María Pérez Martínez
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
María Pérez Martínez has a total of 10 co-authors. Here are the top co-authors by number of shared publications:
- Brenda Aurea Cervantes Vergara
Fermi National Accelerator Laboratory
1 shared publication - Dario Rodrigues
Universidad de Buenos Aires
1 shared publication Javier Tiffenberg
Fermi National Accelerator Laboratory
1 shared publicationJuan Estrada
Fermi National Accelerator Laboratory
1 shared publication- Marcos Fernandez
Instituto de Física de Cantabria (IFCA), CSIC-Universidad de Cantabria
1 shared publication - Nicola Bacchetta
INFN Sezione di Padova
1 shared publication
Latest Publications
- Open Access
- 10 February 2026
- Published by American Physical Society (APS) in Physical Review D
- Vol. 113 (3)
Investigation of low-energy particle remnants in high-energy collisions at the LHC with a skipper-CCD detector
We deployed the Mobile Skipper Testing Apparatus ∼ 33 m away from the Compact Muon Solenoid collision point, the first skipper-CCD detector probing low-energy particles produced in high-energy collisions at the Large Hadron Collider. In this work, we search for beam-related events using data collected in 2024 during beam-on and beam-off periods. The dataset corresponds to integrated luminosities of 113.3 fb − 1 and 1.54 nb − 1 for the proton-proton and Pb-Pb collision periods, respectively. We report observed event rates in a model-independent framework across two ionization regions: ≤ 20 e − and > 20 e − . For the low-energy region, we perform a likelihood analysis to test the null hypothesis of no beam-correlated signal. We found no significant correlation during proton-proton and Pb-Pb collisions. For the high-energy region, we present the energy spectra for both collision periods and compare event rates for images with and without luminosity. We observe a slight increase in the event rate following the Pb-Pb collisions, coinciding with a rise in the single-electron rate, which will be investigated in future work. Using the low-energy proton-proton results, we place 95% confidence level constraints on the mass-millicharge parameter space of millicharged particles. Overall, the results in this work demonstrate the viability of skipper-CCD technology to explore new physics at high-energy colliders and motivate future searches with more massive detectors.
- 10 February 2026
- Published by American Physical Society (APS) in Physical Review D
- Vol. 113 (3)
Open AccessInvestigation of low-energy particle remnants in high-energy collisions at the LHC with a skipper-CCD detector
We deployed the Mobile Skipper Testing Apparatus ∼ 33 m away from the Compact Muon Solenoid collision point, the first skipper-CCD detector probing low-energy particles produced in high-energy collisions at the Large Hadron Collider. In this work, we search for beam-related events using data collected in 2024 during beam-on and beam-off periods. The dataset corresponds to integrated luminosities of 113.3 fb − 1 and 1.54 nb − 1 for the proton-proton and Pb-Pb collision periods, respectively. We report observed event rates in a model-independent framework across two ionization regions: ≤ 20 e − and > 20 e − . For the low-energy region, we perform a likelihood analysis to test the null hypothesis of no beam-correlated signal. We found no significant correlation during proton-proton and Pb-Pb collisions. For the high-energy region, we present the energy spectra for both collision periods and compare event rates for images with and without luminosity. We observe a slight increase in the event rate following the Pb-Pb collisions, coinciding with a rise in the single-electron rate, which will be investigated in future work. Using the low-energy proton-proton results, we place 95% confidence level constraints on the mass-millicharge parameter space of millicharged particles. Overall, the results in this work demonstrate the viability of skipper-CCD technology to explore new physics at high-energy colliders and motivate future searches with more massive detectors.