Cross-section measurement of two-photon in-flight annihilation of positrons at p s=20 MeV with the PADME detector

被引：2

作者：

Bossi, F. ^{[1
]}

Branchini, P. ^{[2
]}

Buonomo, B.

Capirossi, V. ^{[3
,4
]}

Caricato, A. P. ^{[5
,6
]}

Chiodini, G. ^{[5
]}

De Sangro, R. ^{[1
]}

Di Giulio, C.

Domenici, D. ^{[1
]}

Ferrarotto, F. ^{[7
]}

Finocchiaro, G. ^{[1
]}

Foggetta, L. G. ^{[1
]}

Frankenthal, A. ^{[8
]}

Garattini, M. ^{[1
]}

Georgiev, G. ^{[9
,10
]}

Giacchino, F. ^{[1
,12
]}

Gianotti, P. ^{[1
]}

Ivanov, S. ^{[10
]}

Ivanov, Sv.

Kozhuharov, V. ^{[1
,10
]}

Leonardi, E.

Long, E. ^{[11
]}

Martino, M. ^{[5
,6
]}

Oceano, I. ^{[5
,6
]}

Oliva, F. ^{[5
,6
,13
]}

Organtini, G. C. ^{[7
]}

Pinna, F.

Piperno, G. ^{[11
]}

Raggi, M. ^{[7
]}

Sarra, I. ^{[1
]}

Simeonov, R.

Spadaro, T. ^{[1
]}

Spagnolo, S. ^{[5
,6
]}

Spiriti, E. ^{[1
]}

Tagnani, D. ^{[2
]}

Taruggi, C. ^{[1
]}

Valente, P. ^{[7
]}

Vilucchi, E. ^{[5
]}

机构：

[1] Ist Nazl Fis Nucl, Lab Nazl Frascati, Via E Fermi 54, I-00044 Frascati, Italy

[2] Ist Nazl Fis Nucl, Sez Roma 3, Via Vasca Navale 84, I-00146 Rome, Italy

[3] DISAT Politecn Torino, Cso Duca Abruzzi 24, I-10129 Turin, Italy

[4] Ist Nazl Fis Nucl, Sez Torino, Cso Duca Abruzzi 24, I-10129 Turin, Italy

[5] Ist Nazl Fis Nucl, Sez Lecce, Via Prov Arnesano, I-73100 Lecce, Italy

[6] Salento Univ, Dipartimento Matemat & Fis, Via Prov Arnesano, I-73100 Lecce, Italy

[7] Ist Nazl Fis Nucl, Sez Roma 1, Ple A Moro 2, I-00185 Rome, Italy

[8] Princeton Univ, Phys Dept, Washington Rd, Princeton, NJ 08540 USA

[9] INRNE Bulgarian Acad Sci, 72 Tsarigradsko Shosse Blvd, Sofia 1784, Bulgaria

[10] Sofia Univ St Kl Ohridski, Fac Phys, 5J Bourchier Blvd, Sofia 1164, Scotland

[11] Sapienza Univ, Dipartimento Fis, Ple A Moro 2, I-00185 Rome, Italy

[12] INFN, Sez Roma 2, Via Ric Scientif 1, Rome, Italy

[13] Edin burgh Univ, Sch Phys & Astron, Edinburgh, Midlothian, Scotland

来源：

PHYSICAL REVIEW D | 2023年 / 107卷 / 01期

关键词：

D O I：

10.1103/PhysRevD.107.012008

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A measurement of the inclusive cross section of in-flight electron-positron annihilation to photons, e+e- -> gamma gamma, is presented using the PADME detector at the Laboratori Nazionali di Frascati. A beam of 430 MeV positrons, corresponding to a center-of-mass energy of 20 MeV, strikes a thin diamond target. The two photons produced in the interaction are detected by an electromagnetic calorimeter made of BGO crystals. The measurement is the first based on direct detection of the photon pair and one of the most precise for positron energies below 1 GeV. It represents an intermediate step in the ultimate PADME goal of searching for dark sector particles and mediators weakly coupled to photons and electrons, with masses ranging from 1 to 20 MeV. The final value, sigma e+e-->gamma gamma = (1.977 +/- 0.018(stat) +/- 0.119(syst)) mb, agrees with next-to-leading-order QED predictions within the 6% experimental uncertainty.

引用

页数：11

共 50 条

[41] Structure property correlations in alcohols through two-photon absorption cross-section measurements
Nag, Amit
Singh, Sherdeep
Goswami, Debabrata
CHEMICAL PHYSICS LETTERS, 2006, 430 (4-6) : 420 - 423
[42] Theoretical study on perylene tetracarboxylic derivatives with large two-photon absorption cross-section
Zhao Yang
Ren Ai-Min
Zhang Xiang-Biao
Feng Ji-Kang
ACTA CHIMICA SINICA, 2008, 66 (01) : 15 - 22
[43] Theoretical and experimental study of the 6S-8S two-photon absorption cross-section in cesium atoms
Nunez, Michael Caracas
Gonzalez, Miguel A.
Portela, Mayerlin Nunez
OPTICS EXPRESS, 2023, 31 (20) : 31749 - 31759
[44] Attachment of Different Donor Groups to a Cryptand for Modulation of Two-Photon Absorption Cross-Section
Jana, Atanu
Jang, So Young
Shin, Jae-Yoon
De, Arijit Kumar
Goswami, Debabrata
Kim, Dongho
Bharadwaj, Parimal K.
CHEMISTRY-A EUROPEAN JOURNAL, 2008, 14 (34) : 10628 - 10638
[45] A measurement of the dijet cross section in two-photon collisions at LEP2
Masík, J
PHOTON 2001, 2002, : 67 - 70
[46] Measurement of the two-photon absorption cross section by means of femtosecond thermal lensing
Rodriguez, Luis
Chiesa, Matteo
APPLIED OPTICS, 2011, 50 (19) : 3240 - 3245
[47] Measurement of forward photon production cross-section in proton-proton collisions at √s=13 TeV with the LHCf detector
Adriani, O.
Berti, E.
Bonechi, L.
Bongi, M.
D'Alessandro, R.
Haguenauer, M.
Itow, Y.
Iwata, T.
Kasahara, K.
Makino, Y.
Masuda, K.
Matsubayashi, E.
Menjo, H.
Muraki, Y.
Papini, R.
Ricciarini, S.
Sako, T.
Sakurai, N.
Shinoda, M.
Suzuki, T.
Tamura, T.
Tiberio, A.
Torii, S.
Tricomi, A.
Turner, W. C.
Ueno, M.
Zhou, Q. D.
PHYSICS LETTERS B, 2018, 780 : 233 - 239
[48] Role of Polymethinic Chain Substitution on the Two-Photon Absorption Cross-section of Heptamethine Cyanine Dyes
Guarin, Cesar A.
Guillermo Mendoza-Luna, Luis
Galicia-Lopez, Juan F.
Haro-Poniatowski, Emmanuel
Alejandro Diaz-Ponce, Javier
Luis Hernandez-Pozos, Jose
CHEMISTRYSELECT, 2023, 8 (19):
[49] Determination of Two-Photon Absorption Cross-Section of Noble Gases for Calibration of Laser Spectroscopic Techniques
de la Rosa, M. I.
Perez, C.
Grutzmacher, K.
Fuentes, L. M.
SPECTRAL LINE SHAPES VOL 15, 2008, 1058 : 18 - 20
[50] A single-shot approach for measuring two-photon action cross-section of fluorescent markers
Shi, Kebin
Heikal, Ahmed A.
Liu, Zhiwen
OPTICS EXPRESS, 2006, 14 (19) : 8722 - 8727

← 1 2 3 4 5 →