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Article ; Online: Search for Light Dark Matter with NA64 at CERN.

Andreev, Yu M / Banerjee, D / Banto Oberhauser, B / Bernhard, J / Bisio, P / 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 / Galleguillos Silva, R B / 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 D / 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 G / Molina Bueno, L / Mongillo, M / Peshekhonov, D V / Polyakov, V A / Radics, B / Salamatin, K M / Samoylenko, V D / Sieber, H / Shchukin, D A / Soto, O / Tikhomirov, V O / Tlisova, I V / Toropin, A N / Tuzi, M / Vasilishin, B I / Volkov, P V / Volkov, V Yu / Voronchikhin, I V / Zamora-Saá, J / Zhevlakov, A S

Physical review letters

2023 Volume 131, Issue 16, Page(s) 161801

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 ... ...

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_{A^{'}}≲0.35 GeV, and to exclude scalar and Majorana dark matter with the χ-A^{'} coupling α_{D}≤0.1 for masses 0.001≲m_{χ}≲0.1 GeV and 3m_{χ}≤m_{A^{'}}.
Language	English
Publishing date	2023-11-05
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.131.161801
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Book ; Online: Measurement of the $\eta$ -$\eta'$ mixing angle in $\pi^{-}$ and $K^{-}$ beams with GAMS-$4\pi$ Setup

Donskov, S. V. / Kolosov, V. N. / Lednev, A. A. / Mikhailov, Yu. V. / Polyakov, V. A. / Samoylenko, V. D. / Khaustov, G. V.

2013

Abstract: The results of mixing angle measurement for $\eta'$, $\eta$ mesons generated in charge exchange reactions with $\pi^{-}$ and $K^{-}$ beams are preseneted. When the $\eta'$, $\eta$ mesons are described in nonstrange(NS)--strange(S) quark basis the $\pi^{-} ...

Abstract	The results of mixing angle measurement for $\eta'$, $\eta$ mesons generated in charge exchange reactions with $\pi^{-}$ and $K^{-}$ beams are preseneted. When the $\eta'$, $\eta$ mesons are described in nonstrange(NS)--strange(S) quark basis the $\pi^{-}$ and $K^{-}$ beams allow to study $\|\eta_{q}>$ and $\|\eta_{s}>$ parts of the meson wave function. The cross section ratio at $t'=0$ (GeV/c)$^{2}$ in the $\pi^{-}$ beam is $R_{\pi}(\eta'/\eta)= 0.56 \pm 0.04$, results in mixing angle $\phi_{P} = (36.8 \pm 1.)^{o} $. For $K^{-}$ beam the ratio is $R_{K}(\eta'/\eta)= 1.30 \pm 0.16$. It was found that gluonium content in $\eta'$ is $\sin^{2}\psi_{G}= 0.15 \pm 0.06$. The experiment was carried out with GAMS-4$\pi$ Setup. Comment: 6 pages, 4 figures, 1 table, to be submitted in European physical journal C. Minor changes, the Bibliography extended
Keywords	High Energy Physics - Experiment ; High Energy Physics - Phenomenology
Subject code	551
Publishing date	2013-01-29
Publishing country	us
Document type	Book ; Online
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Article ; Online: Constraints on New Physics in Electron g-2 from a Search for Invisible Decays of a Scalar, Pseudoscalar, Vector, and Axial Vector.

Andreev, Yu M / Banerjee, D / Bernhard, J / Burtsev, V E / Chumakov, A G / Cooke, D / Crivelli, P / Depero, E / Dermenev, A V / Donskov, S V / Dusaev, R R / Enik, T / Charitonidis, N / Feshchenko, A / Frolov, V N / Gardikiotis, A / Gerassimov, S G / Gninenko, S N / Hösgen, 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 / Matveev, V A / Mikhailov, Yu V / Molina Bueno, L / Peshekhonov, D V / Polyakov, V A / Radics, B / Rojas, R / Rubbia, A / Samoylenko, V D / Sieber, H / Shchukin, D / Tikhomirov, V O / Tlisova, I / Toropin, A N / Trifonov, A Yu / Vasilishin, B I / Volkov, P V / Volkov, V Yu

Physical review letters

2021 Volume 126, Issue 21, Page(s) 211802

Abstract: We performed a search for a new generic X boson, which could be a scalar (S), pseudoscalar (P), vector (V), or an axial vector (A) particle produced in the 100 GeV electron scattering off nuclei, e^{-}Z→e^{-}ZX, followed by its invisible decay in the ... ...

Abstract	We performed a search for a new generic X boson, which could be a scalar (S), pseudoscalar (P), vector (V), or an axial vector (A) particle produced in the 100 GeV electron scattering off nuclei, e^{-}Z→e^{-}ZX, followed by its invisible decay in the NA64 experiment at CERN. No evidence for such a process was found in the full NA64 dataset of 2.84×10^{11} electrons on target. We place new bounds on the S, P, V, A coupling strengths to electrons, and set constraints on their contributions to the electron anomalous magnetic moment a_{e}, \|Δa_{X}\|≲10^{-15}-10^{-13} for the X mass region 1 MeV≲m_{X}≲1 GeV. These results are an order of magnitude more sensitive compared to the current accuracy on a_{e} from the electron g-2 experiments and recent high-precision determination of the fine structure constant.
Language	English
Publishing date	2021-06-11
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.126.211802
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Article ; Online: Search for a New B-L Z^{'} Gauge Boson with the NA64 Experiment at CERN.

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 / Samalantin, 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 / Zamora-Saá, J

Physical review letters

2022 Volume 129, Issue 16, Page(s) 161801

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 3.22×10^ ...

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 3.22×10^{11} 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≲m_{Z^{'}}≲100 MeV, are more stringent compared to those obtained from the neutrino-electron scattering data.
Language	English
Publishing date	2022-10-20
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.129.161801
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Search for Axionlike and Scalar Particles with the NA64 Experiment.

Banerjee, D / Bernhard, J / Burtsev, V E / Chumakov, A G / Cooke, D / Crivelli, P / Depero, E / Dermenev, A V / Donskov, S V / Dusaev, R R / Enik, T / Charitonidis, N / Feshchenko, A / 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 / Matveev, V A / Mikhailov, Yu V / Molina Bueno, L / Peshekhonov, D V / Polyakov, V A / Radics, B / Rojas, R / Rubbia, A / Samoylenko, V D / Sieber, H / Shchukin, D / Tikhomirov, V O / Tlisova, I / Tlisov, D A / Toropin, A N / Trifonov, A Yu / Vasilishin, B I / Vasquez Arenas, G / Volkov, P V / Volkov, V Yu / Ulloa, P

Physical review letters

2020 Volume 125, Issue 8, Page(s) 81801

Abstract: We carried out a model-independent search for light scalar (s) and pseudoscalar axionlike (a) particles that couple to two photons by using the high-energy CERN SPS H4 electron beam. The new particles, if they exist, could be produced through the ... ...

Abstract	We carried out a model-independent search for light scalar (s) and pseudoscalar axionlike (a) particles that couple to two photons by using the high-energy CERN SPS H4 electron beam. The new particles, if they exist, could be produced through the Primakoff effect in interactions of hard bremsstrahlung photons generated by 100 GeV electrons in the NA64 active dump with virtual photons provided by the nuclei of the dump. The a(s) would penetrate the downstream HCAL module, serving as a shield, and would be observed either through their a(s)→γγ decay in the rest of the HCAL detector, or as events with a large missing energy if the a(s) decays downstream of the HCAL. This method allows for the probing of the a(s) parameter space, including those from generic axion models, inaccessible to previous experiments. No evidence of such processes has been found from the analysis of the data corresponding to 2.84×10^{11} electrons on target, allowing us to set new limits on the a(s)γγ-coupling strength for a(s) masses below 55 MeV.
Language	English
Publishing date	2020-03-25
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.125.081801
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Probing the explanation of the muon (g-2) anomaly and thermal light dark matter with the semi-visible dark photon channel.

Cazzaniga, C / Odagiu, P / Depero, E / Molina Bueno, L / Andreev, Yu M / Banerjee, D / Bernhard, J / Burtsev, V E / Charitonidis, N / Chumakov, A G / Cooke, D / Crivelli, P / Dermenev, A V / Donskov, S V / Dusaev, R R / Enik, T / Feshchenko, A / Frolov, V N / Gardikiotis, A /

Gerassimov, S G / Girod, S / Gninenko, S N / Hösgen, 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 / Matveev, V A / Mikhailov, Yu V / Peshekhonov, D V / Polyakov, V A / Radics, B / Rojas, R / Rubbia, A / Samoylenko, V D / Shchukin, D / Sieber, H / Tikhomirov, V O / Tlisova, I V / Tlisov, D A / Toropin, A N / Trifonov, A Yu / Vasilishin, B I / Arenas, G Vasquez / Volkov, P V / Volkov, V Yu / Ulloa, P

The European physical journal. C, Particles and fields

2021 Volume 81, Issue 10, Page(s) 959

Abstract: We report the results of a search for a new vector boson ( ...

Abstract	We report the results of a search for a new vector boson (
Language	English
Publishing date	2021-10-30
Publishing country	France
Document type	Journal Article
ZDB-ID	1459069-4
ISSN	1434-6052 ; 1434-6044
ISSN (online)	1434-6052
ISSN	1434-6044
DOI	10.1140/epjc/s10052-021-09705-5
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Article: Hunting down the X17 boson at the CERN SPS.

Depero, E / Andreev, Yu M / Banerjee, D / Bernhard, J / Burtsev, V E / Charitonidis, N / Chumakov, A G / Cooke, D / Crivelli, P / Dermenev, A V / Donskov, S V / Dusaev, R R / Enik, T / Feshchenko, A / Frolov, V N / Gardikiotis, A / Gerassimov, S G / Girod, S / Gninenko, S N /

Hösgen, 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 / Matveev, V A / Mikhailov, Yu V / Bueno, L Molina / Peshekhonov, D V / Polyakov, V A / Radics, B / Rojas, R / Rubbia, A / Samoylenko, V D / Shchukin, D / Sieber, H / Tikhomirov, V O / Tlisova, vI / Tlisov, D A / Toropin, A N / Trifonov, A Yu / Vasilishin, B I / Arenas, G Vasquez / Volkov, P V / Volkov, V Yu / Ulloa, P

The European physical journal. C, Particles and fields

2020 Volume 80, Issue 12, Page(s) 1159

Abstract: Recently, the ATOMKI experiment has reported new evidence for the excess ... ...

Abstract	Recently, the ATOMKI experiment has reported new evidence for the excess of
Language	English
Publishing date	2020-12-15
Publishing country	France
Document type	Journal Article
ZDB-ID	1459069-4
ISSN	1434-6052 ; 1434-6044
ISSN (online)	1434-6052
ISSN	1434-6044
DOI	10.1140/epjc/s10052-020-08725-x
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Article ; Online: Triangle Singularity as the Origin of the a_{1}(1420).

Alexeev, G D / Alexeev, M G / Amoroso, A / Andrieux, V / Anosov, V / Antoshkin, A / Augsten, K / Augustyniak, W / Azevedo, C D R / Badełek, B / Balestra, F / Ball, M / Barth, J / Beck, R / Bedfer, Y / Berenguer Antequera, J / Bernhard, J / Bodlak, M / Bradamante, F /

Bressan, A / Burtsev, V E / Chang, W-C / Chatterjee, C / Chiosso, M / Chumakov, A G / Chung, S-U / Cicuttin, A / Correia, P M M / Crespo, M L / D'Ago, D / Dalla Torre, S / Dasgupta, S S / Dasgupta, S / Denisenko, I / Denisov, O Yu / Donskov, S V / Doshita, N / Dreisbach, Ch / Dünnweber, W / Dusaev, R R / Efremov, A / Eversheim, P D / Faccioli, P / Faessler, M / Finger, M / Fischer, H / Franco, C / Friedrich, J M / Frolov, V / Gautheron, F / Gavrichtchouk, O P / Gerassimov, S / Giarra, J / Gnesi, I / Gorzellik, M / Grasso, A / Gridin, A / Grosse Perdekamp, M / Grube, B / Guskov, A / von Harrach, D / Heitz, R / Herrmann, F / Horikawa, N / d'Hose, N / Hsieh, C-Y / Huber, S / Ishimoto, S / Ivanov, A / Iwata, T / Jandek, M / Jary, V / Joosten, R / Jörg, P / Kabuß, E / Kaspar, F / Kerbizi, A / Ketzer, B / Khaustov, G V / Khokhlov, Yu A / Kisselev, Yu / Klein, F / Koivuniemi, J H / Kolosov, V N / Kondo Horikawa, K / Konorov, I / Konstantinov, V F / Kotzinian, A M / Kouznetsov, O M / Koval, A / Kral, Z / Krinner, F / Kulinich, Y / Kunne, F / Kurek, K / Kurjata, R P / Kveton, A / Lavickova, K / Levorato, S / Lian, Y-S / Lichtenstadt, J / Lin, P-J / Longo, R / Lyubovitskij, V E / Maggiora, A / Magnon, A / Makins, N / Makke, N / Mallot, G K / Maltsev, A / Mamon, S A / Marianski, B / Martin, A / Marzec, J / Matoušek, J / Matsuda, T / Mattson, G / Meshcheryakov, G V / Meyer, M / Meyer, W / Mikhailov, Yu V / Mikhasenko, M / Mitrofanov, E / Mitrofanov, N / Miyachi, Y / Moretti, A / Nagaytsev, A / Naim, C / Neyret, D / Nový, J / Nowak, W-D / Nukazuka, G / Nunes, A S / Olshevsky, A G / Ostrick, M / Panzieri, D / Parsamyan, B / Paul, S / Pekeler, H / Peng, J-C / Pešek, M / Peshekhonov, D V / Pešková, M / Pierre, N / Platchkov, S / Pochodzalla, J / Polyakov, V A / Pretz, J / Quaresma, M / Quintans, C / Reicherz, G / Riedl, C / Rudnicki, T / Ryabchikov, D I / Rybnikov, A / Rychter, A / Samoylenko, V D / Sandacz, A / Sarkar, S / Savin, I A / Sbrizzai, G / Schmieden, H / Selyunin, A / Sinha, L / Slunecka, M / Smolik, J / Srnka, A / Steffen, D / Stolarski, M / Subrt, O / Sulc, M / Suzuki, H / Sznajder, P / Tessaro, S / Tessarotto, F / Thiel, A / Tomsa, J / Tosello, F / Townsend, A / Tskhay, V / Uhl, S / Vasilishin, B I / Vauth, A / Veit, B M / Veloso, J / Ventura, B / Vidon, A / Virius, M / Wagner, M / Wallner, S / Zaremba, K / Zavada, P / Zavertyaev, M / Zemko, M / Zemlyanichkina, E / Zhao, Y / Ziembicki, M

Physical review letters

2021 Volume 127, Issue 8, Page(s) 82501

Abstract: The COMPASS Collaboration experiment recently discovered a new isovector resonancelike signal with axial-vector quantum numbers, the a_{1}(1420), decaying to f_{0}(980)π. With a mass too close to and a width smaller than the axial-vector ground state a_{ ... ...

Abstract	The COMPASS Collaboration experiment recently discovered a new isovector resonancelike signal with axial-vector quantum numbers, the a_{1}(1420), decaying to f_{0}(980)π. With a mass too close to and a width smaller than the axial-vector ground state a_{1}(1260), it was immediately interpreted as a new light exotic meson, similar to the X, Y, Z states in the hidden-charm sector. We show that a resonancelike signal fully matching the experimental data is produced by the decay of the a_{1}(1260) resonance into K^{*}(→Kπ)K[over ¯] and subsequent rescattering through a triangle singularity into the coupled f_{0}(980)π channel. The amplitude for this process is calculated using a new approach based on dispersion relations. The triangle-singularity model is fitted to the partial-wave data of the COMPASS experiment. Despite having fewer parameters, this fit shows a slightly better quality than the one using a resonance hypothesis and thus eliminates the need for an additional resonance in order to describe the data. We thereby demonstrate for the first time in the light-meson sector that a resonancelike structure in the experimental data can be described by rescattering through a triangle singularity, providing evidence for a genuine three-body effect.
Language	English
Publishing date	2021-09-03
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.127.082501
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Primenenie shestikaskadnogo impaktora Andersena dlia izucheniia bakterial'noĭ obsemenennosti tkaneĭ i predmetov odezhdy

Evdokimov, V L / Kuramshin, Iu V / Kutukova, A I / Kolosov, V N

Gigiena i sanitariia

1975 , Issue 8, Page(s) 55–58

Title translation	Use of the hexacascade Andersen impactor for study of the number of bacterial spores on fabric and clothing products.
MeSH term(s)	Aerosols ; Bacteriological Techniques/instrumentation ; Clothing ; Textiles
Chemical Substances	Aerosols
Language	Russian
Publishing date	1975-08
Publishing country	Russia (Federation)
Document type	Journal Article
ZDB-ID	410437-7
ISSN	0016-9900
ISSN	0016-9900
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Article ; Online: First Measurement of Transverse-Spin-Dependent Azimuthal Asymmetries in the Drell-Yan Process.

Aghasyan, M / Akhunzyanov, R / Alexeev, G D / Alexeev, M G / Amoroso, A / Andrieux, V / Anfimov, N V / Anosov, V / Antoshkin, A / Augsten, K / Augustyniak, W / Austregesilo, A / Azevedo, C D R / Badełek, B / Balestra, F / Ball, M / Barth, J / Beck, R / Bedfer, Y /

Bernhard, J / Bicker, K / Bielert, E R / Birsa, R / Bodlak, M / Bordalo, P / Bradamante, F / Bressan, A / Büchele, M / Chang, W-C / Chatterjee, C / Chiosso, M / Choi, I / Chung, S-U / Cicuttin, A / Crespo, M L / Dalla Torre, S / Dasgupta, S S / Dasgupta, S / Denisov, O Yu / Dhara, L / Donskov, S V / Doshita, N / Dreisbach, Ch / Dünnweber, W / Dziewiecki, M / Efremov, A / Eversheim, P D / Faessler, M / Ferrero, A / Finger, M / Fischer, H / Franco, C / du Fresne von Hohenesche, N / Friedrich, J M / Frolov, V / Fuchey, E / Gautheron, F / Gavrichtchouk, O P / Gerassimov, S / Giarra, J / Giordano, F / Gnesi, I / Gorzellik, M / Grasso, A / Grosse Perdekamp, M / Grube, B / Grussenmeyer, T / Guskov, A / Hahne, D / Hamar, G / von Harrach, D / Heinsius, F H / Heitz, R / Herrmann, F / Horikawa, N / d'Hose, N / Hsieh, C-Y / Huber, S / Ishimoto, S / Ivanov, A / Ivanshin, Yu / Iwata, T / Jary, V / Joosten, R / Jörg, P / Kabuß, E / Kerbizi, A / Ketzer, B / Khaustov, G V / Khokhlov, Yu A / Kisselev, Yu / Klein, F / Koivuniemi, J H / Kolosov, V N / Kondo, K / Königsmann, K / Konorov, I / Konstantinov, V F / Kotzinian, A M / Kouznetsov, O M / Kral, Z / Krämer, M / Kremser, P / Krinner, F / Kroumchtein, Z V / Kulinich, Y / Kunne, F / Kurek, K / Kurjata, R P / Kveton, A / Lednev, A A / Levillain, M / Levorato, S / Lian, Y-S / Lichtenstadt, J / Longo, R / Maggiora, A / Magnon, A / Makins, N / Makke, N / Mallot, G K / Marianski, B / Martin, A / Marzec, J / Matoušek, J / Matsuda, H / Matsuda, T / Meshcheryakov, G V / Meyer, M / Meyer, W / Mikhailov, Yu V / Mikhasenko, M / Mitrofanov, E / Mitrofanov, N / Miyachi, Y / Nagaytsev, A / Nerling, F / Neyret, D / Nový, J / Nowak, W-D / Nukazuka, G / Nunes, A S / Olshevsky, A G / Orlov, I / Ostrick, M / Panzieri, D / Parsamyan, B / Paul, S / Peng, J-C / Pereira, F / Pešek, M / Peshekhonov, D V / Pierre, N / Platchkov, S / Pochodzalla, J / Polyakov, V A / Pretz, J / Quaresma, M / Quintans, C / Ramos, S / Regali, C / Reicherz, G / Riedl, C / Rogacheva, N S / Roskot, M / Ryabchikov, D I / Rybnikov, A / Rychter, A / Salac, R / Samoylenko, V D / Sandacz, A / Santos, C / Sarkar, S / Savin, I A / Sawada, T / Sbrizzai, G / Schiavon, P / Schmidt, K / Schmieden, H / Schönning, K / Seder, E / Selyunin, A / Shevchenko, O Yu / Silva, L / Sinha, L / Sirtl, S / Slunecka, M / Smolik, J / Srnka, A / Steffen, D / Stolarski, M / Subrt, O / Sulc, M / Suzuki, H / Szabelski, A / Szameitat, T / Sznajder, P / Takewaka, S / Tasevsky, M / Tessaro, S / Terça, G / Tessarotto, F / Thiel, A / Tomsa, J / Tosello, F / Tskhay, V / Uhl, S / Vauth, A / Veloso, J / Virius, M / Vit, M / Vondra, J / Wallner, S / Weisrock, T / Wilfert, M / Ter Wolbeek, J / Zaremba, K / Zavada, P / Zavertyaev, M / Zemlyanichkina, E / Zhuravlev, N / Ziembicki, M

Physical review letters

2017 Volume 119, Issue 11, Page(s) 112002

Abstract: The first measurement of transverse-spin-dependent azimuthal asymmetries in the pion-induced Drell-Yan (DY) process is reported. We use the CERN SPS 190 GeV/c π^{-} beam and a transversely polarized ammonia target. Three azimuthal asymmetries giving ... ...

Abstract	The first measurement of transverse-spin-dependent azimuthal asymmetries in the pion-induced Drell-Yan (DY) process is reported. We use the CERN SPS 190 GeV/c π^{-} beam and a transversely polarized ammonia target. Three azimuthal asymmetries giving access to different transverse-momentum-dependent (TMD) parton distribution functions (PDFs) are extracted using dimuon events with invariant mass between 4.3 GeV/c^{2} and 8.5 GeV/c^{2}. Within the experimental uncertainties, the observed sign of the Sivers asymmetry is found to be consistent with the fundamental prediction of quantum chromodynamics (QCD) that the Sivers TMD PDFs extracted from DY have a sign opposite to the one extracted from semi-inclusive deep-inelastic scattering (SIDIS) data. We present two other asymmetries originating from the pion Boer-Mulders TMD PDFs convoluted with either the nucleon transversity or pretzelosity TMD PDFs. A recent COMPASS SIDIS measurement was obtained at a hard scale comparable to that of these DY results. This opens the way for possible tests of fundamental QCD universality predictions.
Language	English
Publishing date	2017-09-15
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.119.112002
Database	MEDical Literature Analysis and Retrieval System OnLINE

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