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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2503.16694 |
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| _version_ | 1866909722501709824 |
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| author | Zeng, J. Aramaki, T. Aoyama, K. Arai, S. Arai, S. Asaadi, J. Bamba, A. Cannady, N. Coppi, P. De Nolfo, G. Errando, M. Fabris, L. Fujiwara, T. Fukazawa, Y. Ghosh, P. Hagino, K. Hakamata, T. Hiroshima, N. Ichihashi, M. Ichinohe, Y. Inoue, Y. Ishikawa, K. Ishiwata, K. Iwata, T. Karagiorgi, G. Kato, T. Kawamura, H. Khangulyan, D. Krizmanic, J. LeyVa, J. Malige, A. Mitchell, J. G. Mitchell, J. W. Mukherjee, R. Nakajima, R. Nakazawa, K. Odaka, H. Okuma, K. Perez, K. Poudyal, N. Safa, I. Sakai, K. Sasaki, M. Seligman, W. Sensenig, J. Shirahama, K. Shiraishi, T. Smith, S. Suda, Y. Suraj, A. Takahashi, H. Takashima, S. Tamba, T. Tanaka, M. Tandon, S. Tatsumi, R. Tomsick, J. Tsuji, N. Uchida, Y. Utsumi, Y. Watanabe, S. Yano, Y. Yawata, K. Yoneda, H. Yorita, K. Yoshimoto, M. |
| author_facet | Zeng, J. Aramaki, T. Aoyama, K. Arai, S. Arai, S. Asaadi, J. Bamba, A. Cannady, N. Coppi, P. De Nolfo, G. Errando, M. Fabris, L. Fujiwara, T. Fukazawa, Y. Ghosh, P. Hagino, K. Hakamata, T. Hiroshima, N. Ichihashi, M. Ichinohe, Y. Inoue, Y. Ishikawa, K. Ishiwata, K. Iwata, T. Karagiorgi, G. Kato, T. Kawamura, H. Khangulyan, D. Krizmanic, J. LeyVa, J. Malige, A. Mitchell, J. G. Mitchell, J. W. Mukherjee, R. Nakajima, R. Nakazawa, K. Odaka, H. Okuma, K. Perez, K. Poudyal, N. Safa, I. Sakai, K. Sasaki, M. Seligman, W. Sensenig, J. Shirahama, K. Shiraishi, T. Smith, S. Suda, Y. Suraj, A. Takahashi, H. Takashima, S. Tamba, T. Tanaka, M. Tandon, S. Tatsumi, R. Tomsick, J. Tsuji, N. Uchida, Y. Utsumi, Y. Watanabe, S. Yano, Y. Yawata, K. Yoneda, H. Yorita, K. Yoshimoto, M. |
| contents | The Gamma-Ray and AntiMatter Survey (GRAMS) is a next-generation balloon/satellite mission utilizing a Liquid Argon Time Projection Chamber (LArTPC) detector to measure both MeV gamma rays and antinuclei produced by dark matter annihilation or decay. The GRAMS can identify antihelium-3 events based on the measurements of X-rays and charged pions from the decay of the exotic atoms, Time of Flight (TOF), energy deposition, and stopping range. This paper shows the antihelium-3 sensitivity estimation using a GEANT4 Monte Carlo simulation. For the proposed long-duration balloon (LDB) flight program (35 days $ \times $ 3 flights) and future satellite mission (2-year observation / 10-year observation), the sensitivities become 1.47 $\times$ 10$^{-7}$ [m$^2$ s sr GeV/n]$^{-1}$ and 1.55 $\times$ 10$^{-9}$ [m$^2$ s sr GeV/n]$^{-1}$ / $3.10\times10^{-10}$ [m$^2$ s sr GeV/n]$^{-1}$, respectively. The results indicate that GRAMS can extensively investigate various dark matter models through the antihelium-3 measurements. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_16694 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Antihelium-3 Sensitivity for the GRAMS Experiment Zeng, J. Aramaki, T. Aoyama, K. Arai, S. Arai, S. Asaadi, J. Bamba, A. Cannady, N. Coppi, P. De Nolfo, G. Errando, M. Fabris, L. Fujiwara, T. Fukazawa, Y. Ghosh, P. Hagino, K. Hakamata, T. Hiroshima, N. Ichihashi, M. Ichinohe, Y. Inoue, Y. Ishikawa, K. Ishiwata, K. Iwata, T. Karagiorgi, G. Kato, T. Kawamura, H. Khangulyan, D. Krizmanic, J. LeyVa, J. Malige, A. Mitchell, J. G. Mitchell, J. W. Mukherjee, R. Nakajima, R. Nakazawa, K. Odaka, H. Okuma, K. Perez, K. Poudyal, N. Safa, I. Sakai, K. Sasaki, M. Seligman, W. Sensenig, J. Shirahama, K. Shiraishi, T. Smith, S. Suda, Y. Suraj, A. Takahashi, H. Takashima, S. Tamba, T. Tanaka, M. Tandon, S. Tatsumi, R. Tomsick, J. Tsuji, N. Uchida, Y. Utsumi, Y. Watanabe, S. Yano, Y. Yawata, K. Yoneda, H. Yorita, K. Yoshimoto, M. High Energy Physics - Experiment The Gamma-Ray and AntiMatter Survey (GRAMS) is a next-generation balloon/satellite mission utilizing a Liquid Argon Time Projection Chamber (LArTPC) detector to measure both MeV gamma rays and antinuclei produced by dark matter annihilation or decay. The GRAMS can identify antihelium-3 events based on the measurements of X-rays and charged pions from the decay of the exotic atoms, Time of Flight (TOF), energy deposition, and stopping range. This paper shows the antihelium-3 sensitivity estimation using a GEANT4 Monte Carlo simulation. For the proposed long-duration balloon (LDB) flight program (35 days $ \times $ 3 flights) and future satellite mission (2-year observation / 10-year observation), the sensitivities become 1.47 $\times$ 10$^{-7}$ [m$^2$ s sr GeV/n]$^{-1}$ and 1.55 $\times$ 10$^{-9}$ [m$^2$ s sr GeV/n]$^{-1}$ / $3.10\times10^{-10}$ [m$^2$ s sr GeV/n]$^{-1}$, respectively. The results indicate that GRAMS can extensively investigate various dark matter models through the antihelium-3 measurements. |
| title | Antihelium-3 Sensitivity for the GRAMS Experiment |
| topic | High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2503.16694 |