Publications (36)
The DAMIC-M Low Background Chamber
I. Arnquist, N. Avalos, P. Bailly +66
The DArk Matter In CCDs at Modane (DAMIC-M) experiment is designed to search for light dark matter (m<10\,GeV/c) at the Laboratoire Souterrain de Modane (LSM) in France. D…
First Constraints from DAMIC-M on Sub-GeV Dark-Matter Particles Interacting with Electrons
I. Arnquist, N. Avalos, D. Baxter +42
We report constraints on sub-GeV dark matter particles interacting with electrons from the first underground operation of DAMIC-M detectors. The search is performed with an integra…
CMS Barrel Pixel Detector Overview
H. Chr. Kästli, W. Bertl, W. Erdmann +9
The pixel detector is the innermost tracking device of the CMS experiment at the LHC. It is built from two independent sub devices, the pixel barrel and the end disks. The barrel c…
Research Proposal for an Experiment to Search for the Decay μ -> eee
A. Blondel, A. Bravar, M. Pohl +22
We propose an experiment (Mu3e) to search for the lepton flavour violating decay mu+ -> e+e-e+. We aim for an ultimate sensitivity of one in 10^16 mu-decays, four orders of magnitu…
Test Beam Performance Measurements for the Phase I Upgrade of the CMS Pixel Detector
M. Dragicevic, M. Friedl, J. Hrubec +481
A new pixel detector for the CMS experiment was built in order to cope with the instantaneous luminosities anticipated for the Phase~I Upgrade of the LHC. The new CMS pixel detecto…
PEN: a low energy test of lepton universality
D. Pocanic, L. P. Alonzi, V. A. Baranov +24
Allowed charged meson decays are characterized by simple dynamics, few available decay channels, mainly into leptons, and extremely well controlled radiative and loop correcti…
Precision measurement of Compton scattering in silicon with a skipper CCD for dark matter detection
D. Norcini, N. Castello-Mor, D. Baxter +41
Experiments aiming to directly detect dark matter through particle recoils can achieve energy thresholds of . In this regime, ionization signals from s…
PEN experiment: a precise measurement of the pi+ -> e+ nu decay branching fraction
PEN Collaboration, D. Pocanic, L. P. Alonzi +26
A new measurement of , the decay branching ratio, is currently under way at the Paul Scherrer Institute. The present experimental result on $B_{Ïe2}…
New studies of allowed pion and muon decays
D. Pocanic, A. Palladino, L. P. Alonzi +27
Building on the rare pion and muon decay results of the PIBETA experiment, the PEN collaboration has undertaken a precise measurement of B_{Ïe2} = R^Ï_{e/μ}, the Ï^+ -> e^+ν(Î…
Trapping in irradiated p-on-n silicon sensors at fluences anticipated at the HL-LHC outer tracker
W. Adam, T. Bergauer, M. Dragicevic +682
The degradation of signal in silicon sensors is studied under conditions expected at the CERN High-Luminosity LHC. 200 m thick n-type silicon sensors are irradiated with proton…
Search for Daily Modulation of MeV Dark Matter Signals with DAMIC-M
I. Arnquist, N. Avalos, D. Baxter +37
Dark Matter (DM) particles with sufficiently large cross sections may scatter as they travel through Earth's bulk. The corresponding changes in the DM flux give rise to a character…
Measurement of lepton-jet correlation in deep-inelastic scattering with the H1 detector using machine learning for unfolding
H1 Collaboration, V. Andreev, M. Arratia +142
The first measurement of lepton-jet momentum imbalance and azimuthal correlation in lepton-proton scattering at high momentum transfer is presented. These data, taken with the H1 d…
Observation of the rare decay from the combined analysis of CMS and LHCb data
The CMS, LHCb Collaborations, : +2807
A joint measurement is presented of the branching fractions and in proton-proton collisions at the LHC by the CMS and LHCb experiments. The data…
An Improved Limit on the Rate Of Decay K+ -> pi+ mu+ e-
R. Appel, G. S. Atoyan, B. Bassalleck +33
The experiment E865 at BNL places an upper limit on the branching ratio for the decay K+ -> pi+ mu+ e- of 3.9x10^-11 (90% C.L.). Along with with other results this yields a combine…
Measurement of the 1-jettiness event shape observable in deep-inelastic electron-proton scattering at HERA
The H1 collaboration, V. Andreev, M. Arratia +146
The H1 Collaboration reports the first measurement of the 1-jettiness event shape observable in neutral-current deep-inelastic electron-proton scattering (DIS). The observ…
Impact of jet-production data on the next-to-next-to-leading-order determination of HERAPDF2.0 parton distributions
H1, ZEUS Collaborations, : +234
The HERAPDF2.0 ensemble of parton distribution functions (PDFs) was introduced in 2015. The final stage is presented, a next-to-next-to-leading-order (NNLO) analysis of the HERA da…
Daily Modulation Constraints on Light Dark Matter with DAMIC-M
K. Aggarwal, I. Arnquist, N. Avalos +40
The flux of Hidden Sector particles from the Galactic halo reaching an underground detector can be significantly attenuated by interactions within the Earth for sufficiently large…
Observation and differential cross section measurement of neutral current DIS events with an empty hemisphere in the Breit frame
The H1 collaboration, V. Andreev, M. Arratia +146
The Breit frame provides a natural frame to analyze lepton-proton scattering events. In this reference frame, the parton model hard interactions between a quark and an exchanged bo…
Unbinned Deep Learning Jet Substructure Measurement in High ep collisions at HERA
The H1 collaboration, V. Andreev, M. Arratia +142
The radiation pattern within high energy quark- and gluon-initiated jets (jet substructure) is used extensively as a precision probe of the strong force as well as an environment f…
A Vertex Trigger based on Cylindrical Multiwire Proportional Chambers
J. Becker, K. Bösiger, L. Lindfeld +14
The article describes the technical implementation and the performance of the z-vertex trigger (CIP2k), which is part of the H1-experiment at HERA.
PEN: a sensitive search for non-(V-A) weak processes
PEN Collaboration, D. Pocanic, L. P. Alonzi +26
A new measurement of , the decay branching ratio, is currently under way at the Paul Scherrer Institute. The present experimental result on $B_{Ïe2}…
Measurement of groomed event shape observables in deep-inelastic electron-proton scattering at HERA
The H1 collaboration, V. Andreev, M. Arratia +145
The H1 Collaboration at HERA reports the first measurement of groomed event shape observables in deep inelastic electron-proton scattering (DIS) at GeV, using data r…
Probing Benchmark Models of Hidden-Sector Dark Matter with DAMIC-M
M Collaboration, K. Aggarwal, I. Arnquist +39
We report on a search for sub-GeV dark matter (DM) particles interacting with electrons using the DAMIC-M prototype detector at the Modane Underground Laboratory. The data feature…
Machine Learning-Assisted Measurement of Lepton-Jet Azimuthal Angular Asymmetries in Deep-Inelastic Scattering at HERA
The H1 collaboration, V. Andreev, M. Arratia +141
In deep-inelastic positron-proton scattering, the lepton-jet azimuthal angular asymmetry is measured using data collected with the H1 detector at HERA. When the average transverse…
Studies of aging and HV break down problems during development and operation of MSGC and GEM detectors for the Inner Tracking System of HERA-B
B Inner Tracker Collaboration, Y. Bagaturia, O. Baruth +24
The results of five years of development of the inner tracking system of the HERA-B experiment and first experience from the data taking period of the year 2000 are reported. The s…
New Precise Measurement of the Pion Weak Form Factors in the Pi+ -> e+ nu gamma Decay
M. Bychkov, D. PoÄaniÄ, B. A. VanDevender +29
We have measured the branching ratio over a wide region of phase space, based on a total of 65,460 events acquired using the PIBETA detector. Minimum-…
Confirmation of the spectral excess in DAMIC at SNOLAB with skipper CCDs
A. Aguilar-Arevalo, I. Arnquist, N. Avalos +69
We present results from a 3.25 kg-day target exposure of two silicon charge-coupled devices (CCDs), each with 24 megapixels and skipper readout, deployed in the DAMIC setup at SNOL…
Precise Measurement of pi+ -> e+ nu Branching Ratio
E. Frlež, L. P. Alonzi, V. A. Baranov +23
The PEN Collaboration is conducting a new measurement of the pi+ -> e+ nu branching ratio at the Paul Scherrer Institute, with the goal uncertainty of delta B/B(pie2)=5E-4 or lower…
Technical design of the phase I Mu3e experiment
K. Arndt, H. Augustin, P. Baesso +102
The Mu3e experiment aims to find or exclude the lepton flavour violating decay at branching fractions above . A first phase of the experiment using an…
PEN experiment: a precise test of lepton universality
C. J. Glaser, D. Pocanic, L. P. Alonzi +26
With few open channels and uncomplicated theoretical description, charged pion decays are uniquely sensitive to certain standard model (SM) symmetries, the universality of weak fer…
Mechanical Design and Material Budget of the CMS Barrel Pixel Detector
C. Amsler, K. Bösiger, V. Chiochia +14
The Compact Muon Solenoid experiment at the Large Hadron Collider at CERN includes a silicon pixel detector as its innermost component. Its main task is the precise reconstruction…
The DAMIC-M Experiment: Status and First Results
I. Arnquist, N. Avalos, P. Bailly +69
The DAMIC-M (DArk Matter In CCDs at Modane) experiment employs thick, fully depleted silicon charged-coupled devices (CCDs) to search for dark matter particles with a target exposu…
Constraints on Sub-MeV Dark Matter from Solar Reflection with DAMIC-M
K. Aggarwal, I. Arnquist, N. Avalos +41
The Sun acts as a natural dark matter accelerator. Galactic halo particles scattering in the solar plasma emerge with velocities well beyond the Galactic escape speed, providing a…
New results in rare allowed muon and pion decays
D. Pocanic, E. Munyangabe, M. Bychkov +25
Simple dynamics, few available decay channels, and highly controlled radiative and loop corrections, make pion and muon decays a sensitive means of exploring details of the underly…
First Production of Skipper-CCD Modules for the DAMIC-M Experiment
H. Lin, M. Traina, S. Paul +65
The DAMIC-M experiment will search for sub-GeV dark matter particles with a large array of silicon skipper charge-coupled devices (CCDs) at the Modane Underground Laboratory (LSM)…
Determination of the strong coupling constant in next-to-next-to-leading order QCD using H1 jet cross section measurements
H1 collaboration, V. Andreev, A. Baghdasaryan +145
The strong coupling constant is determined from inclusive jet and dijet cross sections in neutral-current deep-inelastic scattering (DIS) measured at HERA by the H…