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1. Study of the doubly charmed tetraquark $${{{{{{\rm{T}}}}}}}_{{{{{{\rm{c}}}}}}{{{{{\rm{c}}}}}}}^{+}$$

   https://doi.org/10.1038/s41467-022-30206-w  

   Aaij, R.; Abdelmotteleb, A. S.; Beteta, C. Abellán; Gallego, F. J.; Ackernley, T.; Adeva, B.; Adinolfi, M.; Afsharnia, H.; Agapopoulou, C.; Aidala, C. A.; et al (December 2022, Nature Communications)

   Abstract Quantum chromodynamics, the theory of the strong force, describes interactions of coloured quarks and gluons and the formation of hadronic matter. Conventional hadronic matter consists of baryons and mesons made of three quarks and quark-antiquark pairs, respectively. Particles with an alternative quark content are known as exotic states. Here a study is reported of an exotic narrow state in the D 0 D 0 π + mass spectrum just below the D *+ D 0 mass threshold produced in proton-proton collisions collected with the LHCb detector at the Large Hadron Collider. The state is consistent with the ground isoscalar $${{{{{{\rm{T}}}}}}}_{{{{{{\rm{c}}}}}}{{{{{\rm{c}}}}}}}^{+}$$ T c c + tetraquark with a quark content of $${{{{{\rm{c}}}}}}{{{{{\rm{c}}}}}}\overline{{{{{{\rm{u}}}}}}}\overline{{{{{{\rm{d}}}}}}}$$ c c u ¯ d ¯ and spin-parity quantum numbers J P  = 1 + . Study of the DD mass spectra disfavours interpretation of the resonance as the isovector state. The decay structure via intermediate off-shell D *+ mesons is consistent with the observed D 0 π + mass distribution. To analyse the mass of the resonance and its coupling to the D * D system, a dedicated model is developed under the assumption of an isoscalar axial-vector $${{{{{{\rm{T}}}}}}}_{{{{{{\rm{c}}}}}}{{{{{\rm{c}}}}}}}^{+}$$ T c c + state decaying to the D * D channel. Using this model, resonance parameters including the pole position, scattering length, effective range and compositeness are determined to reveal important information about the nature of the $${{{{{{\rm{T}}}}}}}_{{{{{{\rm{c}}}}}}{{{{{\rm{c}}}}}}}^{+}$$ T c c + state. In addition, an unexpected dependence of the production rate on track multiplicity is observed. 

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2. SÍGAME Simulations of the $$[{\rm{C}}\,{\rm{II}}]$$, $$[{\rm{O}}\,{\rm{I}}]$$, and $$[{\rm{O}}\,{\rm{III}}]$$ Line Emission from Star-forming Galaxies at $$z\simeq 6$$

   https://doi.org/10.3847/1538-4357/aa86b4  

   Olsen, Karen; Greve, Thomas R.; Narayanan, Desika; Thompson, Robert; Davé, Romeel; Rios, Luis Niebla; Stawinski, Stephanie (September 2017, The Astrophysical Journal)
3. Resolving the $$R_{\rm pA}$$ and $$v_2$$ puzzle of $D^0$ mesons in $p-$Pb collisions

   https://doi.org/10.22323/1.438.0090  

   Zhang, Chao; Lin, Zi-Wei; Zheng, Liang; Shi, Shusu (February 2024, Sissa Medialab)
4. Kinematic Links and the Coevolution of MHD Winds, Jets, and Inner Disks from a High-resolution Optical [$${\rm{O}}\,{\rm{I}}$$] Survey

   https://doi.org/10.3847/1538-4357/aaf1aa  

   Banzatti, Andrea; Pascucci, Ilaria; Edwards, Suzan; Fang, Min; Gorti, Uma; Flock, Mario (January 2019, The Astrophysical Journal)
5. Real Slices of $${\rm SL}(r,\mathbb{C})$$-Opers

   https://doi.org/10.3842/SIGMA.2023.067  

   Biswas, Indranil; Heller, Sebastian; Schaposnik, Laura P. (September 2023, Symmetry, Integrability and Geometry: Methods and Applications)

   Through the action of an anti-holomorphic involution $$\sigma$$ (a real structure) on a Riemann surface $$X$$, we consider the induced actions on $${\rm SL}(r,\mathbb{C})$$-opers and study the real slices fixed by such actions. By constructing this involution for different descriptions of the space of $${\rm SL}(r,\mathbb{C})$$-opers, we are able to give a natural parametrization of the fixed point locus via differentials on the Riemann surface, which in turn allows us to study their geometric properties. 

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