Observation of New Properties of Secondary Cosmic Rays Lithium, Beryllium, and Boron by the Alpha Magnetic Spectrometer on the International Space Station

Download
2018-01-11
Aguilar, M.
Cavasonza, L. Ali
Ambrosi, G.
Arruda, L.
Attig, N.
Aupetit, S.
Azzarello, P.
Bachlechner, A.
Barao, F.
Barrau, A.
Barrin, L.
Bartoloni, A.
Basara, L.
Basegmez-du Pree, S.
Battarbee, M.
Battiston, R.
Becker, U.
Behlmann, M.
Beischer, B.
Berdugo, J.
Bertucci, B.
Bindel, K. F.
Bindi, V.
de Boer, W.
Bollweg, K.
Bonnivard, V.
Borgia, B.
Boschini, M. J.
Bourquin, M.
Bueno, E. F.
Burger, J.
Burger, W. J.
Cadoux, F.
Cai, X. D.
Capell, M.
Caroff, S.
Casaus, J.
Castellini, G.
Cervelli, F.
Chae, M. J.
Chang, Y. H.
Chen, A. I.
Chen, G. M.
Chen, H. S.
Cheng, L.
Chou, H. Y.
Choumilov, E.
Choutko, V.
Chung, C. H.
Clark, C.
Clavero, R.
Coignet, G.
Consolandi, C.
Contin, A.
Corti, C.
Creus, W.
Crispoltoni, M.
Cui, Z.
Dadzie, K.
Dai, Y. M.
Datta, A.
Delgado, C.
Della Torre, S.
Demirköz, Melahat Bilge
Derome, L.
Di Falco, S.
Dimiccoli, F.
Diaz, C.
von Doetinchem, P.
Dong, F.
Donnini, F.
Duranti, M.
D'Urso, D.
Egorov, A.
Eline, A.
Eronen, T.
Feng, J.
Fiandrini, E.
Fisher, P.
Formato, V.
Galaktionov, Y.
Gallucci, G.
Garcia-Lopez, R. J.
Gargiulo, C.
Gast, H.
Gebauer, I.
Gervasi, M.
Ghelfi, A.
Giovacchini, F.
Gomez-Coral, D. M.
Gong, J.
Goy, C.
Grabski, V.
Grandi, D.
Graziani, M.
Guo, K. H.
Haino, S.
Han, K. C.
He, Z. H.
Heil, M.
Hsieh, T. H.
Huang, H.
Huang, Z. C.
Huh, C.
Incagli, M.
Ionica, M.
Jang, W. Y.
Jia, Yi
Jinchi, H.
Kang, S. C.
Kanishev, K.
Khiali, B.
Kim, G. N.
Kim, K. S.
Kirn, Th.
Konak, C.
Kounina, O.
Kounine, A.
Koutsenko, V.
Kulemzin, A.
La Vacca, G.
Laudi, E.
Laurenti, G.
Lazzizzera, I.
Lebedev, A.
Lee, H. T.
Lee, S. C.
Leluc, C.
Li, H. S.
Li, J. Q.
Li, Q.
Li, T. X.
Li, Y.
Li, Z. H.
Li, Z. Y.
Lim, S.
Lin, C. H.
Lipari, P.
Lippert, T.
Liu, D.
Liu, Hu
Lordello, V. D.
Lu, S. Q.
Lu, Y. S.
Luebelsmeyer, K.
Luo, F.
Luo, J. Z.
Lyu, S. S.
Machate, F.
Mana, C.
Marin, J.
Martin, T.
Martinez, G.
Masi, N.
Maurin, D.
Menchaca-Rocha, A.
Meng, Q.
Mikuni, V. M.
Mo, D. C.
Mott, P.
Nelson, T.
Ni, J. Q.
Nikonov, N.
Nozzoli, F.
Oliva, A.
Orcinha, M.
Palermo, M.
Palmonari, F.
Palomares, C.
Paniccia, M.
Pauluzzi, M.
Pensotti, S.
Perrina, C.
Phan, H. D.
Picot-Clemente, N.
Pilo, F.
Pizzolotto, C.
Plyaskin, V.
Pohl, M.
Poireau, V.
Quadrani, L.
Qi, X. M.
Qin, X.
Qu, Z. Y.
Raeihae, T.
Rancoita, P. G.
Rapin, D.
Ricol, J. S.
Rosier-Lees, S.
Rozhkov, A.
Rozza, D.
Sagdeev, R.
Schael, S.
Schmidt, S. M.
von Dratzig, A. Schulz
Schwering, G.
Seo, E. S.
Shan, B. S.
Shi, J. Y.
Siedenburg, T.
Son, D.
Song, J. W.
Tacconi, M.
Tang, X. W.
Tang, Z. C.
Tescaro, D.
Ting, Samuel C. C.
Ting, S. M.
Tomassetti, N.
Torsti, J.
Turkoglu, C.
Urban, T.
Vagelli, V.
Valente, E.
Valtonen, E.
Vazquez Acosta, M.
Vecchi, M.
Velasco, M.
Vialle, J. P.
Vitale, V.
Wang, L. Q.
Wang, N. H.
Wang, Q. L.
Wang, X.
Wang, X. Q.
Wang, Z. X.
Wei, C. C.
Weng, Z. L.
Whitman, K.
Wu, H.
Wu, X.
Xiong, R. Q.
Xu, W.
Yan, Q.
Yang, J.
Yang, M.
Yang, Y.
Yi, H.
Yu, Y. J.
Yu, Z. Q.
Zannoni, M.
Zeissler, S.
Zhang, C.
Zhang, F.
Zhang, J.
Zhang, J. H.
Zhang, S. W.
Zhang, Z.
Zheng, Z. M.
Zhuang, H. L.
Zhukov, V.
Zichichi, A.
Zimmermann, N.
Zuccon, P.
We report on the observation of new properties of secondary cosmic rays Li, Be, and B measured in the rigidity (momentum per unit charge) range 1.9 GV to 3.3 TV with a total of 5.4 x 10(6) nuclei collected by AMS during the first five years of operation aboard the International Space Station. The Li and B fluxes have an identical rigidity dependence above 7 GV and all three fluxes have an identical rigidity dependence above 30 GV with the Li/Be flux ratio of 2.0 +/- 0.1. The three fluxes deviate from a single power law above 200 GV in an identical way. This behavior of secondary cosmic rays has also been observed in the AMS measurement of primary cosmic rays He, C, and O but the rigidity dependences of primary cosmic rays and of secondary cosmic rays are distinctly different. In particular, above 200 GV, the secondary cosmic rays harden more than the primary cosmic rays.
PHYSICAL REVIEW LETTERS

Suggestions

Observation of the Identical Rigidity Dependence of He, C, and O Cosmic Rays at High Rigidities by the Alpha Magnetic Spectrometer on the International Space Station
Aguilar, M.; et. al. (American Physical Society (APS), 2017-12-18)
We report the observation of new properties of primary cosmic rays He, C, and O measured in the rigidity (momentum/charge) range 2 GV to 3 TV with 90 x 10(6) helium, 8.4 x 10(6) carbon, and 7.0 x 10(6) oxygen nuclei collected by the Alpha Magnetic Spectrometer ( AMS) during the first five years of operation. Above 60 GV, these three spectra have identical rigidity dependence. They all deviate from a single power law above 200 GV and harden in an identical way.
Measurement of the Top Quark Pair Production Cross Section in Proton-Proton Collisions at root s=13 TeV
Khachatryan, V.; et. al. (American Physical Society (APS), 2016-02-01)
The top quark pair production cross section is measured for the first time in proton-proton collisions at root s = 13 TeV by the CMS experiment at the CERN LHC, using data corresponding to an integrated luminosity of 43 pb(-1). The measurement is performed by analyzing events with at least one electron and one muon of opposite charge, and at least two jets. The measured cross section is 746 +/- 58(stat) +/- 53(syst) +/- 36(lumi) pb, in agreement with the expectation from the standard model.
Observation of Top Quark Production in Proton-Nucleus Collisions
Sirunyan, A. M.; et. al. (American Physical Society (APS), 2017-12-01)
The first observation of top quark production in proton-nucleus collisions is reported using proton-lead data collected by the CMS experiment at the CERN LHC at a nucleon-nucleon center-of-mass energy of root(S)(NN) = 8.16 TeV. The measurement is performed using events with exactly one isolated electron or muon candidate and at least four jets. The data sample corresponds to an integrated luminosity of 174 nb(-1). The significance of the tt signal against the background-only hypothesis is above 5 standard d...
Properties of Neon, Magnesium, and Silicon Primary Cosmic Rays Results from the Alpha Magnetic Spectrometer
Aguilar, M.; et. al. (American Physical Society (APS), 2020-05-29)
We report the observation of new properties of primary cosmic rays, neon (Ne), magnesium (Mg), and silicon (Si), measured in the rigidity range 2.15 GV to 3.0 TV with 1.8 x 10(6) Ne, 2.2 x 10(6) Mg, and 1.6 x 10(6) Si nuclei collected by the Alpha Magnetic Spectrometer experiment on the International Space Station. The Ne and Mg spectra have identical rigidity dependence above 3.65 GV. The three spectra have identical rigidity dependence above 86.5 GV, deviate from a single power law above 200 GV, and harde...
Measurement of charm production in neutrino charged-current interactions
Kayis-Topaksu, A.; et. al. (IOP Publishing, 2011-09-01)
The nuclear emulsion target of the CHORUS detector was exposed to the wide-band neutrino beam of the CERN SPS of 27 GeV average neutrino energy from 1994 to 1997. In total, about 100 000 charged-current (CC) neutrino interactions with at least one identified muon were located in the emulsion target and fully reconstructed, using newly developed automated scanning systems. Charmed particles were searched for by a program recognizing particle decays. The observation of the decay in nuclear emulsion makes it p...
Citation Formats
M. Aguilar et al., “Observation of New Properties of Secondary Cosmic Rays Lithium, Beryllium, and Boron by the Alpha Magnetic Spectrometer on the International Space Station,” PHYSICAL REVIEW LETTERS, pp. 0–0, 2018, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/52294.