Standard

Combined limit on the production of a light gauge boson decaying into μ+μ− and π+π−. / The KLOE-2 Collaboration.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 784, 10.09.2018, p. 336-341.

Research output: Contribution to journal › Article › peer-review

Harvard

The KLOE-2 Collaboration 2018, 'Combined limit on the production of a light gauge boson decaying into μ+μ− and π+π−', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 784, pp. 336-341. https://doi.org/10.1016/j.physletb.2018.08.012

APA

The KLOE-2 Collaboration (2018). Combined limit on the production of a light gauge boson decaying into μ+μ− and π+π−. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 784, 336-341. https://doi.org/10.1016/j.physletb.2018.08.012

Vancouver

The KLOE-2 Collaboration. Combined limit on the production of a light gauge boson decaying into μ+μ− and π+π−. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2018 Sept 10;784:336-341. doi: 10.1016/j.physletb.2018.08.012

Author

The KLOE-2 Collaboration. / Combined limit on the production of a light gauge boson decaying into μ+μ− and π+π−. In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2018 ; Vol. 784. pp. 336-341.

BibTeX

@article{94cd14b659d941629f5f2112cf7fddf8,
title = "Combined limit on the production of a light gauge boson decaying into μ+μ− and π+π−",
abstract = "We searched for the μ+μ− decay of a light vector gauge boson, also known as dark photon, in the e+e−→μ+μ−γISR process by means of the Initial State Radiation (ISR) method. We used 1.93 fb−1 of data collected by the KLOE experiment at the DAΦNE ϕ-factory. No structures have been observed over the irreducible μ+μ− background. A 90% CL limit on the ratio ε2=α′/α between the dark coupling constant and the fine structure constant of 3×10−6–2×10−7 has been set in the dark photon mass region between 519 MeV and 973 MeV. This new limit has been combined with the published result obtained investigating the hypothesis of the dark photon decaying into hadrons in e+e−→π+π−γISR events. The combined 90% CL limit increases the sensitivity especially in the ρ–ω interference region and excludes ε2 greater than (13−2)×10−7. For dark photon masses greater than 600 MeV the combined limit is lower than 8 ×10−7 resulting more stringent than present constraints from other experiments.",
keywords = "Dark forces, ee Collisions, Gauge vector boson, Upper limits, SEARCH, DETECTOR, DARK PHOTON, E(+)E(-), U-GAMMA, e(+) e(-) Collisions, PHI-MESON DECAYS, VECTOR BOSON, TO-LEADING ORDER, KLOE EXPERIMENT, RADIATIVE RETURN",
author = "{The KLOE-2 Collaboration} and A. Anastasi and D. Babusci and M. Berlowski and C. Bloise and F. Bossi and P. Branchini and A. Budano and B. Cao and F. Ceradini and P. Ciambrone and F. Curciarello and E. Czerwi{\'n}ski and G. D'Agostini and E. Dan{\`e} and {De Leo}, V. and {De Lucia}, E. and {De Santis}, A. and {De Simone}, P. and {Di Cicco}, A. and {Di Domenico}, A. and D. Domenici and A. D'Uffizi and A. Fantini and G. Fantini and P. Fermani and S. Fiore and A. Gajos and P. Gauzzi and S. Giovannella and E. Graziani and Ivanov, {V. L.} and T. Johansson and X. Kang and D. Kisielewska-Kami{\'n}ska and Kozyrev, {E. A.} and W. Krzemien and A. Kupsc and Lukin, {P. A.} and G. Mandaglio and M. Martini and R. Messi and S. Miscetti and D. Moricciani and P. Moskal and A. Passeri and V. Patera and {Perez del Rio}, E. and N. Raha and P. Santangelo and Solodov, {E. P.}",
note = "Publisher Copyright: {\textcopyright} 2018 The Author(s)",
year = "2018",
month = sep,
day = "10",
doi = "10.1016/j.physletb.2018.08.012",
language = "English",
volume = "784",
pages = "336--341",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
issn = "0370-2693",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Combined limit on the production of a light gauge boson decaying into μ+μ− and π+π−

AU - The KLOE-2 Collaboration

AU - Anastasi, A.

AU - Babusci, D.

AU - Berlowski, M.

AU - Bloise, C.

AU - Bossi, F.

AU - Branchini, P.

AU - Budano, A.

AU - Cao, B.

AU - Ceradini, F.

AU - Ciambrone, P.

AU - Curciarello, F.

AU - Czerwiński, E.

AU - D'Agostini, G.

AU - Danè, E.

AU - De Leo, V.

AU - De Lucia, E.

AU - De Santis, A.

AU - De Simone, P.

AU - Di Cicco, A.

AU - Di Domenico, A.

AU - Domenici, D.

AU - D'Uffizi, A.

AU - Fantini, A.

AU - Fantini, G.

AU - Fermani, P.

AU - Fiore, S.

AU - Gajos, A.

AU - Gauzzi, P.

AU - Giovannella, S.

AU - Graziani, E.

AU - Ivanov, V. L.

AU - Johansson, T.

AU - Kang, X.

AU - Kisielewska-Kamińska, D.

AU - Kozyrev, E. A.

AU - Krzemien, W.

AU - Kupsc, A.

AU - Lukin, P. A.

AU - Mandaglio, G.

AU - Martini, M.

AU - Messi, R.

AU - Miscetti, S.

AU - Moricciani, D.

AU - Moskal, P.

AU - Passeri, A.

AU - Patera, V.

AU - Perez del Rio, E.

AU - Raha, N.

AU - Santangelo, P.

AU - Solodov, E. P.

N1 - Publisher Copyright: © 2018 The Author(s)

PY - 2018/9/10

Y1 - 2018/9/10

N2 - We searched for the μ+μ− decay of a light vector gauge boson, also known as dark photon, in the e+e−→μ+μ−γISR process by means of the Initial State Radiation (ISR) method. We used 1.93 fb−1 of data collected by the KLOE experiment at the DAΦNE ϕ-factory. No structures have been observed over the irreducible μ+μ− background. A 90% CL limit on the ratio ε2=α′/α between the dark coupling constant and the fine structure constant of 3×10−6–2×10−7 has been set in the dark photon mass region between 519 MeV and 973 MeV. This new limit has been combined with the published result obtained investigating the hypothesis of the dark photon decaying into hadrons in e+e−→π+π−γISR events. The combined 90% CL limit increases the sensitivity especially in the ρ–ω interference region and excludes ε2 greater than (13−2)×10−7. For dark photon masses greater than 600 MeV the combined limit is lower than 8 ×10−7 resulting more stringent than present constraints from other experiments.

AB - We searched for the μ+μ− decay of a light vector gauge boson, also known as dark photon, in the e+e−→μ+μ−γISR process by means of the Initial State Radiation (ISR) method. We used 1.93 fb−1 of data collected by the KLOE experiment at the DAΦNE ϕ-factory. No structures have been observed over the irreducible μ+μ− background. A 90% CL limit on the ratio ε2=α′/α between the dark coupling constant and the fine structure constant of 3×10−6–2×10−7 has been set in the dark photon mass region between 519 MeV and 973 MeV. This new limit has been combined with the published result obtained investigating the hypothesis of the dark photon decaying into hadrons in e+e−→π+π−γISR events. The combined 90% CL limit increases the sensitivity especially in the ρ–ω interference region and excludes ε2 greater than (13−2)×10−7. For dark photon masses greater than 600 MeV the combined limit is lower than 8 ×10−7 resulting more stringent than present constraints from other experiments.

KW - Dark forces

KW - ee Collisions

KW - Gauge vector boson

KW - Upper limits

KW - SEARCH

KW - DETECTOR

KW - DARK PHOTON

KW - E(+)E(-)

KW - U-GAMMA

KW - e(+) e(-) Collisions

KW - PHI-MESON DECAYS

KW - VECTOR BOSON

KW - TO-LEADING ORDER

KW - KLOE EXPERIMENT

KW - RADIATIVE RETURN

UR - http://www.scopus.com/inward/record.url?scp=85052117389&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2018.08.012

DO - 10.1016/j.physletb.2018.08.012

M3 - Article

AN - SCOPUS:85052117389

VL - 784

SP - 336

EP - 341

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

ER -

ID: 16238560