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Creators/Authors contains: "Duk, V"

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  1. ABSTRACT Over the last 30 years over 30,000 articles and chapters have been published related to mentoring, with over 40% focused on mentoring students in STEM disciplines. What have we learned from this voluminous literature and what concepts stand out as needing further attention? A review of the literature indicates that mentoring of underrepresented minoritized (URM) students involve attention to the professional development of these students, active engagement in research activities, and a willingness and ability to develop a strong relationship that supersedes the aspects of traditional mentoring activities. Psychology graduate programs have long been known to teach and develop the skills necessary to help students foster strong therapeutic relationships. The foundational interpersonal skills taught in domains of psychology (e.g., counseling psychology, social psychology) are directly relevant to other relationship-building scenarios, such as mentor/mentee dyads. Budding psychologists typically learn therapeutic techniques that help build trusting relationships with clients that hold different identities than their own. But these skills apply beyond client/therapist relations and could be used to inform intensive/inclusive mentoring approaches with URM students, especially when the mentor holds a different identity. The training techniques proposed can be adapted for both formal and informal forms of mentoring and may enhance a student’s sense of belonging, which is the strongest predictor of science identity development and success in STEM. This paper will focus on elements necessary to develop a strong relationship between URM students and their mentors based on the development of a therapeutic relationship using concepts from theories related to the Common Factors (Rosenzweig, 1936). These theories posit that the development of a meaningful client/therapist relationship and behavior change requires attention to four common factors: therapist qualities or in this case mentor qualities, change processes or how students are trained, treatment structures which are specific techniques, and development of a strong relationship. These factors can easily be applied to create a truly inclusive mentoring model. 
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  3. Free, publicly-accessible full text available September 1, 2026
  4. A<sc>bstract</sc> Inclusive and differential cross sections for Higgs boson production in proton-proton collisions at a centre-of-mass energy of 13.6 TeV are measured using data collected with the CMS detector at the LHC in 2022, corresponding to an integrated luminosity of 34.7 fb−1. Events with the diphoton final state are selected, and the measured inclusive fiducial cross section is$${\sigma }_{\text{fid}}={74}\pm {11}{\left({\text{stat}}\right)}_{-4}^{+5}\left({\text{syst}}\right)$$fb, in agreement with the standard model prediction of 67.8 ± 3.8 fb. Differential cross sections are measured as functions of several observables: the Higgs boson transverse momentum and rapidity, the number of associated jets, and the transverse momentum of the leading jet in the event. Within the uncertainties, the differential cross sections agree with the standard model predictions. 
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    Free, publicly-accessible full text available September 1, 2026
  5. Incoherent J / ψ photoproduction in heavy ion ultraperipheral collisions (UPCs) provides a sensitive probe of localized, fluctuating gluonic structures within heavy nuclei. This Letter reports the first measurement of the photon-nucleon center-of-mass energy ( W γ N ) dependence of this process in PbPb UPCs at a nucleon-nucleon center-of-mass energy of 5.02 TeV, using 1.52 nb 1 of data recorded by the CMS experiment. The measurement covers a wide W γ N range of 40 400 GeV , probing gluons carrying a fraction x of nucleon momentum down to an unexplored regime of 6.5 × 10 5 . Compared to baseline predictions neglecting nuclear effects, the measured cross sections exhibit significantly greater suppression at lower x . Additionally, the ratio of incoherent to coherent photoproduction is found to be constant across the probed W γ N and x range, disfavoring the establishment of the black disk limit. This Letter provides critical insights into the x -dependent evolution of fluctuating gluonic structures within nuclei and calls for further advancements in theoretical models incorporating nuclear shadowing and gluon saturation. 
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    Free, publicly-accessible full text available September 1, 2026
  6. A<sc>bstract</sc> A search for the production of a single top quark in association with invisible particles is performed using proton-proton collision data collected with the CMS detector at the LHC at$$\sqrt{s}=13$$TeV, corresponding to an integrated luminosity of 138 fb−1. In this search, a flavor-changing neutral current produces a single top quark or antiquark and an invisible state nonresonantly. The invisible state consists of a hypothetical spin-1 particle acting as a new mediator and decaying to two spin-1/2 dark matter candidates. The analysis searches for events in which the top quark or antiquark decays hadronically. No significant excess of events compatible with that signature is observed. Exclusion limits at 95% confidence level are placed on the masses of the spin-1 mediator and the dark matter candidates, and are compared to constraints from the dark matter relic density measurements. In a vector (axial-vector) coupling scenario, masses of the spin-1 mediator are excluded up to 1.85 (1.85) TeV with an expectation of 2.0 (2.0) TeV, whereas masses of the dark matter candidates are excluded up to 0.75 (0.55) TeV with an expectation of 0.85 (0.65) TeV. 
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    Free, publicly-accessible full text available September 1, 2026
  7. The polarization of the Λ and Λ ¯ hyperons along the beam direction has been measured in proton-lead ( p -Pb ) collisions at a center-of-mass energy per nucleon pair of 8.16 TeV. The data were obtained with the CMS detector at the LHC and correspond to an integrated luminosity of 186.0 ± 6.5 nb 1 . A significant azimuthal dependence of the hyperon polarization, characterized by the second-order Fourier sine coefficient P z , s 2 , is observed. The P z , s 2 values decrease as a function of charged particle multiplicity, but increase with transverse momentum. A hydrodynamic model that describes the observed P z , s 2 values in nucleus-nucleus collisions by introducing vorticity effects does not reproduce either the sign or the magnitude of the p -Pb results. These observations pose a challenge to the current theoretical implementation of spin polarization in heavy ion collisions and offer new insights into the origin of spin polarization in hadronic collisions at LHC energies. 
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    Free, publicly-accessible full text available September 1, 2026
  8. A<sc>bstract</sc> A search is performed for dark matter (DM) produced in association with a single top quark or a pair of top quarks using the data collected with the CMS detector at the LHC from proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to 138 fb−1of integrated luminosity. An excess of events with a large imbalance of transverse momentum is searched for across 0, 1 and 2 lepton final states. Novel multivariate techniques are used to take advantage of the differences in kinematic properties between the two DM production mechanisms. No significant deviations with respect to the standard model predictions are observed. The results are interpreted considering a simplified model in which the mediator is either a scalar or pseudoscalar particle and couples to top quarks and to DM fermions. Axion-like particles that are coupled to top quarks and DM fermions are also considered. Expected exclusion limits of 410 and 380 GeV for scalar and pseudoscalar mediator masses, respectively, are set at the 95% confidence level. A DM particle mass of 1 GeV is assumed, with mediator couplings to fermions and DM particles set to unity. A small signal-like excess is observed in data, with the largest local significance observed to be 1.9 standard deviations for the 150 GeV pseudoscalar mediator hypothesis. Because of this excess, mediator masses are only excluded below 310 (320) GeV for the scalar (pseudoscalar) mediator. The results are also translated into model-independent 95% confidence level upper limits on the visible cross section of DM production in association with top quarks, ranging from 1 pb to 0.02 pb. 
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    Free, publicly-accessible full text available August 1, 2026
  9. Bound states of charm and anticharm quarks, known as charmonia, have a rich spectroscopic structure that can be used to probe the dynamics of hadron production in high-energy hadron collisions. Here, the cross section ratio of excited ( ψ ( 2 S ) ) and ground state ( J / ψ ) vector mesons is measured as a function of the charged-particle multiplicity in proton-lead ( p Pb ) collisions at a center-of-mass (CM) energy per nucleon pair of 8.16 TeV. The data corresponding to an integrated luminosity of 175 nb 1 were collected using the CMS detector. The ratio is measured separately for prompt and nonprompt charmonia in the transverse momentum range 6.5 < p T < 30 GeV and in four rapidity ranges spanning 2.865 < y CM < 1.935 . For the first time, a statistically significant multiplicity dependence of the prompt cross section ratio is observed in proton-nucleus collisions. There is no clear rapidity dependence in the ratio. The prompt measurements are compared with a theoretical model which includes interactions with nearby particles during the evolution of the system. These results provide additional constraints on hadronization models of heavy quarks in nuclear collisions. 
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    Free, publicly-accessible full text available August 1, 2026
  10. The first search for a heavy neutral spin-1 gauge boson ( Z ) with nonuniversal fermion couplings produced via vector boson fusion processes and decaying to tau leptons or W bosons is presented. The analysis is performed using LHC data at s = 13 TeV , collected from 2016 to 2018 with the CMS experiment and corresponding to an integrated luminosity of 138 fb 1 . The data are consistent with the standard model predictions. Upper limits are set on the product of the cross section for production of the Z boson and its branching fraction to τ τ or W W . The presence of a Z boson decaying to τ + τ ( W + W ) is excluded for masses up to 2.45(1.60) TeV, depending on the Z boson coupling to standard model weak bosons, and assuming a Z τ + τ ( W + W ) branching fraction of 50%. 
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    Free, publicly-accessible full text available August 1, 2026