Article
Astronomy & Astrophysics
Gi-Chol Cho, Kana Hayami, Nobuchika Okada
Summary: This paper considers an ultraviolet completion of the minimal dark matter (MDM) scenario to an SO(10) grand unified theory and investigates the minimal particle content of the MDM scenario. The study finds a way to embed the minimal particle content into SO(10) representations and identifies the stability of the dark matter particle.
Article
Astronomy & Astrophysics
Andreas Crivellin, Claudio Andrea Manzari, Bruce Mellado, Salah-Eddine Dahbi
Summary: ATLAS observed a weaker-than-expected cross section for dijet resonances with a mass slightly below 1 TeV. CMS reported hints for non-resonant pair production of dijet resonances with a particle Y at a similar mass range. By reinterpreting CMS analysis using the ATLAS preferred mass range, a resonant search was conducted, finding excesses for a mass of Y around 3.6 TeV.
Article
Astronomy & Astrophysics
Tolga Altinoluk, Guillaume Beuf, Alina Czajka, Arantxa Tymowska
Summary: In this study, we calculate dijet production in deep inelastic scattering at low x using the dipole formalism at next-to-eikonal accuracy. We consider the contributions induced by single photon exchange of longitudinal or transverse polarization. Various corrections to the eikonal approximation in the gluon background field are included, such as the finite longitudinal width of the target, interaction with the subleading component of the background field, and the dynamics of the target encoded in the z-coordinate dependence of the background field. The final expressions for the dijet cross section consist of a generalized eikonal contribution and explicit next-to-eikonal corrections involving decorated dipole and quadrupole operators.
Article
Physics, Particles & Fields
Linda M. Carpenter, Taylor Murphy, Matthew J. Smylie
Summary: The study reinterprets two recent LHC searches, explores the possibility of sgluon contributing to an excess of four-top events, and investigates constraints on these models. The results indicate that the jets + E-T(miss) search exceeds the sensitivity of the four-top cross section measurement for sgluons.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
A. van Hameren, H. Kakkad, P. Kotko, K. Kutak, S. Sapeta
Summary: This article reviews recent results of forward jets at the LHC and EIC obtained through small-x Improved Transverse Momentum Dependent factorization (ITMD). In addition to providing an elementary overview of various approaches to perturbative QCD at high energy, including High Energy Factorization, Color Glass Condensate, and ITMD, the Monte Carlo implementation is described and the existing and unpublished phenomenological results for forward dijets are discussed.
EUROPEAN PHYSICAL JOURNAL C
(2023)
Article
Physics, Particles & Fields
Linda M. Carpenter, Matthew J. Smylie
Summary: We investigate the phenomenology of scalar fields in the weak and Higgs sectors of minimal R-symmetric models. We focus on the 'swino' and 'sbino', scalar partners to chiral fields that couple with electroweak gauge bosons in Dirac gaugino models. These fields exist in adjoint representations of SU(2) and U(1) and have both CP-even and CP-odd components. We summarize the interactions and compute the decay widths of these new states to one loop order. Additionally, we explore their contributions to the mass spectrum of MSSM sfermions and study their production cross sections and decay signatures in colliders. Our findings indicate that a large parameter space remains unconstrained by current collider data.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Astronomy & Astrophysics
Dibyendu Bala, Saumen Datta
Summary: The study investigates the interaction between a heavy quark-antiquark pair in color octet configuration in gluon plasma, calculating the effective thermal potential for hybrid states. Results for two different gluonic sources show identical thermal potentials at large distances, and are interpreted as the interaction potential between the static Q and the (Q) overbar in a color octet configuration.
Article
Materials Science, Multidisciplinary
Yating Wen, Shengbing Xiao, Haichao Liu, Xuzhou Tian, Jianbo De, Tong Lu, Zhiqiang Yang, Deyue Zou, Ying Lv, Shi-Tong Zhang, Qing Su, Bing Yang
Summary: A new pure organic donor-acceptor molecule was designed and synthesized, demonstrating different luminescence characteristics in two crystal structures. The switchable luminescence between near ultraviolet delayed fluorescence and yellow room-temperature phosphorescence originates from a single-molecule conformational change involving the twist angle between donor and acceptor units. This work not only provides a new donor-acceptor architecture for pure organic multifunctional materials, but also suggests a novel strategy to design stimuli-responsive materials with unique luminescence switching by tuning the triplet state energy.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Materials Science, Multidisciplinary
Jianwei Liu, Zhimin Ma, Zewei Li, Yan Liu, Xiaohua Fu, Hong Jiang, Zhiyong Ma, Xinru Jia
Summary: By manipulating multi-mode triplet emissions from a single purely organic phosphorescence molecule, room-temperature persistent white afterglow and green afterglow were successfully achieved. The two organic isomers exhibit different emission components leading to distinct afterglow colors.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Optics
E. Nichelatti, M. Piccinini, M. Pimpinella, V De Coste, R. M. Montereali
Summary: Lithium fluoride crystals were irradiated at three different clinical doses to create optically-active point defects, which were then analyzed to identify a new defect and estimate its energy level parameters.
JOURNAL OF LUMINESCENCE
(2022)
Article
Astronomy & Astrophysics
Jun-Kang He, Chao-Jie Fan
Summary: The decay of the P-wave charmonium h(c) -> gamma eta(η'()) is revisited with relativistic corrections, showing significant contributions from both quark-antiquark and gluonic content of eta(η'()). The predicted branching ratios are sensitive to eta-eta' mixing angle, leading to discrepancies between theoretical predictions and experimental measurements.
Article
Astronomy & Astrophysics
Ulrich Sauerwein, Matthias F. M. Lutz, Rob G. E. Timmermans
Summary: In this study, axial-vector form factors of the baryon octet are considered within the framework of flavor-SU(3) chiral perturbation theory. The baryon octet and decuplet, as well as the pseudoscalar-meson octet, are explicitly included. The use of on-shell meson and baryon masses in the one-loop contributions to the axial-vector form factors and their consistent treatment in terms of chiral power counting are explored. The convergence properties of this approach are examined, and the potential for comparison to upcoming QCD lattice data is discussed.
Article
Physics, Multidisciplinary
Sophie Klett, Manfred Lindner, Andreas Trautner
Summary: Basically, we show that vector-like quarks in QCD can generate the electro-weak scale through chiral symmetry breaking condensates in a viable way. The scales generated in this manner are determined by solving the Dyson-Schwinger equation numerically, and they can be sizable as they increase with the hard vector-like mass. By transferring such a scale to the Standard Model via a conformally invariant scalar sector, the electro-weak scale can be dynamically generated without a naturalness problem since all non-dynamical mass scales are protected by chiral symmetry. We present a minimal setup involving a new neutral scalar with mass close to the electro-weak scale and vector-like quarks at the (multi-)TeV scale, both of which are consistent with current bounds and attractive for future experimental searches at the LHC and future colliders. Depending on the hypercharge of the vector-like quarks, hadrons made of them could be interesting Dark Matter candidates.
Article
Materials Science, Multidisciplinary
Masaaki Mitsui, Daichi Arima, Yuki Kobayashi, Eunji Lee, Yoshiki Niihori
Summary: Metal nanoclusters (NCs) with alloyed metal cores have been shown to enhance the photoluminescence (PL) properties, and AgxAu25-x biicosahedral NCs have attracted significant attention due to their improved PL quantum yield. Spectroscopic investigations reveal that the PL of AgxAu25-x is phosphorescent and both Ag13Au12 and Ag12Au13 NCs contribute to the emission. The blue shift of the triplet states caused by replacing the central vertex atom with an Ag atom suppresses T-1-S-0 intersystem crossing and enhances phosphorescence emission. Additionally, the phosphorescence transition dipole moment of Ag13Au12 exists in the long axis direction of the biicosahedron. Furthermore, AgxAu25-x NCs can sensitize molecular triplets and efficiently induce red-to-blue photon upconversion via triplet-triplet annihilation.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Astronomy & Astrophysics
Bastian Diaz Saez, Karim Ghorbani
Summary: In this study, a simple model with two singlet scalar dark matter candidates and a vector-like lepton was explored. The model can accommodate the correct dark matter relic abundance and the (g - 2)(mu) anomaly by having the masses of the three new fields around 100 GeV and the values of the minimum required couplings being order one, while evading collider and dark matter constraints.
