A hadronic explanation of the lepton anomaly

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A hadronic explanation of the lepton anomaly. / Mertsch, Philipp; Sarkar, Subir.

In: Journal of Physics - Conference Series, Vol. 531, No. 1, 012008, 01.01.2014.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Mertsch, P & Sarkar, S 2014, 'A hadronic explanation of the lepton anomaly', Journal of Physics - Conference Series, vol. 531, no. 1, 012008. https://doi.org/10.1088/1742-6596/531/1/012008

APA

Mertsch, P., & Sarkar, S. (2014). A hadronic explanation of the lepton anomaly. Journal of Physics - Conference Series, 531(1), [012008]. https://doi.org/10.1088/1742-6596/531/1/012008

Vancouver

Mertsch P, Sarkar S. A hadronic explanation of the lepton anomaly. Journal of Physics - Conference Series. 2014 Jan 1;531(1). 012008. https://doi.org/10.1088/1742-6596/531/1/012008

Author

Mertsch, Philipp ; Sarkar, Subir. / A hadronic explanation of the lepton anomaly. In: Journal of Physics - Conference Series. 2014 ; Vol. 531, No. 1.

Bibtex

@article{b72af0f035044555b928eca9069508f3,
title = "A hadronic explanation of the lepton anomaly",
abstract = "The rise in the positron fraction, observed by PAMELA, Fermi-LAT and mostrecently by AMS-02, has created a lot of interest, fuelled by speculations about an origin in dark matter annihilation in the Galactic halo. However, other channels, e.g. antiprotons or gamma-rays, now severely constrain dark matter interpretations, thus requiring astrophysical sources of positrons. We have investigated the possibility that supernova remnants, the most likely sources of Galactic cosmic rays, can in fact also produce a hard spectrum of secondary positrons, by spallation and acceleration at the shock. This mechanism is guaranteed if hadronic CRs are present and would also lead to observable signatures in other secondary channels like the boron-to-carbon or antiproton-to-proton ratios. If such features were borne out by upcoming AMS-02 data, this would rule out other explanations.",
author = "Philipp Mertsch and Subir Sarkar",
year = "2014",
month = jan,
day = "1",
doi = "10.1088/1742-6596/531/1/012008",
language = "English",
volume = "531",
journal = "Journal of Physics: Conference Series",
issn = "1742-6588",
publisher = "Institute of Physics Publishing Ltd",
number = "1",

}

RIS

TY - JOUR

T1 - A hadronic explanation of the lepton anomaly

AU - Mertsch, Philipp

AU - Sarkar, Subir

PY - 2014/1/1

Y1 - 2014/1/1

N2 - The rise in the positron fraction, observed by PAMELA, Fermi-LAT and mostrecently by AMS-02, has created a lot of interest, fuelled by speculations about an origin in dark matter annihilation in the Galactic halo. However, other channels, e.g. antiprotons or gamma-rays, now severely constrain dark matter interpretations, thus requiring astrophysical sources of positrons. We have investigated the possibility that supernova remnants, the most likely sources of Galactic cosmic rays, can in fact also produce a hard spectrum of secondary positrons, by spallation and acceleration at the shock. This mechanism is guaranteed if hadronic CRs are present and would also lead to observable signatures in other secondary channels like the boron-to-carbon or antiproton-to-proton ratios. If such features were borne out by upcoming AMS-02 data, this would rule out other explanations.

AB - The rise in the positron fraction, observed by PAMELA, Fermi-LAT and mostrecently by AMS-02, has created a lot of interest, fuelled by speculations about an origin in dark matter annihilation in the Galactic halo. However, other channels, e.g. antiprotons or gamma-rays, now severely constrain dark matter interpretations, thus requiring astrophysical sources of positrons. We have investigated the possibility that supernova remnants, the most likely sources of Galactic cosmic rays, can in fact also produce a hard spectrum of secondary positrons, by spallation and acceleration at the shock. This mechanism is guaranteed if hadronic CRs are present and would also lead to observable signatures in other secondary channels like the boron-to-carbon or antiproton-to-proton ratios. If such features were borne out by upcoming AMS-02 data, this would rule out other explanations.

U2 - 10.1088/1742-6596/531/1/012008

DO - 10.1088/1742-6596/531/1/012008

M3 - Journal article

VL - 531

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

IS - 1

M1 - 012008

ER -

ID: 129923973