Mass composition of ultrahigh-energy cosmic rays with the Telescope Array Surface Detector data

R. U. Abbasi, M. Abe, T. Abu-Zayyad, M. Allen, R. Azuma, E. Barcikowski, J. W. Belz, D. R. Bergman, S. A. Blake, R. Cady, B. G. Cheon, J. Chiba, M. Chikawa, A. Di Matteo, T. Fujii, K. Fujita, M. Fukushima, G. Furlich, T. Goto, W. HanlonM. Hayashi, Y. Hayashi, N. Hayashida, K. Hibino, K. Honda, D. Ikeda, N. Inoue, T. Ishii, R. Ishimori, H. Ito, D. Ivanov, H. M. Jeong, S. Jeong, C. C.H. Jui, K. Kadota, F. Kakimoto, O. Kalashev, K. Kasahara, H. Kawai, S. Kawakami, S. Kawana, K. Kawata, E. Kido, H. B. Kim, J. H. Kim, J. H. Kim, S. Kishigami, S. Kitamura, Y. Kitamura, V. Kuzmin, M. Kuznetsov, Y. J. Kwon, K. H. Lee, B. Lubsandorzhiev, J. P. Lundquist, K. Machida, K. Martens, T. Matsuyama, J. N. Matthews, R. Mayta, M. Minamino, K. Mukai, I. Myers, K. Nagasawa, S. Nagataki, R. Nakamura, T. Nakamura, T. Nonaka, H. Oda, S. Ogio, J. Ogura, M. Ohnishi, H. Ohoka, T. Okuda, Y. Omura, M. Ono, R. Onogi, A. Oshima, S. Ozawa, I. H. Park, M. S. Piskunov, M. S. Pshirkov, J. Remington, D. C. Rodriguez, G. Rubtsov, D. Ryu, H. Sagawa, R. Sahara, K. Saito, Y. Saito, N. Sakaki, N. Sakurai, L. M. Scott, T. Seki, K. Sekino, P. D. Shah, F. Shibata, T. Shibata, H. Shimodaira, B. K. Shin, H. S. Shin, J. D. Smith, P. Sokolsky, B. T. Stokes, S. R. Stratton, T. A. Stroman, T. Suzawa, Y. Takagi, Y. Takahashi, M. Takamura, M. Takeda, R. Takeishi, A. Taketa, M. Takita, Y. Tameda, H. Tanaka, K. Tanaka, M. Tanaka, S. B. Thomas, G. B. Thomson, P. Tinyakov, I. Tkachev, H. Tokuno, T. Tomida, S. Troitsky, Y. Tsunesada, K. Tsutsumi, Y. Uchihori, S. Udo, F. Urban, T. Wong, K. Yada, M. Yamamoto, R. Yamane, H. Yamaoka, K. Yamazaki, J. Yang, K. Yashiro, Y. Yoneda, S. Yoshida, H. Yoshii, Y. Zhezher, Z. Zundel

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The results on ultrahigh-energy cosmic rays (UHECR) mass composition obtained with the Telescope Array surface detector are presented. The analysis employs the Boosted Decision tree (BDT) multivariate analysis built upon 14 observables related to both the properties of the shower front and the lateral distribution function. The multivariate classifier is trained with Monte-Carlo sets of events induced by the primary protons and iron. An average atomic mass of UHECR is presented for energies 1018.0-1020.0 eV. The average atomic mass of primary particles shows no significant energy dependence and corresponds to lnA = 2.0±0.1(stat.)±0.44(syst.). The result is compared to the mass composition obtained by the Telescope Array with Xmax technique along with the results of other experiments. Possible systematic errors of the method are discussed.

Original languageEnglish
Article number022001
JournalPhysical Review D
Volume99
Issue number2
DOIs
Publication statusPublished - 2019 Jan 15

Fingerprint

cosmic rays
telescopes
atomic weights
detectors
energy
classifiers
showers
systematic errors
distribution functions
iron
protons

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Abbasi, R. U., Abe, M., Abu-Zayyad, T., Allen, M., Azuma, R., Barcikowski, E., ... Zundel, Z. (2019). Mass composition of ultrahigh-energy cosmic rays with the Telescope Array Surface Detector data. Physical Review D, 99(2), [022001]. https://doi.org/10.1103/PhysRevD.99.022002
Abbasi, R. U. ; Abe, M. ; Abu-Zayyad, T. ; Allen, M. ; Azuma, R. ; Barcikowski, E. ; Belz, J. W. ; Bergman, D. R. ; Blake, S. A. ; Cady, R. ; Cheon, B. G. ; Chiba, J. ; Chikawa, M. ; Di Matteo, A. ; Fujii, T. ; Fujita, K. ; Fukushima, M. ; Furlich, G. ; Goto, T. ; Hanlon, W. ; Hayashi, M. ; Hayashi, Y. ; Hayashida, N. ; Hibino, K. ; Honda, K. ; Ikeda, D. ; Inoue, N. ; Ishii, T. ; Ishimori, R. ; Ito, H. ; Ivanov, D. ; Jeong, H. M. ; Jeong, S. ; Jui, C. C.H. ; Kadota, K. ; Kakimoto, F. ; Kalashev, O. ; Kasahara, K. ; Kawai, H. ; Kawakami, S. ; Kawana, S. ; Kawata, K. ; Kido, E. ; Kim, H. B. ; Kim, J. H. ; Kim, J. H. ; Kishigami, S. ; Kitamura, S. ; Kitamura, Y. ; Kuzmin, V. ; Kuznetsov, M. ; Kwon, Y. J. ; Lee, K. H. ; Lubsandorzhiev, B. ; Lundquist, J. P. ; Machida, K. ; Martens, K. ; Matsuyama, T. ; Matthews, J. N. ; Mayta, R. ; Minamino, M. ; Mukai, K. ; Myers, I. ; Nagasawa, K. ; Nagataki, S. ; Nakamura, R. ; Nakamura, T. ; Nonaka, T. ; Oda, H. ; Ogio, S. ; Ogura, J. ; Ohnishi, M. ; Ohoka, H. ; Okuda, T. ; Omura, Y. ; Ono, M. ; Onogi, R. ; Oshima, A. ; Ozawa, S. ; Park, I. H. ; Piskunov, M. S. ; Pshirkov, M. S. ; Remington, J. ; Rodriguez, D. C. ; Rubtsov, G. ; Ryu, D. ; Sagawa, H. ; Sahara, R. ; Saito, K. ; Saito, Y. ; Sakaki, N. ; Sakurai, N. ; Scott, L. M. ; Seki, T. ; Sekino, K. ; Shah, P. D. ; Shibata, F. ; Shibata, T. ; Shimodaira, H. ; Shin, B. K. ; Shin, H. S. ; Smith, J. D. ; Sokolsky, P. ; Stokes, B. T. ; Stratton, S. R. ; Stroman, T. A. ; Suzawa, T. ; Takagi, Y. ; Takahashi, Y. ; Takamura, M. ; Takeda, M. ; Takeishi, R. ; Taketa, A. ; Takita, M. ; Tameda, Y. ; Tanaka, H. ; Tanaka, K. ; Tanaka, M. ; Thomas, S. B. ; Thomson, G. B. ; Tinyakov, P. ; Tkachev, I. ; Tokuno, H. ; Tomida, T. ; Troitsky, S. ; Tsunesada, Y. ; Tsutsumi, K. ; Uchihori, Y. ; Udo, S. ; Urban, F. ; Wong, T. ; Yada, K. ; Yamamoto, M. ; Yamane, R. ; Yamaoka, H. ; Yamazaki, K. ; Yang, J. ; Yashiro, K. ; Yoneda, Y. ; Yoshida, S. ; Yoshii, H. ; Zhezher, Y. ; Zundel, Z. / Mass composition of ultrahigh-energy cosmic rays with the Telescope Array Surface Detector data. In: Physical Review D. 2019 ; Vol. 99, No. 2.
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abstract = "The results on ultrahigh-energy cosmic rays (UHECR) mass composition obtained with the Telescope Array surface detector are presented. The analysis employs the Boosted Decision tree (BDT) multivariate analysis built upon 14 observables related to both the properties of the shower front and the lateral distribution function. The multivariate classifier is trained with Monte-Carlo sets of events induced by the primary protons and iron. An average atomic mass of UHECR is presented for energies 1018.0-1020.0 eV. The average atomic mass of primary particles shows no significant energy dependence and corresponds to lnA = 2.0±0.1(stat.)±0.44(syst.). The result is compared to the mass composition obtained by the Telescope Array with Xmax technique along with the results of other experiments. Possible systematic errors of the method are discussed.",
author = "Abbasi, {R. U.} and M. Abe and T. Abu-Zayyad and M. Allen and R. Azuma and E. Barcikowski and Belz, {J. W.} and Bergman, {D. R.} and Blake, {S. A.} and R. Cady and Cheon, {B. G.} and J. Chiba and M. Chikawa and {Di Matteo}, A. and T. Fujii and K. Fujita and M. Fukushima and G. Furlich and T. Goto and W. Hanlon and M. Hayashi and Y. Hayashi and N. Hayashida and K. Hibino and K. Honda and D. Ikeda and N. Inoue and T. Ishii and R. Ishimori and H. Ito and D. Ivanov and Jeong, {H. M.} and S. Jeong and Jui, {C. C.H.} and K. Kadota and F. Kakimoto and O. Kalashev and K. Kasahara and H. Kawai and S. Kawakami and S. Kawana and K. Kawata and E. Kido and Kim, {H. B.} and Kim, {J. H.} and Kim, {J. H.} and S. Kishigami and S. Kitamura and Y. Kitamura and V. Kuzmin and M. Kuznetsov and Kwon, {Y. J.} and Lee, {K. H.} and B. Lubsandorzhiev and Lundquist, {J. P.} and K. Machida and K. Martens and T. Matsuyama and Matthews, {J. N.} and R. Mayta and M. Minamino and K. Mukai and I. Myers and K. Nagasawa and S. Nagataki and R. Nakamura and T. Nakamura and T. Nonaka and H. Oda and S. Ogio and J. Ogura and M. Ohnishi and H. Ohoka and T. Okuda and Y. Omura and M. Ono and R. Onogi and A. Oshima and S. Ozawa and Park, {I. H.} and Piskunov, {M. S.} and Pshirkov, {M. S.} and J. Remington and Rodriguez, {D. C.} and G. Rubtsov and D. Ryu and H. Sagawa and R. Sahara and K. Saito and Y. Saito and N. Sakaki and N. Sakurai and Scott, {L. M.} and T. Seki and K. Sekino and Shah, {P. D.} and F. Shibata and T. Shibata and H. Shimodaira and Shin, {B. K.} and Shin, {H. S.} and Smith, {J. D.} and P. Sokolsky and Stokes, {B. T.} and Stratton, {S. R.} and Stroman, {T. A.} and T. Suzawa and Y. Takagi and Y. Takahashi and M. Takamura and M. Takeda and R. Takeishi and A. Taketa and M. Takita and Y. Tameda and H. Tanaka and K. Tanaka and M. Tanaka and Thomas, {S. B.} and Thomson, {G. B.} and P. Tinyakov and I. Tkachev and H. Tokuno and T. Tomida and S. Troitsky and Y. Tsunesada and K. Tsutsumi and Y. Uchihori and S. Udo and F. Urban and T. Wong and K. Yada and M. Yamamoto and R. Yamane and H. Yamaoka and K. Yamazaki and J. Yang and K. Yashiro and Y. Yoneda and S. Yoshida and H. Yoshii and Y. Zhezher and Z. Zundel",
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Abbasi, RU, Abe, M, Abu-Zayyad, T, Allen, M, Azuma, R, Barcikowski, E, Belz, JW, Bergman, DR, Blake, SA, Cady, R, Cheon, BG, Chiba, J, Chikawa, M, Di Matteo, A, Fujii, T, Fujita, K, Fukushima, M, Furlich, G, Goto, T, Hanlon, W, Hayashi, M, Hayashi, Y, Hayashida, N, Hibino, K, Honda, K, Ikeda, D, Inoue, N, Ishii, T, Ishimori, R, Ito, H, Ivanov, D, Jeong, HM, Jeong, S, Jui, CCH, Kadota, K, Kakimoto, F, Kalashev, O, Kasahara, K, Kawai, H, Kawakami, S, Kawana, S, Kawata, K, Kido, E, Kim, HB, Kim, JH, Kim, JH, Kishigami, S, Kitamura, S, Kitamura, Y, Kuzmin, V, Kuznetsov, M, Kwon, YJ, Lee, KH, Lubsandorzhiev, B, Lundquist, JP, Machida, K, Martens, K, Matsuyama, T, Matthews, JN, Mayta, R, Minamino, M, Mukai, K, Myers, I, Nagasawa, K, Nagataki, S, Nakamura, R, Nakamura, T, Nonaka, T, Oda, H, Ogio, S, Ogura, J, Ohnishi, M, Ohoka, H, Okuda, T, Omura, Y, Ono, M, Onogi, R, Oshima, A, Ozawa, S, Park, IH, Piskunov, MS, Pshirkov, MS, Remington, J, Rodriguez, DC, Rubtsov, G, Ryu, D, Sagawa, H, Sahara, R, Saito, K, Saito, Y, Sakaki, N, Sakurai, N, Scott, LM, Seki, T, Sekino, K, Shah, PD, Shibata, F, Shibata, T, Shimodaira, H, Shin, BK, Shin, HS, Smith, JD, Sokolsky, P, Stokes, BT, Stratton, SR, Stroman, TA, Suzawa, T, Takagi, Y, Takahashi, Y, Takamura, M, Takeda, M, Takeishi, R, Taketa, A, Takita, M, Tameda, Y, Tanaka, H, Tanaka, K, Tanaka, M, Thomas, SB, Thomson, GB, Tinyakov, P, Tkachev, I, Tokuno, H, Tomida, T, Troitsky, S, Tsunesada, Y, Tsutsumi, K, Uchihori, Y, Udo, S, Urban, F, Wong, T, Yada, K, Yamamoto, M, Yamane, R, Yamaoka, H, Yamazaki, K, Yang, J, Yashiro, K, Yoneda, Y, Yoshida, S, Yoshii, H, Zhezher, Y & Zundel, Z 2019, 'Mass composition of ultrahigh-energy cosmic rays with the Telescope Array Surface Detector data', Physical Review D, vol. 99, no. 2, 022001. https://doi.org/10.1103/PhysRevD.99.022002

Mass composition of ultrahigh-energy cosmic rays with the Telescope Array Surface Detector data. / Abbasi, R. U.; Abe, M.; Abu-Zayyad, T.; Allen, M.; Azuma, R.; Barcikowski, E.; Belz, J. W.; Bergman, D. R.; Blake, S. A.; Cady, R.; Cheon, B. G.; Chiba, J.; Chikawa, M.; Di Matteo, A.; Fujii, T.; Fujita, K.; Fukushima, M.; Furlich, G.; Goto, T.; Hanlon, W.; Hayashi, M.; Hayashi, Y.; Hayashida, N.; Hibino, K.; Honda, K.; Ikeda, D.; Inoue, N.; Ishii, T.; Ishimori, R.; Ito, H.; Ivanov, D.; Jeong, H. M.; Jeong, S.; Jui, C. C.H.; Kadota, K.; Kakimoto, F.; Kalashev, O.; Kasahara, K.; Kawai, H.; Kawakami, S.; Kawana, S.; Kawata, K.; Kido, E.; Kim, H. B.; Kim, J. H.; Kim, J. H.; Kishigami, S.; Kitamura, S.; Kitamura, Y.; Kuzmin, V.; Kuznetsov, M.; Kwon, Y. J.; Lee, K. H.; Lubsandorzhiev, B.; Lundquist, J. P.; Machida, K.; Martens, K.; Matsuyama, T.; Matthews, J. N.; Mayta, R.; Minamino, M.; Mukai, K.; Myers, I.; Nagasawa, K.; Nagataki, S.; Nakamura, R.; Nakamura, T.; Nonaka, T.; Oda, H.; Ogio, S.; Ogura, J.; Ohnishi, M.; Ohoka, H.; Okuda, T.; Omura, Y.; Ono, M.; Onogi, R.; Oshima, A.; Ozawa, S.; Park, I. H.; Piskunov, M. S.; Pshirkov, M. S.; Remington, J.; Rodriguez, D. C.; Rubtsov, G.; Ryu, D.; Sagawa, H.; Sahara, R.; Saito, K.; Saito, Y.; Sakaki, N.; Sakurai, N.; Scott, L. M.; Seki, T.; Sekino, K.; Shah, P. D.; Shibata, F.; Shibata, T.; Shimodaira, H.; Shin, B. K.; Shin, H. S.; Smith, J. D.; Sokolsky, P.; Stokes, B. T.; Stratton, S. R.; Stroman, T. A.; Suzawa, T.; Takagi, Y.; Takahashi, Y.; Takamura, M.; Takeda, M.; Takeishi, R.; Taketa, A.; Takita, M.; Tameda, Y.; Tanaka, H.; Tanaka, K.; Tanaka, M.; Thomas, S. B.; Thomson, G. B.; Tinyakov, P.; Tkachev, I.; Tokuno, H.; Tomida, T.; Troitsky, S.; Tsunesada, Y.; Tsutsumi, K.; Uchihori, Y.; Udo, S.; Urban, F.; Wong, T.; Yada, K.; Yamamoto, M.; Yamane, R.; Yamaoka, H.; Yamazaki, K.; Yang, J.; Yashiro, K.; Yoneda, Y.; Yoshida, S.; Yoshii, H.; Zhezher, Y.; Zundel, Z.

In: Physical Review D, Vol. 99, No. 2, 022001, 15.01.2019.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Mass composition of ultrahigh-energy cosmic rays with the Telescope Array Surface Detector data

AU - Abbasi, R. U.

AU - Abe, M.

AU - Abu-Zayyad, T.

AU - Allen, M.

AU - Azuma, R.

AU - Barcikowski, E.

AU - Belz, J. W.

AU - Bergman, D. R.

AU - Blake, S. A.

AU - Cady, R.

AU - Cheon, B. G.

AU - Chiba, J.

AU - Chikawa, M.

AU - Di Matteo, A.

AU - Fujii, T.

AU - Fujita, K.

AU - Fukushima, M.

AU - Furlich, G.

AU - Goto, T.

AU - Hanlon, W.

AU - Hayashi, M.

AU - Hayashi, Y.

AU - Hayashida, N.

AU - Hibino, K.

AU - Honda, K.

AU - Ikeda, D.

AU - Inoue, N.

AU - Ishii, T.

AU - Ishimori, R.

AU - Ito, H.

AU - Ivanov, D.

AU - Jeong, H. M.

AU - Jeong, S.

AU - Jui, C. C.H.

AU - Kadota, K.

AU - Kakimoto, F.

AU - Kalashev, O.

AU - Kasahara, K.

AU - Kawai, H.

AU - Kawakami, S.

AU - Kawana, S.

AU - Kawata, K.

AU - Kido, E.

AU - Kim, H. B.

AU - Kim, J. H.

AU - Kim, J. H.

AU - Kishigami, S.

AU - Kitamura, S.

AU - Kitamura, Y.

AU - Kuzmin, V.

AU - Kuznetsov, M.

AU - Kwon, Y. J.

AU - Lee, K. H.

AU - Lubsandorzhiev, B.

AU - Lundquist, J. P.

AU - Machida, K.

AU - Martens, K.

AU - Matsuyama, T.

AU - Matthews, J. N.

AU - Mayta, R.

AU - Minamino, M.

AU - Mukai, K.

AU - Myers, I.

AU - Nagasawa, K.

AU - Nagataki, S.

AU - Nakamura, R.

AU - Nakamura, T.

AU - Nonaka, T.

AU - Oda, H.

AU - Ogio, S.

AU - Ogura, J.

AU - Ohnishi, M.

AU - Ohoka, H.

AU - Okuda, T.

AU - Omura, Y.

AU - Ono, M.

AU - Onogi, R.

AU - Oshima, A.

AU - Ozawa, S.

AU - Park, I. H.

AU - Piskunov, M. S.

AU - Pshirkov, M. S.

AU - Remington, J.

AU - Rodriguez, D. C.

AU - Rubtsov, G.

AU - Ryu, D.

AU - Sagawa, H.

AU - Sahara, R.

AU - Saito, K.

AU - Saito, Y.

AU - Sakaki, N.

AU - Sakurai, N.

AU - Scott, L. M.

AU - Seki, T.

AU - Sekino, K.

AU - Shah, P. D.

AU - Shibata, F.

AU - Shibata, T.

AU - Shimodaira, H.

AU - Shin, B. K.

AU - Shin, H. S.

AU - Smith, J. D.

AU - Sokolsky, P.

AU - Stokes, B. T.

AU - Stratton, S. R.

AU - Stroman, T. A.

AU - Suzawa, T.

AU - Takagi, Y.

AU - Takahashi, Y.

AU - Takamura, M.

AU - Takeda, M.

AU - Takeishi, R.

AU - Taketa, A.

AU - Takita, M.

AU - Tameda, Y.

AU - Tanaka, H.

AU - Tanaka, K.

AU - Tanaka, M.

AU - Thomas, S. B.

AU - Thomson, G. B.

AU - Tinyakov, P.

AU - Tkachev, I.

AU - Tokuno, H.

AU - Tomida, T.

AU - Troitsky, S.

AU - Tsunesada, Y.

AU - Tsutsumi, K.

AU - Uchihori, Y.

AU - Udo, S.

AU - Urban, F.

AU - Wong, T.

AU - Yada, K.

AU - Yamamoto, M.

AU - Yamane, R.

AU - Yamaoka, H.

AU - Yamazaki, K.

AU - Yang, J.

AU - Yashiro, K.

AU - Yoneda, Y.

AU - Yoshida, S.

AU - Yoshii, H.

AU - Zhezher, Y.

AU - Zundel, Z.

PY - 2019/1/15

Y1 - 2019/1/15

N2 - The results on ultrahigh-energy cosmic rays (UHECR) mass composition obtained with the Telescope Array surface detector are presented. The analysis employs the Boosted Decision tree (BDT) multivariate analysis built upon 14 observables related to both the properties of the shower front and the lateral distribution function. The multivariate classifier is trained with Monte-Carlo sets of events induced by the primary protons and iron. An average atomic mass of UHECR is presented for energies 1018.0-1020.0 eV. The average atomic mass of primary particles shows no significant energy dependence and corresponds to lnA = 2.0±0.1(stat.)±0.44(syst.). The result is compared to the mass composition obtained by the Telescope Array with Xmax technique along with the results of other experiments. Possible systematic errors of the method are discussed.

AB - The results on ultrahigh-energy cosmic rays (UHECR) mass composition obtained with the Telescope Array surface detector are presented. The analysis employs the Boosted Decision tree (BDT) multivariate analysis built upon 14 observables related to both the properties of the shower front and the lateral distribution function. The multivariate classifier is trained with Monte-Carlo sets of events induced by the primary protons and iron. An average atomic mass of UHECR is presented for energies 1018.0-1020.0 eV. The average atomic mass of primary particles shows no significant energy dependence and corresponds to lnA = 2.0±0.1(stat.)±0.44(syst.). The result is compared to the mass composition obtained by the Telescope Array with Xmax technique along with the results of other experiments. Possible systematic errors of the method are discussed.

UR - http://www.scopus.com/inward/record.url?scp=85060842808&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85060842808&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.99.022002

DO - 10.1103/PhysRevD.99.022002

M3 - Article

AN - SCOPUS:85060842808

VL - 99

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 2

M1 - 022001

ER -