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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. Stingray : A Modern Python Library for Spectral Timing

   https://doi.org/10.3847/1538-4357/ab258d  

   Huppenkothen, Daniela; Bachetti, Matteo; Stevens, Abigail L.; Migliari, Simone; Balm, Paul; Hammad, Omar; Khan, Usman Mahmood; Mishra, Himanshu; Rashid, Haroon; Sharma, Swapnil; et al (August 2019, The Astrophysical Journal)
3. 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)
4. p † q : a tool for prototyping many-body methods for quantum chemistry

   https://doi.org/10.1080/00268976.2021.1954709  

   Rubin, Nicholas C.; DePrince, A. Eugene (November 2021, Molecular Physics)
5. PyQMC : An all-Python real-space quantum Monte Carlo module in PySCF

   https://doi.org/10.1063/5.0139024  

   Wheeler, William A.; Pathak, Shivesh; Kleiner, Kevin G.; Yuan, Shunyue; Rodrigues, João N. B.; Lorsung, Cooper; Krongchon, Kittithat; Chang, Yueqing; Zhou, Yiqing; Busemeyer, Brian; et al (March 2023, The Journal of Chemical Physics)

   We describe a new open-source Python-based package for high accuracy correlated electron calculations using quantum Monte Carlo (QMC) in real space: PyQMC. PyQMC implements modern versions of QMC algorithms in an accessible format, enabling algorithmic development and easy implementation of complex workflows. Tight integration with the PySCF environment allows for a simple comparison between QMC calculations and other many-body wave function techniques, as well as access to high accuracy trial wave functions. 

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