${\Lambda }_c^{+}(2940)$ photoproduction off the neutron

Abstract

By assuming that the ${\Lambda }_c^{\ast }(2940)$ is a $p{D}^{\ast 0}$ molecular state with spin-parity $J^P={\frac{1}{2}}^{+}$ and $J^P={\frac{1}{2}}^{-}$, the photoproduction of charmed ${\Lambda }_c^{\ast }(2940)$ baryon in the $\gamma n\to D^{-}{\Lambda }_c^{\ast }(2940{)}^{+}$ process is investigated with an effective Lagrangian approach. It is found that the contributions from $t$-channel with $D^{\ast }$ exchange are dominant, while the $s$-channel with nucleon pole exchange give a sizeable contribution around the threshold. The contributions from the $u$-channel and contact term are very small. The total cross section of the $\gamma n\to D^{-}{\Lambda }_c^{\ast }(2940{)}^{+}$ reaction is estimated, which indicate it is feasible to searching for the charmed ${\Lambda }_c^{\ast }(2940)$ baryon at the COMPASS experiment.

7 pages, 5 figures

References in corpus (21)

• Big-Bang Nucleosynthesis
• The COMPASS Experiment at CERN
• Heavy Baryons in a Quark Model
• Masses of excited heavy baryons in the relativistic quark-diquark picture
• Strong Decays of Charmed Baryons in Heavy Hadron Chiral Perturbation Theory
• Magnetic moments of heavy baryons in the relativistic three-quark model
• Strong decays of charmed baryons
• The s-wave charmed baryon resonances from a coupled-channel approach with heavy quark symmetry
• Charmed baryon strong decays in a chiral quark model
• ${\Lambda }_c^{+}(2940)$: A Possible Molecular State?
• Radiative decay of Lambdac(2940)+ in a hadronic molecule picture
• Gauge-invariant approach to meson photoproduction including the final-state interaction
• The observed charmed hadron ${\Lambda }_c(2940{)}^{+}$ and the $D^{\ast }N$ interaction
• Role of the ${\Lambda }_c^{+}(2940)$ in the ${\pi }^{-}p\to D^{-}{D}^{0}p$ reaction close to threshold
• Role of the hadron molecule Lambda_c(2940) in the p bar(p) -> p D0 bar(Lambda)_c(2286) annihilation reaction
• Search for exclusive photoproduction of Z${}_c^{\pm }$(3900) at COMPASS
• Production of the superheavy baryon ${\Lambda }_{c\bar{c}}^{\ast }(4209)$ in kaon-induced reaction
• Charmed $(70,1^{-})$ baryon multiplet
• Photoproduction of the charged charmoniumlike $Z_c^{+}(4200)$
• Radiative decays of dynamically generated charmed baryons
• Reexamination of the role of the ${\Delta }^{\ast }$ resonances in the $pp\to n{K}^{+}{\Sigma }^{+}$ reaction

Cited by in corpus (9)

• A review of the open charm and open bottom systems
• Strong decay of ${\Lambda }_c(2940)$ as a $2P$ state in the ${\Lambda }_c$ family
• $D^{(\ast )}N$ interaction and the structure of ${\Sigma }_c(2800)$ and ${\Lambda }_c(2940)$ in chiral effective field theory
• ${\Lambda }_c(2910)$ and ${\Lambda }_c(2940)$ as the conventional baryons dressed with the $D^{\ast }N$ channel
• Production of charmed baryon ${\Lambda }_c(2940)$ by kaon-induced reaction on a proton target
• Photoproduction of $a_2(1320)$ in a Regge model
• The production of neutral $N^{\ast }(11052)$ resonance with hidden beauty from ${\pi }^{-}p$ scattering
• Octet baryon and heavy meson interactions in chiral effective field theory
• Electromagnetic probes revealing the inner structure of the ${\Lambda }_c(2940)$