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2025-12-16
04:05
Constraints on light QCD and CP-violating axions from the death line of rotation-powered pulsars / Witte, Samuel J. (U. Oxford (main) ; DESY ; U. Hamburg (main)) ; Caputo, Andrea (CERN ; U. Rome La Sapienza (main) ; Weizmann Inst.) ; Stelzl, Stefan (Ecole Polytechnique, Lausanne ; Barcelona, IFAE) ; Chernoglazov, Alexander (Princeton, Inst. Advanced Study) ; Philippov, Alexander A. (Maryland U.) ; Rajendran, Surjeet (Johns Hopkins U.)
For axions that couple to nucleons, the presence of dense nuclear matter can displace the axion from its vacuum minimum, sourcing large field gradients around neutron stars (and, more generally, compact objects). [...]
DESY-25-111 ; CERN-TH-2025-251 ; arXiv:2512.11023. - 60.
Fulltext

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2025-12-15
16:44
Mechanical Design and Integration of the CMS Phase-2 Tracker / Rose, Pierre (CERN) /CMS Collaboration
The mechanical design of the CMS Phase-2 Tracker addresses the stringent requirements imposed by the High Luminosity LHC environment, including stability under high radiation and thermal loads, a minimal material budget, and precise alignment across large detector volumes. This article describes the engineering challenges and the mechanical solutions implemented in both the Inner Tracker and the Outer Tracker. [...]
CMS-CR-2025-294.- Geneva : CERN, 2025 - 9 p. Fulltext: PDF;
In : 33rd International Workshop on Vertex Detectors (VERTEX 2025), Knoxville, Tennessee, United States, 25 - 29 Aug 2025

Notice détaillée
2025-12-13
04:37
Modeling Light Signals Using Data from the First Pulsed Neutron Source Program at the DUNE Vertical Drift ColdBox Test Facility at CERN Neutrino Platform / Paudel, A. (Fermilab) ; Shi, W. (SUNY, Stony Brook) ; Sala, P. (Fermilab) ; Cavanna, F. (Fermilab) ; Johnson, W. (South Dakota Sch. Mines Tech.) ; Wang, J. (South Dakota Sch. Mines Tech.) ; Ketchum, W. (Fermilab) ; Resnati, F. (CERN) ; Heindel, A. (SUNY, Stony Brook) ; Ashkenazi, A. (Tel Aviv U.) et al.
In this paper, we present a first quantitative test of detected light signals produced in a pulsed neutron source run in a small vertical drift LArTPC at the CERN neutrino platform ColdBox test facility. [...]
arXiv:2512.10790 ; FERMILAB-PUB-25-0856-LBNF. - 16.
Fermilab Library Server - Fulltext - Fulltext

Notice détaillée
2025-12-13
04:34
Hiding a Light Vector Boson from Terrestrial Experiments: A Chargephobic Dark Photon / Esseili, Haidar (Oregon U.) ; Kribs, Graham D. (Oregon U. ; CERN)
We calculate the terrestrial, astrophysical and cosmological constraints on a light vector boson that couples to an arbitrary combination of the electromagnetic and $B-L$ currents of the Standard Model. [...]
CERN-TH-2025-242 ; arXiv:2512.10916. - 54.
Fulltext

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2025-12-13
04:12
Conformal collider bootstrap in ${\mathcal N}=4$ SYM / Dempsey, Ross (MIT) ; Karlsson, Robin (Oxford U., Inst. Math.) ; Pufu, Silviu S. (Princeton U. (main)) ; Zahraee, Zahra (Perimeter Inst. Theor. Phys.) ; Zhiboedov, Alexander (CERN)
We use a combination of perturbation theory, holography, supersymmetric localization, integrability, and numerical conformal bootstrap methods to constrain the energy-energy correlator in $\text{SU}(N_c)$${\mathcal N}=4$ SYM at finite coupling. [...]
CERN-TH-2025-212 ; MIT-CTP/5979 ; PUPT-2659 ; arXiv:2512.10796. - 97.
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2025-12-13
04:04
Nonlocal form factor of chromomagnetic penguin in $B\to K\ell^+\ell^-$ from QCD light-cone sum rules / Hurth, T. (U. Mainz, PRISMA) ; Khodjamirian, A. (Siegen U.) ; Mahmoudi, F. (IP2I, Lyon ; CERN ; IUF, Paris) ; Mishra, D. (IP2I, Lyon) ; Monceaux, Y. (IP2I, Lyon) ; Neshatpour, S. (IP2I, Lyon)
The branching fraction of the $B \to K\ell^+\ell^-$ decay has been measured recently by the LHC experiments, showing a deviation from theory predictions based on the Standard Model (SM). [...]
CERN-TH-2025-253 ; MITP-25-076 ; SI-HEP-2025-28 ; P3H-25-109 ; arXiv:2512.10868. - 36.
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2025-12-12
14:10
Measurement of the top-quark production cross-section and charge asymmetry at LHCb / LHCb Collaboration
The first measurements of the top- and antitop-quark differential production cross-sections and the top-quark charge asymmetry in the forward region are presented, using proton-proton collision data collected by the LHCb experiment at a centre-of-mass energy of 13 TeV corresponding to an integrated luminosity of 5.4 $fb^{-1}$. [...]
arXiv:2512.11324 ; LHCb-PAPER-2025-057 ; CERN-EP-2025-274 ; LHCB-PAPER-2025-057. - 2025 - 25 p, 25.
Fulltext - Related data file(s) - Full text - Fulltext

Notice détaillée
2025-12-12
04:05
Performance of the High-Angle Time Projection Chambers in the Upgraded T2K Off-Axis Near Detector / Aivazelis, K. (IRFU, Saclay) ; Attié, D. (IRFU, Saclay) ; Billoir, P. (Paris U., VI-VII) ; Blanchet, A. (Paris U., VI-VII) ; Bortolato, G. (INFN, Padua ; Padua U.) ; Bolognesi, S. (IRFU, Saclay) ; Boullon, R. (IRFU, Saclay) ; Calabria, N.F. (Bari Polytechnic ; INFN, Bari) ; Calvet, D. (IRFU, Saclay) ; Casado, M.P. (Barcelona, IFAE) et al.
The off-axis magnetic near detector of the T2K experiment has undergone a significant upgrade, including the construction and installation of two new Time Projection Chambers featuring innovative resistive Micromegas technology and a field cage composed of thin composite walls. [...]
arXiv:2511.18650. - 49.
Fulltext

Notice détaillée
2025-12-12
04:05
Beam-test evaluation of pre-production Low Gain Avalanche Detectors for the ATLAS High Granularity Timing Detector / Aboulhorma, A. (Rabat U.) ; Ait Tamlihat, M. (Rabat U.) ; Alfanda, H.M. (Shanghai Jiao Tong U. ; Shanghai Jiaotong U. ; KLPAC, Shanghai) ; Atanova, O. (Unlisted) ; Atanov, N. (Unlisted) ; Azzouzi, I. (Mohammed V U., Agdal) ; da Costa, J. Barreiro Guimarães (Beijing, Inst. High Energy Phys.) ; Beau, T. (LPNHE, Paris) ; Benchekroun, D. (Hassan U., II, Ain Chock) ; Bendebba, F. (Hassan U., II, Ain Chock) et al.
The High Granularity Timing Detector (HGTD) will be installed in the ATLAS experiment as part of the Phase-II upgrade for the High Luminosity-Large Hadron Collider (HL-LHC). [...]
arXiv:2512.01855. - 24.
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Notice détaillée
2025-12-12
04:05
CMS Results at the t$\bar{\text{t}}$ threshold / Bach, Jörn (DESY)
Recent results of CMS at the top-antitop quark pair production threshold in the dileptonic and semileptonic decay channels are presented. [...]
arXiv:2512.09501 ; CMS CR-2025/162. - 7.
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