More Like this

1. Hard-photon-triggered jets in $p\text{−}p$ and $A\text{−}A$ collisions

   https://doi.org/10.1103/yyr5-zp16  

   Sirimanna, C; Tachibana, Y; Majumder, A; Angerami, A; Arora, R; Bass, S A; Chen, Y; Datta, R; Du, L; Ehlers, R; et al (June 2025, Physical Review C)

   An investigation of high-transverse-momentum (high- $p_T$) photon-triggered jets in proton-proton ( $p\text{−}p$) and ion-ion ( $A\text{−}A$) collisions at $\sqrt{s_{NN}}=0.2$and $5.02\mathrm{TeV}$is carried out, using the multistage description of in-medium jet evolution. Monte Carlo simulations of hard scattering and energy loss in heavy-ion collisions are performed using parameters tuned in a previous study of the nuclear modification factor ( $R_{AA}$) for inclusive jets and high- $p_T$hadrons. We obtain a good reproduction of the experimental data for photon-triggered jet $R_{AA}$, as measured by the ATLAS detector, the distribution of the ratio of jet to photon $p_T$( $X_{J\gamma }$), measured by both CMS and ATLAS, and the photon-jet azimuthal correlation as measured by CMS. We obtain a moderate description of the photon-triggered jet $I_{AA}$, as measured by STAR. A noticeable improvement in the comparison is observed when one goes beyond prompt photons and includes bremsstrahlung and decay photons, revealing their significance in certain kinematic regions, particularly at $X_{J\gamma }>1$. Moreover, azimuthal angle correlations demonstrate a notable impact of bremsstrahlung photons on the distribution, emphasizing their role in accurately describing experimental results. This work highlights the success of the multistage model of jet modification to straightforwardly predict (this set of) photon-triggered jet observables. This comparison, along with the role played by bremsstrahlung photons, has important consequences on the inclusion of such observables in a future Bayesian analysis. Published by the American Physical Society2025 

   more » « less
2. Imaging Optical Frequencies with $100\mu \mathrm{Hz}$ Precision and $1.1\mu \mathrm{m}$ Resolution

   https://doi.org/10.1103/PhysRevLett.120.103201  

   Marti, G. Edward; Hutson, Ross B.; Goban, Akihisa; Campbell, Sara L.; Poli, Nicola; Ye, Jun (March 2018, Physical Review Letters)
3. Nonlinear Arrhenius behavior of self-diffusion in $\beta \text{−}\mathrm{Ti}$ and $\mathrm{Mo}$

   https://doi.org/10.1103/PhysRevMaterials.6.063402  

   Wang, Yaxian; Chen, Zhangqi; Windl, Wolfgang; Zhao, Ji-Cheng (June 2022, Physical Review Materials)

   While anomalous diffusion coefficients with non-Arrhenius-like temperature dependence are observed in a number of metals, a conclusive comprehensive framework of explanation has not been brought forward to date. Here, we use first-principles calculations based on density functional theory to calculate self-diffusion coefficients in the bcc metals Mo and β-Ti by coupling quasiharmonic transition state theory and large-displacement phonon calculations and show that anharmonicity from thermal expansion is the major reason for the anomalous temperature dependence. We use a modified Debye approach to quantify the thermal expansion over the entire temperature range and introduce a method to relax the vacancy structure in a mechanically unstable crystal such as β-Ti. The effect of thermal expansion is found to be crucial for the nonlinear, non-Arrhenius “anomalous” self-diffusion in both bcc systems, with β-Ti showing a 60% larger relative nonlinearity parameter than Mo. Our results point to temperature dependence in the diffusion prefactor from thermal expansion as the major origin of anomalous self-diffusion. The methodology proposed for β-Ti is general and simple enough to be applicable to other mechanically unstable crystals. 

   more » « less
4. Pairing properties of the $t\text{−}{t}^{\prime }\text{−}{t}^{″}\text{−}J$ model

   https://doi.org/10.1103/PhysRevB.106.174507  

   Jiang, Shengtao; Scalapino, Douglas J.; White, Steven R. (November 2022, Physical Review B)
5. Measurement of $\varphi$ -meson production at forward rapidity in $p+p$ collisions at $\sqrt{s}=510\mathrm{GeV}$ and its energy dependence from $\sqrt{s}=200\mathrm{GeV}$ to 7 TeV

   https://doi.org/10.1103/PhysRevD.98.092006  

   Adare, A.; Aidala, C.; Ajitanand, N. N.; Akiba, Y.; Akimoto, R.; Alfred, M.; Apadula, N.; Aramaki, Y.; Asano, H.; Atomssa, E. T.; et al (November 2018, Physical Review D)