Lifetimes of light stringy states
In this paper, we evaluate the lifetime of the light stringy states that emerge in intersecting D-brane realisations of the Standard Model. For concreteness, we focus on a light massive scalar decaying into two massless fermions. Given the present experimental lower bounds of the string scale, we ex...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-05-01
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| Series: | Nuclear Physics B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0550321322001006 |
| _version_ | 1818127808765886464 |
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| author | Pascal Anastasopoulos Elias Niederwieser |
| author_facet | Pascal Anastasopoulos Elias Niederwieser |
| author_sort | Pascal Anastasopoulos |
| collection | DOAJ |
| description | In this paper, we evaluate the lifetime of the light stringy states that emerge in intersecting D-brane realisations of the Standard Model. For concreteness, we focus on a light massive scalar decaying into two massless fermions. Given the present experimental lower bounds of the string scale, we extrapolate the lifetime as a function of the intersection angles to very small angles in order to have states with lifetimes of the order of the universe. That provides an alluring example of a massive, very weakly interacting field with a huge lifetime, proposing itself as a potential dark matter candidate. |
| first_indexed | 2024-12-11T07:23:15Z |
| format | Article |
| id | doaj.art-41c21d833dd34c20896feb58b4060294 |
| institution | Directory Open Access Journal |
| issn | 0550-3213 |
| language | English |
| last_indexed | 2024-12-11T07:23:15Z |
| publishDate | 2022-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Physics B |
| spelling | doaj.art-41c21d833dd34c20896feb58b40602942022-12-22T01:16:02ZengElsevierNuclear Physics B0550-32132022-05-01978115749Lifetimes of light stringy statesPascal Anastasopoulos0Elias Niederwieser1Corresponding authors.; Mathematical Physics Group, Department of Physics, University of Vienna, Boltzmanngasse 5 1090 Vienna, AustriaCorresponding authors.; Mathematical Physics Group, Department of Physics, University of Vienna, Boltzmanngasse 5 1090 Vienna, AustriaIn this paper, we evaluate the lifetime of the light stringy states that emerge in intersecting D-brane realisations of the Standard Model. For concreteness, we focus on a light massive scalar decaying into two massless fermions. Given the present experimental lower bounds of the string scale, we extrapolate the lifetime as a function of the intersection angles to very small angles in order to have states with lifetimes of the order of the universe. That provides an alluring example of a massive, very weakly interacting field with a huge lifetime, proposing itself as a potential dark matter candidate.http://www.sciencedirect.com/science/article/pii/S0550321322001006 |
| spellingShingle | Pascal Anastasopoulos Elias Niederwieser Lifetimes of light stringy states Nuclear Physics B |
| title | Lifetimes of light stringy states |
| title_full | Lifetimes of light stringy states |
| title_fullStr | Lifetimes of light stringy states |
| title_full_unstemmed | Lifetimes of light stringy states |
| title_short | Lifetimes of light stringy states |
| title_sort | lifetimes of light stringy states |
| url | http://www.sciencedirect.com/science/article/pii/S0550321322001006 |
| work_keys_str_mv | AT pascalanastasopoulos lifetimesoflightstringystates AT eliasniederwieser lifetimesoflightstringystates |