Constraining the p/p ratio in TeV cosmic rays with observations of the Moon shadow by HAWC CONSTRAINING the p/p RATIO in TeV ... A. U. ABEYSEKARA et al.
Por:
Abeysekara, A. U., Albert, A., Alfaro, R., Alvarez, C., Alvarez, J. D., Arceo, R., Arteaga-Velazquez, J. C., Avila Rojas, D., Solares, H. A. Ayala, Belmont-Moreno, E., BenZvi, S. Y., Braun, J., Brisbois, C., Caballero-Mora, K. S., Capistran, T., Carraminana, A., Casanova, S., Castillo, M., Cotti, U., Cotzomi, J., de Leon, S. Coutino, De Leon, C., De la Fuente, E., Hernandez, R. Diaz, Dichiara, S., Dingus, B. L., DuVernois, M. A., Ellsworth, R. W., Engel, K., Enriquez-Rivera, O., Fleischhack, H., Fraija, N., Galvan-Gamez, A., Garcia-Gonzalez, J. A., Munoz, A. Gonzalez, Gonzalez, M. M., Hampel-Arias, Z., Harding, J. P., Hernandez, S., Hona, B., Hueyotl-Zahuantitla, F., Hui, C. M., Huntemeyer, P., Iriarte, A., Jardin-Blicq, A., Joshi, V., Kaufmann, S., Lara, A., Lee, W. H., Leon Vargas, H., Linnemann, J. T., Longinotti, A. L., Luis-Raya, G., Luna-Garcia, R., Lopez-Coto, R., Malone, K., Marinelli, S. S., Martinez, O., Martinez-Castellanos, I., Martinez-Castro, J., Martinez-Huerta, H., Matthews, J. A., Miranda-Romagnoli, P., Moreno, E., Mostafa, M., Nellen, L., Newbold, M., Nisa, M. U., Noriega-Papaqui, R., Pelayo, R., Pretz, J., Perez-Perez, E. G., Ren, Z., Rho, C. D., Riviere, C., Rosa-Gonzalez, D., Rosenberg, M., Ruiz-Velasco, E., Greus, F. Salesa, Sandoval, A., Schneider, M., Schoorlemmer, H., Arroyo, M. Seglar, Sinnis, G., Smith, A. J., Springer, R. W., Surajbali, P., Taboada, I., Tibolla, O., Torres, I., Villasenor, L., Weisgarber, T., Westerhoff, S., Wood, J., Yapici, T., Yodh, G. B., Zepeda, A., Zhou, H., HAWC Collaboration
Publicada:
16 may 2018
Categoría:
Physics and astronomy (miscellaneous)
Resumen:
An indirect measurement of the antiproton flux in cosmic rays is possible as the particles undergo deflection by the geomagnetic field. This effect can be measured by studying the deficit in the flux, or shadow, created by the Moon as it absorbs cosmic rays that are headed toward the Earth. The shadow is displaced from the actual position of the Moon due to geomagnetic deflection, which is a function of the energy and charge of the cosmic rays. The displacement provides a natural tool for momentum/charge discrimination that can be used to study the composition of cosmic rays. Using 33 months of data comprising more than 80 billion cosmic rays measured by the High Altitude Water Cherenkov observatory, we have analyzed the Moon shadow to search for TeV antiprotons in cosmic rays. We present our first upper limits on the p/p fraction, which in the absence of any direct measurements provide the tightest available constraints of ~1% on the antiproton fraction for energies between 1 and 10 TeV. © 2018 American Physical Society.
Filiaciones:
Abeysekara, A. U.:
Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA
Albert, A.:
Los Alamos Natl Lab, Phys Div, Los Alamos, NM USA
Alfaro, R.:
Univ Nacl Autonoma Mexico, Inst Fis, Mexico City, DF, Mexico
Alvarez, C.:
Univ Autonoma Chiapas, Tuxtla Gutierrez, Chiapas, Mexico
Alvarez, J. D.:
Univ Michoacana, Morelia, Michoacan, Mexico
Arceo, R.:
Univ Autonoma Chiapas, Tuxtla Gutierrez, Chiapas, Mexico
Arteaga-Velazquez, J. C.:
Univ Michoacana, Morelia, Michoacan, Mexico
Avila Rojas, D.:
Univ Nacl Autonoma Mexico, Inst Fis, Mexico City, DF, Mexico
Solares, H. A. Ayala:
Penn State Univ, Dept Phys, 104 Davey Lab, University Pk, PA 16802 USA
Belmont-Moreno, E.:
Univ Nacl Autonoma Mexico, Inst Fis, Mexico City, DF, Mexico
BenZvi, S. Y.:
Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA
Braun, J.:
Univ Wisconsin, Dept Phys, 1150 Univ Ave, Madison, WI 53706 USA
Brisbois, C.:
Michigan Technol Univ, Dept Phys, Houghton, MI 49931 USA
Caballero-Mora, K. S.:
Univ Autonoma Chiapas, Tuxtla Gutierrez, Chiapas, Mexico
Capistran, T.:
Inst Nacl Astrofis Opt & Electr, Puebla, Mexico
Carraminana, A.:
Polish Acad Sci, Inst Nucl Phys, IFJ PAN, PL-30055 Krakow, Poland
Casanova, S.:
Polish Acad Sci, Inst Nucl Phys, IFJ PAN, PL-30055 Krakow, Poland
Castillo, M.:
Univ Michoacana, Morelia, Michoacan, Mexico
Cotti, U.:
Univ Michoacana, Morelia, Michoacan, Mexico
Cotzomi, J.:
Benemerita Univ Autonoma Puebla, Fac Ciencias Fis Matemat, Puebla, Mexico
de Leon, S. Coutino:
Polish Acad Sci, Inst Nucl Phys, IFJ PAN, PL-30055 Krakow, Poland
De Leon, C.:
Benemerita Univ Autonoma Puebla, Fac Ciencias Fis Matemat, Puebla, Mexico
De la Fuente, E.:
Univ Guadalajara, Ctr Univ Ciencias Exactase Ingn, Dept Fis, Guadalajara, Jalisco, Mexico
Hernandez, R. Diaz:
Polish Acad Sci, Inst Nucl Phys, IFJ PAN, PL-30055 Krakow, Poland
Dichiara, S.:
Univ Nacl Autonoma Mexico, Inst Astron, Mexico City, DF, Mexico
Dingus, B. L.:
Los Alamos Natl Lab, Phys Div, Los Alamos, NM USA
DuVernois, M. A.:
Univ Wisconsin, Dept Phys, 1150 Univ Ave, Madison, WI 53706 USA
Ellsworth, R. W.:
George Mason Univ, Sch Phys Astron & Computat Sci, Fairfax, VA 22030 USA
Engel, K.:
Univ Maryland, Dept Phys, College Pk, MD 20742 USA
Enriquez-Rivera, O.:
Univ Nacl Autonoma Mexico, Inst Geofis, Mexico City, DF, Mexico
Fleischhack, H.:
Michigan Technol Univ, Dept Phys, Houghton, MI 49931 USA
Fraija, N.:
Univ Nacl Autonoma Mexico, Inst Astron, Mexico City, DF, Mexico
Galvan-Gamez, A.:
Univ Nacl Autonoma Mexico, Inst Astron, Mexico City, DF, Mexico
Garcia-Gonzalez, J. A.:
Univ Nacl Autonoma Mexico, Inst Fis, Mexico City, DF, Mexico
Munoz, A. Gonzalez:
Univ Nacl Autonoma Mexico, Inst Fis, Mexico City, DF, Mexico
Gonzalez, M. M.:
Univ Nacl Autonoma Mexico, Inst Astron, Mexico City, DF, Mexico
Hampel-Arias, Z.:
Univ Wisconsin, Dept Phys, 1150 Univ Ave, Madison, WI 53706 USA
Harding, J. P.:
Los Alamos Natl Lab, Phys Div, Los Alamos, NM USA
Hernandez, S.:
Univ Nacl Autonoma Mexico, Inst Fis, Mexico City, DF, Mexico
Hona, B.:
Michigan Technol Univ, Dept Phys, Houghton, MI 49931 USA
Hueyotl-Zahuantitla, F.:
Univ Autonoma Chiapas, Tuxtla Gutierrez, Chiapas, Mexico
Hui, C. M.:
NASA, Marshall Space Flight Ctr, Astrophys Off, Huntsville, AL 35812 USA
Huntemeyer, P.:
Michigan Technol Univ, Dept Phys, Houghton, MI 49931 USA
Iriarte, A.:
Univ Nacl Autonoma Mexico, Inst Astron, Mexico City, DF, Mexico
Jardin-Blicq, A.:
Max Planck Inst Nucl Phys, D-69117 Heidelberg, Germany
Joshi, V.:
Max Planck Inst Nucl Phys, D-69117 Heidelberg, Germany
Kaufmann, S.:
Univ Autonoma Chiapas, Tuxtla Gutierrez, Chiapas, Mexico
Lara, A.:
Univ Nacl Autonoma Mexico, Inst Geofis, Mexico City, DF, Mexico
Lee, W. H.:
Univ Nacl Autonoma Mexico, Inst Astron, Mexico City, DF, Mexico
Leon Vargas, H.:
Univ Nacl Autonoma Mexico, Inst Fis, Mexico City, DF, Mexico
Linnemann, J. T.:
Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA
Longinotti, A. L.:
Polish Acad Sci, Inst Nucl Phys, IFJ PAN, PL-30055 Krakow, Poland
Luis-Raya, G.:
Univ Politecn Pachuca, Pachuca, Hgo, Mexico
Luna-Garcia, R.:
Inst Politecn Nacl, Ctr Invest Computac, Mexico City, DF, Mexico
Lopez-Coto, R.:
Ist Nazl Fis Nucl, Via Marzolo 8, I-35131 Padua, Italy
Univ Padua, Via Marzolo 8, I-35131 Padua, Italy
Malone, K.:
Penn State Univ, Dept Phys, 104 Davey Lab, University Pk, PA 16802 USA
Marinelli, S. S.:
Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA
Martinez, O.:
Benemerita Univ Autonoma Puebla, Fac Ciencias Fis Matemat, Puebla, Mexico
Martinez-Castellanos, I.:
Univ Maryland, Dept Phys, College Pk, MD 20742 USA
Martinez-Castro, J.:
Inst Politecn Nacl, Ctr Invest Computac, Mexico City, DF, Mexico
Martinez-Huerta, H.:
Ctr Invest & Estudios Avanzados IPN, Phys Dept, Mexico City, DF, Mexico
Matthews, J. A.:
Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA
Miranda-Romagnoli, P.:
Univ Autonoma Estado Hidalgo, Pachuca, Mexico
Moreno, E.:
Univ Nacl Autonoma Mexico, Inst Fis, Mexico City, DF, Mexico
Benemerita Univ Autonoma Puebla, Fac Ciencias Fis Matemat, Puebla, Mexico
Mostafa, M.:
Penn State Univ, Dept Phys, 104 Davey Lab, University Pk, PA 16802 USA
Nellen, L.:
Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Mexico City, DF, Mexico
Newbold, M.:
Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA
Nisa, M. U.:
Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA
Noriega-Papaqui, R.:
Univ Autonoma Estado Hidalgo, Pachuca, Mexico
Pelayo, R.:
Inst Politecn Nacl, Ctr Invest Computac, Mexico City, DF, Mexico
Pretz, J.:
Penn State Univ, Dept Phys, 104 Davey Lab, University Pk, PA 16802 USA
Perez-Perez, E. G.:
Univ Politecn Pachuca, Pachuca, Hgo, Mexico
Ren, Z.:
Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA
Rho, C. D.:
Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA
Riviere, C.:
Univ Maryland, Dept Phys, College Pk, MD 20742 USA
Rosa-Gonzalez, D.:
Georgia Inst Technol, Sch Phys, Atlanta, GA 30333 USA
Georgia Inst Technol, Ctr Relativist Astrophys, Atlanta, GA 30333 USA
Rosenberg, M.:
Penn State Univ, Dept Phys, 104 Davey Lab, University Pk, PA 16802 USA
Ruiz-Velasco, E.:
Max Planck Inst Nucl Phys, D-69117 Heidelberg, Germany
Greus, F. Salesa:
Polish Acad Sci, Inst Nucl Phys, IFJ PAN, PL-30055 Krakow, Poland
Sandoval, A.:
Univ Nacl Autonoma Mexico, Inst Fis, Mexico City, DF, Mexico
Schneider, M.:
Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA
Schoorlemmer, H.:
Max Planck Inst Nucl Phys, D-69117 Heidelberg, Germany
Arroyo, M. Seglar:
Penn State Univ, Dept Phys, 104 Davey Lab, University Pk, PA 16802 USA
Sinnis, G.:
Los Alamos Natl Lab, Phys Div, Los Alamos, NM USA
Smith, A. J.:
Univ Maryland, Dept Phys, College Pk, MD 20742 USA
Springer, R. W.:
Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA
Surajbali, P.:
Max Planck Inst Nucl Phys, D-69117 Heidelberg, Germany
Taboada, I.:
Georgia Inst Technol, Sch Phys, Atlanta, GA 30333 USA
Georgia Inst Technol, Ctr Relativist Astrophys, Atlanta, GA 30333 USA
Tibolla, O.:
Univ Autonoma Chiapas, Tuxtla Gutierrez, Chiapas, Mexico
Torres, I.:
Georgia Inst Technol, Sch Phys, Atlanta, GA 30333 USA
Georgia Inst Technol, Ctr Relativist Astrophys, Atlanta, GA 30333 USA
Villasenor, L.:
Benemerita Univ Autonoma Puebla, Fac Ciencias Fis Matemat, Puebla, Mexico
Weisgarber, T.:
Univ Wisconsin, Dept Phys, 1150 Univ Ave, Madison, WI 53706 USA
Westerhoff, S.:
Univ Wisconsin, Dept Phys, 1150 Univ Ave, Madison, WI 53706 USA
Wood, J.:
Univ Wisconsin, Dept Phys, 1150 Univ Ave, Madison, WI 53706 USA
Yapici, T.:
Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA
Yodh, G. B.:
Univ Calif Irvine, Dept Phys & Astron, Irvine, CA USA
Zepeda, A.:
Ctr Invest & Estudios Avanzados IPN, Phys Dept, Mexico City, DF, Mexico
Zhou, H.:
Los Alamos Natl Lab, Phys Div, Los Alamos, NM USA
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