hadronic molecule. The radiative decay for the state X(3872) into J/ψγ and ψ(2S)γ have been calculated and the ratio is found to be ten times lesser than the experimental value whereas the other decay modes are comparable with other theoretical and experimental results. This results restrict us to assigned the pure molecular structure to the X(3872). But, Our results suggests that the compared states are close to the molecular structure or have dominant molecular component in their wave function. Apart from these, the other calculated mass spectra of dimesonic states are predicted and for such bound states, the experimental search are suggested. PACS. Potential model-12.39.Pn -Exotic mesons-14.40.Rt -decays of other mesons-13.25.Jx IntroductionIn 2003, Belle reported the discovery of a charmonium like neutral state X(3872) with mass=3872 ± 0.6 ± 0.5 MeV and width < 2.3 MeV [1,2] which latter confirmed by DO [3], CDF [4] and BARBAR [5]. This discovery fed excitement in the charmonium spectroscopy due to unconventional properties. The state could not be explained through ordinary meson(qq) and baryon (qqq) scheme, yet. Indeed, the conventional theories predicts complicated color neutral structures and search of such exotic structures are as old as quark model [6,7]. After the discovery of X(3872), the large numbers of charge, neutral and vector states have been detected in various experiments and famous as the XYZ states. Recently, the charge bottomoniumlike resonances Z b (10610) and Z b (10650) have been reported by Belle Collaboration in the process Υ (5S) → Υ (nS)π + π − and Υ (5S) → h b (mP )π + π − [8]. Moreover, a another state reported by BESIII Collaboration [9] as a Z c (4025) in the e + e − → h c π + π − reaction. Again, the BESIII Collaboration reported one more state as a Z c (3900) from invariant mass J/ψπ in the e + e − → π − π + J/ψ reaction [10], whereas the Belle [11] and CLEO [12] reconfirmed the status of these states. The sub structure of the all these states are still a open question. They might driven the exotic structure like tetraquark, molecular or hybrid as predicted by theory of the QCD and needs extra theoretical attentions.Send offprint requests to: a Present address:

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Section: The Pv − Statessupporting

confidence: 86%

Dimesonic states with the heavy-light flavour mesons

Rathaud

Kumar

2017

Eur. Phys. J. Plus

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“…(19) is also interesting for effective hadronic models, which assume hadron-hadron potentials, and welcome lattice QCD data to compare with. In particular, in the literature D D and B B interactions are computed from meson exchange diagrams [88,89,90,91,92,93], and are applied to the study of the Z ± c and Z ± b tetraquarks. Moreover, there are also computations of the B B interactions in the open bottom channels [94] similar to ours, including the prediction of binding into a tetraquark.…”

Section: B B Potentials At the Physical Pion Massmentioning

confidence: 99%

BBinteractions with static bottom quarks from lattice QCD

et al. 2016

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The isospin, spin and parity dependent potential of a pair of B mesons is computed using Wilson twisted mass lattice QCD with two flavours of degenerate dynamical quarks. The B meson is addressed in the static-light approximation, i.e. the b quarks are infinitely heavy. From the results of the B B meson-meson potentials, a simple rule can be deduced stating which isospin, spin and parity combinations correspond to attractive and which to repulsive forces. We provide fits to the ground state potentials in the attractive channels and discuss the potentials in the repulsive and excited channels. The attractive channels are most important since they can possibly lead to a bound four-quark state, i.e. abbud tetraquark. Using these attractive potentials in the Schrödinger equation, we find indication for such a tetraquark state of two static bottom antiquarks and two light u/d quarks with mass extrapolated down to the physical value.

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“…Here, pions, sigmas and rho/omega particles contribute to the nuclear force at long, medium and short distances, respectively. Since 2003, the observed charmonium-like and bottomonium-like states have stimulated extensive interest in applying the OBE model to investigate the newly observed X(3872) [5][6][7][8][9][10][11][12], Y (3930)/Y (4140) [13][14][15] and Z b (10610)/Z b (10650) [7,16,17]. In addition, the interactions of two hadrons have been explored under the OBE model and more hadronic molecular states predicted [18][19][20][21][22][23][24][25][26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Possible strange hidden-charm pentaquarks from and interactions

Chen

Liu

2017

Chinese Phys. C

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Using the one-boson-exchange model, we investigate the Λ interactions by considering the one-eta-exchange and/or one-pion-exchange contributions. We further predict the existence of hidden-charm molecular pentaquarks. Promising candidates for hidden-charm molecular pentaquarks include a Ξ ′ cD * state with 0( 1 2 − ) and the Ξ * cD * states with 0( 1 2 − ) and 0( 3 2 − ). Experimental searches for these predicted hidden-charm molecular pentaquarks are an interesting future research topic for experiments like LHCb.

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Azimuthal field instability in a confined ferrofluid

Cited by 14 publications

References 45 publications

Dimesonic states with the heavy-light flavour mesons

Dimesonic states with the heavy-light flavour mesons

BBinteractions with static bottom quarks from lattice QCD

Possible strange hidden-charm pentaquarks from and interactions

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