New measurement of the antiproton-to-proton flux ratio up to 100 GeV in the cosmic radiation.

New measurement of the antiproton-to-proton flux ratio up to 100 GeV in the cosmic radiation.
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DOI：
10.1103/physrevlett.102.051101
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发表时间：
2008-10
期刊：
Physical review letters
影响因子：
8.6
通讯作者：
O. Adriani;G. Barbarino;G. Bazilevskaya;R. Bellotti;M. Boezio;É. Bogomolov;L. Bonechi;M. Bongi;V. Bonvicini;S. Bottai;A. Bruno;F. Cafagna;D. Campana;P. Carlson;M. Casolino;G. Castellini;M. P. Pascale;G. Rosa;D. Fedele;A. Galper;L. Grishantseva;P. Hofverberg;S. Koldashov;S. Krutkov;A. Kvashnin;A. Leonov;V. Malvezzi;L. Marcelli;W. Menn;V. Mikhailov;M. Minori;E. Mocchiutti;M. Nagni;S. Orsi;G. Osteria;P. Papini;M. Pearce;P. Picozza;M. Ricci;S. Ricciarini;M. Simon;R. Sparvoli;P. Spillantini;Y. Stozhkov;E. Taddei;A. Vacchi;E. Vannuccini;G. Vasilyev;S. Voronov;Y. Yurkin;G. Zampa;N. Zampa;V. Zverev
O. Adriani;G. Barbarino;G. Bazilevskaya;R. Bellotti;M. Boezio;É. Bogomolov;L. Bonechi;M. Bongi;V. Bonvicini;S. Bottai;A. Bruno;F. Cafagna;D. Campana;P. Carlson;M. Casolino;G. Castellini;M. P. Pascale;G. Rosa;D. Fedele;A. Galper;L. Grishantseva;P. Hofverberg;S. Koldashov;S. Krutkov;A. Kvashnin;A. Leonov;V. Malvezzi;L. Marcelli;W. Menn;V. Mikhailov;M. Minori;E. Mocchiutti;M. Nagni;S. Orsi;G. Osteria;P. Papini;M. Pearce;P. Picozza;M. Ricci;S. Ricciarini;M. Simon;R. Sparvoli;P. Spillantini;Y. Stozhkov;E. Taddei;A. Vacchi;E. Vannuccini;G. Vasilyev;S. Voronov;Y. Yurkin;G. Zampa;N. Zampa;V. Zverev
中科院分区：
物理与天体物理1区
文献类型：
--
作者：
O. Adriani;G. Barbarino;G. Bazilevskaya;R. Bellotti;M. Boezio;É. Bogomolov;L. Bonechi;M. Bongi;V. Bonvicini;S. Bottai;A. Bruno;F. Cafagna;D. Campana;P. Carlson;M. Casolino;G. Castellini;M. P. Pascale;G. Rosa;D. Fedele;A. Galper;L. Grishantseva;P. Hofverberg;S. Koldashov;S. Krutkov;A. Kvashnin;A. Leonov;V. Malvezzi;L. Marcelli;W. Menn;V. Mikhailov;M. Minori;E. Mocchiutti;M. Nagni;S. Orsi;G. Osteria;P. Papini;M. Pearce;P. Picozza;M. Ricci;S. Ricciarini;M. Simon;R. Sparvoli;P. Spillantini;Y. Stozhkov;E. Taddei;A. Vacchi;E. Vannuccini;G. Vasilyev;S. Voronov;Y. Yurkin;G. Zampa;N. Zampa;V. Zverev

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本文提出了一种新的测量宇宙线反质子-质子通量比的方法。这些结果是通过PAMELA实验获得的，该实验于2006年6月15日搭载Resurs-DK 1卫星发射到低地球轨道。在500天的数据收集过程中，总共发现了大约1000个反质子，其中包括100个能量在20 GeV以上的反质子。高能量的结果是一个10倍的统计改进，就所有以前公布的数据。这些数据符合次级生产计算的预期趋势，并大大限制了外来来源的贡献，例如，暗物质粒子湮灭
A new measurement of the cosmic-ray antiproton-to-proton flux ratio between 1 and 100 GeV is presented. The results were obtained with the PAMELA experiment, which was launched into low-Earth orbit on-board the Resurs-DK1 satellite on June 15th 2006. During 500 days of data collection a total of about 1000 antiprotons have been identified, including 100 above an energy of 20 GeV. The high-energy results are a tenfold improvement in statistics with respect to all previously published data. The data follow the trend expected from secondary production calculations and significantly constrain contributions from exotic sources, e.g., dark matter particle annihilations.