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| Author | Andreev, Y.M. et al; Molina Bueno, L.; Tuzi, M. | ||||
| Title | Measurement of the intrinsic hadronic contamination in the NA64-e high-purity e+/e- beam at CERN | Type | Journal Article | ||
| Year | 2023 | Publication | Nuclear Instruments & Methods in Physics Research A | Abbreviated Journal | Nucl. Instrum. Methods Phys. Res. A |
| Volume | 1057 | Issue | Pages | 168776 - 8pp | |
| Keywords | Light dark matter; Missing-energy experiment; H4 beamline; Hadron contamination | ||||
| Abstract | We present the measurement of the intrinsic hadronic contamination at the CERN SPS H4 beamline configured to transport electrons and positrons at 100 GeV/c. The analysis, performed using data collected by the NA64-e experiment in 2022, is based on calorimetric measurements, exploiting the different interaction mechanisms of electrons and hadrons in the NA64 detector. We determined the contamination by comparing the results obtained using the nominal electron/positron beamline configuration with those from a dedicated setup, in which only hadrons impinged on the detector. We also obtained an estimate of the relative protons, antiprotons and pions yield by exploiting the different absorption probabilities of these particles in matter. We cross-checked our results with a dedicated Monte Carlo simulation for the hadron production at the primary T2 target, finding a good agreement with the experimental measurements. | ||||
| Address | [Andreev, Yu. M.; Chumakov, A. G.; Dermenev, A. V.; Donskov, S. V.; Dusaev, R. R.; Enik, T.; Frolov, V. N.; Gerassimov, S. G.; Gninenko, S. N.; Kachanov, V. A.; Kambar, Y.; Karneyeu, A. E.; Kirsanov, M. M.; Kolosov, V. N.; Gertsenberger, S. V.; Kasianova, E. A.; Kramarenko, V. A.; Kravchuk, L. V.; Krasnikov, N. V.; Lyubovitskij, V. E.; Lysan, V.; Matveev, V. A.; Mikhailov, Yu. V.; Bueno, L. Molina; Peshekhonov, D. V.; Polyakov, V. A.; Salamatin, K.; Samoylenko, V. D.; Shchukin, D.; Tikhomirov, V. O.; Tlisova, I.; Toropin, A. N.; Trifonov, A. Yu.; Vasilishin, B. I.; Volkov, P. V.; Volkov, V. Yu.; Voronchikhin, I. V.; Zhevlakov, A. S.] CERN, Geneva, Switzerland, Email: pietro.bisio@ge.infn.it | ||||
| Corporate Author | Thesis | ||||
| Publisher | Elsevier | Place of Publication | Editor | ||
| Language | English | Summary Language | Original Title | ||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0168-9002 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | WOS:001154863600001 | Approved | no | ||
| Is ISI | yes | International Collaboration | yes | ||
| Call Number | IFIC @ pastor @ | Serial | 5923 | ||
| Permanent link to this record | |||||
| Author | Caputo, A.; Esposito, A.; Geoffray, E.; Polosa, A.D.; Sun, S.C. | ||||
| Title | Dark matter, dark photon and superfluid He-4 from effective field theory | Type | Journal Article | ||
| Year | 2020 | Publication | Physics Letters B | Abbreviated Journal | Phys. Lett. B |
| Volume | 802 | Issue | Pages | 135258 - 6pp | |
| Keywords | Light dark matter; Effective theory; Helium; Phonon; Dark photon | ||||
| Abstract | We consider a model of sub-GeV dark matter whose interaction with the Standard Model is mediated by a new vector boson (the dark photon) which couples kinetically to the photon. We describe the possibility of constraining such a model using a superfluid He-4 detector, by means of an effective theory for the description of the superfluid phonon. We find that such a detector could provide bounds that are competitive with other direct detection experiments only for ultralight vector mediator, in agreement with previous studies. As a byproduct we also present, for the first time, the low-energy effective field theory for the interaction between photons and phonons. | ||||
| Address | [Caputo, Andrea] Univ Valencia, Inst Fis Corpuscular, Edificio Inst Invest,Catedratico Jose Beltran 2, Paterna 46980, Spain, Email: angelo.esposito@epfl.ch | ||||
| Corporate Author | Thesis | ||||
| Publisher | Elsevier | Place of Publication | Editor | ||
| Language | English | Summary Language | Original Title | ||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0370-2693 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | WOS:000515091400017 | Approved | no | ||
| Is ISI | yes | International Collaboration | yes | ||
| Call Number | IFIC @ pastor @ | Serial | 4349 | ||
| Permanent link to this record | |||||