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13 results on '"Banto Oberhauser B"'

1. First constraints on the Lμ− Lτ explanation of the muon g-2 anomaly from NA64-e at CERN

Author

Andreev, Yu. M., Antonov, A., Banerjee, D., Banto Oberhauser, B., Bernhard, J., Bisio, P., Celentano, A., Charitonidis, N., Cooke, D., Crivelli, P., Depero, E., Dermenev, A. V., Donskov, S. V., Dusaev, R. R., Enik, T., Frolov, V. N., Gardikiotis, A., Gertsenberger, S. V., Girod, S., Gninenko, S. N., Hösgen, M., Kachanov, V. A., Kambar, Y., Karneyeu, A. E., Kasianova, E. A., Kekelidze, G., Ketzer, B., Kirpichnikov, D. V., Kirsanov, M. M., Kolosov, V. N., Kramarenko, V. A., Kravchuk, L. V., Krasnikov, N. V., Kuleshov, S. V., Lyubovitskij, V. E., Lysan, V., Marini, A., Marsicano, L., Matveev, V. A., Mena Fredes, R., Mena Yanssen, R., Molina Bueno, L., Mongillo, M., Peshekhonov, D. V., Polyakov, V. A., Radics, B., Salamatin, K., Samoylenko, V. D., Sieber, H., Shchukin, D., Soto, O., Tikhomirov, V. O., Tlisova, I., Toropin, A. N., Tuzi, M., Ulloa, P., Volkov, P. V., Volkov, V. Yu., Voronchikhin, I. V., Zamora-Saá, J., and Zhevlakov, A. S.

Published
2024
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2. Search for a New B-L Z' Gauge Boson with the NA64 Experiment at CERN

Author

Andreev, Yu. M., Banerjee, D., Banto-Oberhauser, B., Bernhard, J., Bisio, P., Bondi, M., Burtsev, V., Celentano, A., Charitonidis, N., Chumakov, A. G., Cooke, D., Crivelli, P., Depero, E., Dermenev, A. V., Donskov, S. V., Dusaev, R. R., Enik, T., Frolov, V. N., Gardikiotis, A., Gerassimov, S. G., Gninenko, S. N., Hosgen, M., Jeckel, M., Kachanov, V. A., Karneyeu, A. E., Kekelidze, G. D., Ketzer, B., Kirpichnikov, D. V., Kirsanov, M. M., Kolosov, V. N., Kovalenko, S. G., Kramarenko, V. A., Kravchuk, L. V., Krasnikov, N. V., Kuleshov, S. V., Lyubovitskij, V. E., Lysan, V., Marsicano, L., Matveev, V. A., Mikhailov, Yu. V., Bueno, L. Molina, Peshekhonov, D. V., Polyakov, V. A., Radics, B., Rubbia, A., Salamatin, K., Samoylenko, V. D., Sieber, H., Shchukin, D., Soto, O., Tikhomirov, V. O., Tlisova, I., Toropin, A. N., Vasilishin, B. I., Volkov, P. V., Volkov, V. Yu., Voronchikhin, I., and Zamora-Saa, J.

Subjects
High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract

A search for a new $Z'$ gauge boson associated with (un)broken B-L symmetry in the keV-GeV mass range is carried out for the first time using the missing-energy technique in the NA64 experiment at the CERN SPS. From the analysis of the data with 3.22e11 electrons on target collected during 2016-2021 runs no signal events were found. This allows to derive new constraints on the $Z'-e$ coupling strength, which for the mass range $0.3 < m_{Z'} < 100$ MeV are more stringent compared to those obtained from the neutrino-electron scattering data., Comment: 6 pages, 3 figures. Revised shorter version, Fig.3 updated, published in Physical Review Letters

Published
2022
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4. Measurement of the intrinsic hadronic contamination in the NA64[formula omitted] high-purity [formula omitted] beam at CERN

Author

Andreev, Yu.M., Banerjee, D., Banto Oberhauser, B., Bernhard, J., Bisio, P., Bondí, M., Celentano, A., Charitonidis, N., Chumakov, A.G., Cooke, D., Crivelli, P., Depero, E., Dermenev, A.V., Donskov, S.V., Dusaev, R.R., Enik, T., Frolov, V.N., Gardikiotis, A., Gerassimov, S.G., Gninenko, S.N., Hösgen, M., Jeckel, M., Kachanov, V.A., Kambar, Y., Karneyeu, A.E., Kekelidze, G., Ketzer, B., Kirpichnikov, D.V., Kirsanov, M.M., Kolosov, V.N., Konorov, I.V., Gertsenberger, S.V., Kasianova, E.A., Kovalenko, S.G., Kramarenko, V.A., Kravchuk, L.V., Krasnikov, N.V., Kuleshov, S.V., Lyubovitskij, V.E., Lysan, V., Marini, A., Marsicano, L., Matveev, V.A., Mikhailov, Yu.V., Molina Bueno, L., Mongillo, M., Peshekhonov, D.V., Polyakov, V.A., Radics, B., Rojas, R., Salamatin, K., Samoylenko, V.D., Sieber, H., Shchukin, D., Soto, O., Tikhomirov, V.O., Tlisova, I., Toropin, A.N., Trifonov, A.Yu., Tuzi, M., Ulloa, P., Vasilishin, B.I., Vasquez Arenas, G., Volkov, P.V., Volkov, V.Yu., Voronchikhin, I.V., Zamora-Saá, J., and Zhevlakov, A.S.

Published
2023
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5. First Results in the Search for Dark Sectors at NA64 with the CERN SPS High Energy Muon Beam

Author

Andreev, Yu. M., primary, Banerjee, D., additional, Banto Oberhauser, B., additional, Bernhard, J., additional, Bisio, P., additional, Charitonidis, N., additional, Crivelli, P., additional, Depero, E., additional, Dermenev, A. V., additional, Donskov, S. V., additional, Dusaev, R. R., additional, Enik, T., additional, Frolov, V. N., additional, Gardikiotis, A., additional, Gertsenberger, S. V., additional, Girod, S., additional, Gninenko, S. N., additional, Hösgen, M., additional, Joosten, R., additional, Kachanov, V. A., additional, Kambar, Y., additional, Karneyeu, A. E., additional, Kasianova, E. A., additional, Kekelidze, G., additional, Ketzer, B., additional, Kirpichnikov, D. V., additional, Kirsanov, M. M., additional, Kolosov, V. N., additional, Kramarenko, V. A., additional, Kravchuk, L. V., additional, Krasnikov, N. V., additional, Kuleshov, S. V., additional, Lyubovitskij, V. E., additional, Lysan, V., additional, Matveev, V. A., additional, Mena Fredes, R., additional, Mena Yanssen, R. G., additional, Molina Bueno, L., additional, Mongillo, M., additional, Peshekhonov, D. V., additional, Polyakov, V. A., additional, Radics, B., additional, Salamatin, K. M., additional, Samoylenko, V. D., additional, Shchukin, D. A., additional, Soto, O., additional, Sieber, H., additional, Tikhomirov, V. O., additional, Tlisova, I. V., additional, Toropin, A. N., additional, Tuzi, M., additional, Veit, M. B., additional, Volkov, P. V., additional, Volkov, V. Yu., additional, Voronchikhin, I. V., additional, Zamora-Saá, J., additional, and Zhevlakov, A. S., additional

Published
2024
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6. First constraints on the Lμ− Lτ explanation of the muon g-2 anomaly from NA64-e at CERN.

Author

Andreev, Yu. M., Antonov, A., Banerjee, D., Banto Oberhauser, B., Bernhard, J., Bisio, P., Celentano, A., Charitonidis, N., Cooke, D., Crivelli, P., Depero, E., Dermenev, A. V., Donskov, S. V., Dusaev, R. R., Enik, T., Frolov, V. N., Gardikiotis, A., Gertsenberger, S. V., Girod, S., and Gninenko, S. N.

Abstract

The inclusion of an additional U(1) gauge Lμ − Lτ symmetry would release the tension between the measured and the predicted value of the anomalous muon magnetic moment: this paradigm assumes the existence of a new, light Z′ vector boson, with dominant coupling to μ and τ leptons and interacting with electrons via a loop mechanism. The Lμ − Lτ model can also explain the Dark Matter relic abundance, by assuming that the Z′ boson acts as a “portal” to a new Dark Sector of particles in Nature, not charged under known interactions. In this work we present the results of the Z′ search performed by the NA64-e experiment at CERN SPS, that collected ~ 9 × 1011 100 GeV electrons impinging on an active thick target. Despite the suppressed Z′ production yield with an electron beam, NA64-e provides the first accelerator-based results excluding the g − 2 preferred band of the Z′ parameter space in the 1 keV < m Z ′ ≲ 2 MeV range, in complementarity with the limits recently obtained by the NA64-μ experiment with a muon beam. [ABSTRACT FROM AUTHOR]

Published
2024
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7. Measurement of the intrinsic hadronic contamination in the NA64−e high-purity e+/e− beam at CERN

Author

Andreev, Yu.M., primary, Banerjee, D., additional, Banto Oberhauser, B., additional, Bernhard, J., additional, Bisio, P., additional, Bondí, M., additional, Celentano, A., additional, Charitonidis, N., additional, Chumakov, A.G., additional, Cooke, D., additional, Crivelli, P., additional, Depero, E., additional, Dermenev, A.V., additional, Donskov, S.V., additional, Dusaev, R.R., additional, Enik, T., additional, Frolov, V.N., additional, Gardikiotis, A., additional, Gerassimov, S.G., additional, Gninenko, S.N., additional, Hösgen, M., additional, Jeckel, M., additional, Kachanov, V.A., additional, Kambar, Y., additional, Karneyeu, A.E., additional, Kekelidze, G., additional, Ketzer, B., additional, Kirpichnikov, D.V., additional, Kirsanov, M.M., additional, Kolosov, V.N., additional, Konorov, I.V., additional, Gertsenberger, S.V., additional, Kasianova, E.A., additional, Kovalenko, S.G., additional, Kramarenko, V.A., additional, Kravchuk, L.V., additional, Krasnikov, N.V., additional, Kuleshov, S.V., additional, Lyubovitskij, V.E., additional, Lysan, V., additional, Marini, A., additional, Marsicano, L., additional, Matveev, V.A., additional, Mikhailov, Yu.V., additional, Molina Bueno, L., additional, Mongillo, M., additional, Peshekhonov, D.V., additional, Polyakov, V.A., additional, Radics, B., additional, Rojas, R., additional, Salamatin, K., additional, Samoylenko, V.D., additional, Sieber, H., additional, Shchukin, D., additional, Soto, O., additional, Tikhomirov, V.O., additional, Tlisova, I., additional, Toropin, A.N., additional, Trifonov, A.Yu., additional, Tuzi, M., additional, Ulloa, P., additional, Vasilishin, B.I., additional, Vasquez Arenas, G., additional, Volkov, P.V., additional, Volkov, V.Yu., additional, Voronchikhin, I.V., additional, Zamora-Saá, J., additional, and Zhevlakov, A.S., additional

Published
2023
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8. Search for a New <math><mi>B</mi><mo>−</mo><mi>L</mi></math> <math><msup><mi>Z</mi><mo>′</mo></msup></math> Gauge Boson with the NA64 Experiment at CERN

Author

Andreev, Yu. M., Banerjee, D., Banto Oberhauser, B., Bernhard, J., Bisio, P., Burtsev, V. E., Celentano, A., Charitonidis, N., Chumakov, A. G., Cooke, D., Crivelli, P., Depero, E., Dermenev, A. V., Donskov, S. V., Dusaev, R. R., Enik, T., Frolov, V. N., Gardikiotis, A., Gerassimov, S. G., Gninenko, S. N., Hösgen, M., Jeckel, M., Kachanov, V. A., Karneyeu, A. E., Kekelidze, G., Ketzer, B., Kirpichnikov, D. V., Kirsanov, M. M., Kolosov, V. N., Kovalenko, S. G., Kramarenko, V. A., Kravchuk, L. V., Krasnikov, N. V., Kuleshov, S. V., Lyubovitskij, V. E., Lysan, V., Marsicano, L., Matveev, V. A., Mikhailov, Yu. V., Molina Bueno, L., Peshekhonov, D. V., Polyakov, V. A., Radics, B., Rubbia, A., Salamatin, K. M., Samoylenko, V. D., Sieber, H., Shchukin, D., Soto, O., Tikhomirov, V. O., Tlisova, I. V., Toropin, A. N., Vasilishin, B. I., Volkov, P. V., Volkov, V. Yu., Voronchikhin, I., and Zamora-Saá, J.

Abstract

A search for a new Z′ gauge boson associated with (un)broken B−L symmetry in the keV–GeV mass range is carried out for the first time using the missing-energy technique in the NA64 experiment at the CERN SPS. From the analysis of the data with 3.22×1011 electrons on target collected during 2016–2021 runs, no signal events were found. This allows us to derive new constraints on the Z′−e coupling strength, which, for the mass range 0.3≲mZ′≲100 MeV, are more stringent compared to those obtained from the neutrino-electron scattering data.

Published
2022

9. Search for a light <math><msup><mi>Z</mi><mo>′</mo></msup></math> in the <math><msub><mi>L</mi><mi>μ</mi></msub><mo>−</mo><msub><mi>L</mi><mi>τ</mi></msub></math> scenario with the NA64-<math><mi>e</mi></math> experiment at CERN

Author

Andreev, Yu. M., Banerjee, D., Banto Oberhauser, B., Bernhard, J., Bisio, P., Bondí, M., Burtsev, V. E., Celentano, A., Charitonidis, N., Chumakov, A. G., Cooke, D., Crivelli, P., Depero, E., Dermenev, A. V., Donskov, S. V., Dusaev, R. R., Enik, T., Frolov, V. N., Gardikiotis, A., Gerassimov, S. G., Gninenko, S. N., Hösgen, M., Jeckel, M., Kachanov, V. A., Karneyeu, A. E., Kekelidze, G., Ketzer, B., Kirpichnikov, D. V., Kirsanov, M. M., Kolosov, V. N., Konorov, I. V., Kovalenko, S. G., Kramarenko, V. A., Kravchuk, L. V., Krasnikov, N. V., Kuleshov, S. V., Lyubovitskij, V. E., Lysan, V., Marsicano, L., Matveev, V. A., Mikhailov, Yu. V., Molina Bueno, L., Peshekhonov, D. V., Polyakov, V. A., Radics, B., Rojas, R., Rubbia, A., Salamatin, K. M., Samoylenko, V. D., Sieber, H., Shchukin, D., Tikhomirov, V. O., Tlisova, I., Toropin, A. N., Trifonov, A. Yu., Ulloa, P., Vasilishin, B. I., Vasquez Arenas, G., Volkov, P. V., Volkov, V. Yu., and Voronchikhin, I.

Abstract

The extension of Standard Model made by inclusion of additional U(1) gauge Lμ−Lτ symmetry can explain the difference between the measured and the predicted value of the muon magnetic moment and solve the tension in B meson decays. This model predicts the existence of a new, light Z′ vector boson, predominantly coupled to second and third generation leptons, whose interaction with electrons is due to a loop mechanism involving muons and taus. In this work, we present a rigorous evaluation of the upper limits in the Z′ parameter space, obtained from the analysis of the data collected by the NA64-e experiment at CERN SPS, that performed a search for light dark matter with 2.84×1011 electrons impinging with 100 GeV on an active thick target. The resulting limits touch the muon g−2 preferred band for values of the Z′ mass of order of 1 MeV, while the sensitivity projections for the future high-statistics NA64-e runs demonstrate the power of the electrons/positron beam approach in this theoretical scenario.

Published
2022

10. Search for a New $B$ - $L$ $Z'$ Gauge Boson with the NA64 Experiment at CERN

Author

Andreev, Yu. M., Banerjee, D., Banto-Oberhauser, B., Bernhard, J., Bisio, P., Bondi, M., Burtsev, V., Celentano, A., Charitonidis, N., Chumakov, A. G., Cooke, D., Crivelli, P., Depero, E., Dermenev, A. V., Donskov, S. V., Dusaev, R. R., Enik, T., Frolov, V. N., Gardikiotis, A., Gerassimov, S. G., Gninenko, S. N., Hosgen, M., Jeckel, M., Kachanov, V. A., Karneyeu, A. E., Kekelidze, G. D., Ketzer, B., Kirpichnikov, D. V., Kirsanov, M. M., Kolosov, V. N., Kovalenko, S. G., Kramarenko, V. A., Kravchuk, L. V., Krasnikov, N. V., Kuleshov, S. V., Lyubovitskij, V. E., Lysan, V., Marsicano, L., Matveev, V. A., Mikhailov, Yu. V., Bueno, L. Molina, Peshekhonov, D. V., Polyakov, V. A., Radics, B., Rubbia, A., Salamatin, K., Samoylenko, V. D., Sieber, H., Shchukin, D., Soto, O., Tikhomirov, V. O., Tlisova, I., Toropin, A. N., Vasilishin, B. I., Volkov, P. V., Volkov, V. Yu., Voronchikhin, I., and Zamora-Saa, J.

Subjects
High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), hep-ex, FOS: Physical sciences, hep-ph, Particle Physics - Experiment, High Energy Physics - Experiment, Particle Physics - Phenomenology
Abstract

A search for a new $Z'$ gauge boson associated with (un)broken B-L symmetry in the keV-GeV mass range is carried out for the first time using the missing-energy technique in the NA64 experiment at the CERN SPS. From the analysis of the data with 3.22e11 electrons on target collected during 2016-2021 runs no signal events were found. This allows to derive new constraints on the $Z'-e$ coupling strength, which for the mass range $0.3 < m_{Z'} < 100$ MeV are more stringent compared to those obtained from the neutrino-electron scattering data., 6 pages, 3 figures. Revised shorter version, Fig.3 updated, published in Physical Review Letters

Published
2022

11. Search for a light muon-philic Z′ with the NA64-e experiment at CERN

Author

Andreev, Yu. M., Banerjee, D., Banto Oberhauser, B., Bernhard, J., Bisio, P., Bondì, M., Burtsev, V. E., Celentano, A., Charitonidis, N., Chumakov, A. G., Cooke, D., Crivelli, P., Depero, E., Dermenev, A. V., Donskov, S. V., Dusaev, R. R, Enik, T., Frolov, V. N., Gardikiotis, A., Gerassimov, S. G., Gninenko, S. N., Hösgen, M., Jeckel, M., Kachanov, V. A., Karneyeu, A. E., Kekelidze, G., Ketzer, B., Kirpichnikov, D. V., Kirsanov, M. M., Kolosov, V. N., Konorov, I. V., Kovalenko, S. G., Kramarenko, V. A., Kravchuk, L. V., Krasnikov, N. V., Kuleshov, S. V., Lyubovitskij, V. E., Lysan, V., Marsicano, L., Matveev, V. A., Mikhailov, Yu. V., Molina Bueno, L., Peshekhonov, D. V., Polyakov, V. A., Radics, B., Rojas, R., Rubbia, A., Samalantin, K., Samoylenko, V. D., Sieber, H., Shchukin, D., Tikhomirov, V. O., Tlisova, I., Toropin, A. N., Trifonov, A. Yu, Ulloa, P., Vasilishin, B. I., Vasquez Arenas, G., Volkov, P. V., Volkov, V. Yu., and Voronchikhin, I.

Subjects
High Energy Physics::Experiment, Particle Physics - Experiment
Abstract

The extension of Standard Model made by inclusion of additional U (1) gauge L_μ − L_τ symmetry can explain the difference between the measured and the predicted value of the muon magnetic moment and solve the tension in B meson decays. This model predicts the existence of a new, light Z′ vector boson, predominantly coupled to second and third generation leptons, whose interaction with electrons is due to a loop mechanism involving muons and taus. In this work, we present a rigorous evaluation of the upper limits in the Z′ parameter space, obtained from the analysis of the data collected by the NA64-e experiment at CERN SPS, that performed a search for light dark matter with 2.84 × 10^11 electrons impinging with 100 GeV on an active thick target. The resulting limits, despite being included in a region already investigated by neutrino experiments, touch the muon g − 2 preferred band for values of the Z′ mass of order of 1 MeV. The sensitivity projections for the future high-statistics NA64-e runs demonstrate the power of the electrons/positron beam approach in this theoretical scenario.

Published
2022

12. Search for Light Dark Matter with NA64 at CERN.

Author

Andreev YM, Banerjee D, Banto Oberhauser B, Bernhard J, Bisio P, Celentano A, Charitonidis N, Chumakov AG, Cooke D, Crivelli P, Depero E, Dermenev AV, Donskov SV, Dusaev RR, Enik T, Frolov VN, Galleguillos Silva RB, Gardikiotis A, Gertsenberger SV, Girod S, Gninenko SN, Hösgen M, Kachanov VA, Kambar Y, Karneyeu AE, Kasianova EA, Kekelidze GD, Ketzer B, Kirpichnikov DV, Kirsanov MM, Kolosov VN, Kramarenko VA, Kravchuk LV, Krasnikov NV, Kuleshov SV, Lyubovitskij VE, Lysan V, Marini A, Marsicano L, Matveev VA, Mena Fredes R, Mena Yanssen RG, Molina Bueno L, Mongillo M, Peshekhonov DV, Polyakov VA, Radics B, Salamatin KM, Samoylenko VD, Sieber H, Shchukin DA, Soto O, Tikhomirov VO, Tlisova IV, Toropin AN, Tuzi M, Vasilishin BI, Volkov PV, Volkov VY, Voronchikhin IV, Zamora-Saá J, and Zhevlakov AS

Abstract

Thermal dark matter models with particle χ masses below the electroweak scale can provide an explanation for the observed relic dark matter density. This would imply the existence of a new feeble interaction between the dark and ordinary matter. We report on a new search for the sub-GeV χ production through the interaction mediated by a new vector boson, called the dark photon A^{'}, in collisions of 100 GeV electrons with the active target of the NA64 experiment at the CERN SPS. With 9.37×10^{11} electrons on target collected during 2016-2022 runs NA64 probes for the first time the well-motivated region of parameter space of benchmark thermal scalar and fermionic dark matter models. No evidence for dark matter production has been found. This allows us to set the most sensitive limits on the A^{'} couplings to photons for masses m&#95;{A^{'}}≲0.35  GeV, and to exclude scalar and Majorana dark matter with the χ-A^{'} coupling α&#95;{D}≤0.1 for masses 0.001≲m&#95;{χ}≲0.1  GeV and 3m&#95;{χ}≤m&#95;{A^{'}}.

Published
2023
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13. Constraining light thermal inelastic dark matter with NA64.

Author

Mongillo M, Abdullahi A, Banto Oberhauser B, Crivelli P, Hostert M, Massaro D, Molina Bueno L, and Pascoli S

Abstract

A vector portal between the Standard Model and the dark sector is a predictive and compelling framework for thermal dark matter. Through co-annihilations, models of inelastic dark matter (iDM) and inelastic Dirac dark matter (i2DM) can reproduce the observed relic density in the MeV to GeV mass range without violating cosmological limits. In these scenarios, the vector mediator behaves like a semi-visible particle, evading traditional bounds on visible or invisible resonances, and uncovering new parameter space to explain the muon ( g - 2 ) anomaly. By means of a more inclusive signal definition at the NA64 experiment, we place new constraints on iDM and i2DM using a missing energy technique. With a recast-based analysis, we contextualize the NA64 exclusion limits in parameter space and estimate the reach of the newly collected and expected future NA64 data. Our results motivate the development of an optimized search program for semi-visible particles, in which fixed-target experiments like NA64 provide a powerful probe in the sub-GeV mass range., (© The Author(s) 2023.)

Published
2023
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