Searching $B_c^{\ast }$ via conservation laws

Abstract

To distinguish $B_c^{\ast +}(1^3{S}_1)$ and $B_c^{+}(1^1{S}_0)$ in the experiments, we propose two methods based on the conservation laws. I. From the angular momentum conservation, a nonzero helicity of $J/\psi$ of $B_c^{(\ast )+}\to J/\psi {\pi }^{+}$ would be an evidence of $B_c^{\ast +}$. II. Since $B_c^{+}\to B^{+}\varphi$ is kinematically forbidden, $B_c^{\ast +}\to B^{+}\varphi$ provides a clean channel to probe $B_c^{\ast +}$\,. Particularly, our results show that $B_c^{\ast +}$ is promising to be observed at LHC via $B_c^{(\ast )+}\to J/\psi {\pi }^{+}$. On the other hand, we find that $\mathcal{B}(B_c^{\ast +}\to B^{+}\varphi )=(7.0\pm 3.0)\times 10^{-9}$, which is also feasible to be measured at the forthcoming experiments at HL-LHC and FCC-hh.

arXiv comment15 pages, 4 figures. Accepted by PRD

References in corpus (36)

• Properties of heavy quarkonia and B_c mesons in the relativistic quark model
• Mesons with Beauty and Charm: Spectroscopy
• Exclusive semileptonic and nonleptonic decays of the Bc meson
• Observation of B_c Mesons in p-bar p Collisions at sqrt{s} = 1.8 TeV
• Spectroscopy of B_c Mesons in the Relativized Quark Model
• $B_c$ spectroscopy
• Weak decays of the B_c meson to charmonium and D mesons in the relativistic quark model
• Using Heavy Quark Spin Symmetry in Semileptonic $B_c$ Decays
• Semileptonic B_c-meson decays in sum rules of QCD and NRQCD
• Precise predictions of charmed-bottom hadrons from lattice QCD
• Observation of the Decay $B_c^{\pm }\to J/\psi {\pi }^{\pm }$ and Measurement of the $B_c^{\pm }$ Mass
• Observation of an Excited $B_c^{\pm }$ Meson State with the ATLAS Detector
• Semileptonic and non-leptonic B_c decays
• Observation of two excited B${}_{\mathrm{c}}^{+}$ states and measurement of the B${}_{\mathrm{c}}^{+}$(2S) mass in pp collisions at $\sqrt{s}=$ 13 TeV
• Rare baryon decays Lambda_b -> Lambda l+ l- (l=e, mu, tau) and Lambda_b -> Lambda gamma : Differential and total rates, lepton- and hadron-side forward-backward asymmetries
• Phenomenological prediction of the properties of the B_{C} system
• Measurements of $B_c^{+}$ production and mass with the $B_c^{+}\to J/\psi {\pi }^{+}$ decay
• Mesons with Beauty and Charm: New Horizons in Spectroscopy
• Measurement of the B_c Meson Lifetime Using B_c ->J/Psi e nu
• Observation of an excited $B_c^{+}$ state
• Measurement of the lifetime of the B_c meson in the semileptonic decay channel
• The excited bottom-charmed mesons in a nonrelativistic quark model
• The decays $B_c\to J/\psi +\bar{\ell }{\nu }_{\ell }$ and $B_c\to J/\psi +\pi (K)$ in covariant confined quark model
• Polarization effects in the cascade decay Lambda_b -> Lambda(-> p pi-) + J/psi(-> l+ l-) in the covariant confined quark model
• Masses and magnetic moments of hadrons with one and two open heavy quarks: heavy baryons and tetraquarks
• Charmed and $\varphi$ meson decay constants from 2+1-flavor lattice QCD
• Nonleptonic two-body weak decays of ${\Lambda }_b$ in modified MIT bag model
• Properties of excited charmed-bottom mesons
• The radiative decays $B_c^{\ast \pm }\to B_c^{\pm }\gamma$ with QCD sum rules
• Magnetic Dipole Transitions of $B_c$ and $B_c^{\ast }$ mesons in the Relativistic Independent Quark Model
• Precision measurement of the $B_c^{+}$ meson mass
• Time-reversal asymmetries and angular distributions in ${\Lambda }_b\to \Lambda V$
• Finding $B_c(3S)$ States via Their Strong Decays
• Sizable Time-reversal violating effects in bottom baryon decays
• $B_c\to J/\psi$ helicity form factors and the $B_c^{+}\to J/\psi +(P,V,{\ell }^{+}{\nu }_{\ell })$ decays
• Possibility of searching for $B_c^{\ast }$ $\to$ $B_{u,d,s}V$, $B_{u,d,s}P$ decays

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• Weak nonleptonic decays of vector B-mesons
• In-medium mass shift of two-flavored heavy mesons, $B_c$, $B_c^{\ast }$, $B_s$, $B_s^{\ast }$, $D_s$ and $D_s^{\ast }$
• Center of mass motion in bag model
• Bottomed baryon decays with invisible Majorana fermions
• Possibility of experimental study on nonleptonic $B_c^{\ast }$ weak decays