We analyze the prospects of the detection of an O 1 $$ \mathcal{O}(1) $$ GeV neutralino dark matter, χ ˜ 1 0 $$ {\tilde{\chi}}_1^0 $$ , in the Next-to-Minimal Supersymmetric Standard Model at the 14 TeV LHC. We perform dedicated scans of the relevant parameter space of the model and find a large number of points where the thermal relic abundance due to such a dark matter is consistent with the PLANCK measurement. We note that this dark matter is highly singlino-dominated and is always accompanied by a pseudoscalar, A 1 , with a mass around twice its own, which is responsible for its resonant annihilation. For two benchmark points from our scan, we then carry out a detector-level signal-to-background analysis of the pair production of a heavier higgsino neutralino and a chargino. The higgsino thus produced decays into the dark matter and either the Z boson or the A 1 . For the Z -associated production of χ ˜ 1 0 $$ {\tilde{\chi}}_1^0 $$ , we investigate the scope of the trilepton search channel. For the A 1 -associated production mode, in order to identify the two collimated muons coming from the decay of the A 1 , we employ an unconventional method, of clustering them together into one jet-like object. Using this method, for certain parameter space configurations, a much larger sensitivity can be obtained at the 14 TeV LHC for the A 1 χ ˜ 1 0 $$ {A}_1\;{\tilde{\chi}}_1^0 $$ channel compared to the Z χ ˜ 1 0 $$ Z{\tilde{\chi}}_1^0 $$ channel, with an integrated luminosity of 300 fb −1 .
{ "_oai": { "updated": "2018-04-30T17:15:16Z", "id": "oai:repo.scoap3.org:11020" }, "authors": [ { "raw_name": "Han, Chengcheng", "affiliations": [ { "country": "South Korea", "value": "Asia Pacific Center for Theoretical Physics, San 31, Hyoja-dong, Nam-gu, Pohang, 790-784, South Korea" } ], "surname": "Han", "given_names": "Chengcheng", "full_name": "Han, Chengcheng" }, { "raw_name": "Kim, Doyoun", "affiliations": [ { "country": "South Korea", "value": "Asia Pacific Center for Theoretical Physics, San 31, Hyoja-dong, Nam-gu, Pohang, 790-784, South Korea" } ], "surname": "Kim", "given_names": "Doyoun", "full_name": "Kim, Doyoun" }, { "raw_name": "Munir, Shoaib", "affiliations": [ { "country": "South Korea", "value": "Asia Pacific Center for Theoretical Physics, San 31, Hyoja-dong, Nam-gu, Pohang, 790-784, South Korea" } ], "surname": "Munir", "given_names": "Shoaib", "full_name": "Munir, Shoaib" }, { "raw_name": "Park, Myeonghun", "affiliations": [ { "country": "Japan", "value": "Kavli IPMU (WPI), The University of Tokyo, Kashiwa, Chiba, 277-8583, Japan" }, { "country": "South Korea", "value": "Department of Physics, Postech, Pohang, 790-784, South Korea" }, { "country": "South Korea", "value": "Asia Pacific Center for Theoretical Physics, San 31, Hyoja-dong, Nam-gu, Pohang, 790-784, South Korea" } ], "surname": "Park", "given_names": "Myeonghun", "full_name": "Park, Myeonghun" } ], "titles": [ { "source": "Springer/SISSA", "title": "O 1 $$ \\mathcal{O}(1) $$ GeV dark matter in SUSY and a very light pseudoscalar at the LHC" } ], "dois": [ { "value": "10.1007/JHEP07(2015)002" } ], "publication_info": [ { "page_start": "002", "material": "article", "journal_title": "Journal of High Energy Physics", "year": 2015 } ], "$schema": "http://repo.scoap3.org/schemas/hep.json", "acquisition_source": { "date": "2015-07-09T00:00:00", "source": "Springer/SISSA", "method": "scoap3", "submission_number": "271906ca4c7c11e8b67702163e01809a" }, "page_nr": [ 24 ], "license": [ { "url": "http://creativecommons.org/licenses/by/4.0/", "license": "CC-BY-4.0" } ], "copyright": [ { "statement": "The Author(s)" } ], "control_number": "11020", "record_creation_date": "2015-07-09T00:00:00", "_files": [ { "checksum": "md5:c72fd7edaa76486a7aebb36bd85453d7", "filetype": "xml", "bucket": "c90a6a98-d6e2-423c-a4e8-ccb95e0c16d4", "version_id": "d4b5e6ad-24e1-4625-b087-1b4183388899", "key": "10.1007/JHEP07(2015)002.xml", "size": 74857 }, { "checksum": "md5:33b94e8dcf834e930259af229ed2a0a1", "filetype": "pdf/a", "bucket": "c90a6a98-d6e2-423c-a4e8-ccb95e0c16d4", "version_id": "abeb4eda-1c3b-4bf1-b321-37bc1f6c6f30", "key": "10.1007/JHEP07(2015)002_a.pdf", "size": 1793894 } ], "arxiv_eprints": [ { "categories": [ "hep-ph" ], "value": "1504.05085" } ], "abstracts": [ { "source": "Springer/SISSA", "value": "We analyze the prospects of the detection of an O 1 $$ \\mathcal{O}(1) $$ GeV neutralino dark matter, \u03c7 \u02dc 1 0 $$ {\\tilde{\\chi}}_1^0 $$ , in the Next-to-Minimal Supersymmetric Standard Model at the 14 TeV LHC. We perform dedicated scans of the relevant parameter space of the model and find a large number of points where the thermal relic abundance due to such a dark matter is consistent with the PLANCK measurement. We note that this dark matter is highly singlino-dominated and is always accompanied by a pseudoscalar, A 1 , with a mass around twice its own, which is responsible for its resonant annihilation. For two benchmark points from our scan, we then carry out a detector-level signal-to-background analysis of the pair production of a heavier higgsino neutralino and a chargino. The higgsino thus produced decays into the dark matter and either the Z boson or the A 1 . For the Z -associated production of \u03c7 \u02dc 1 0 $$ {\\tilde{\\chi}}_1^0 $$ , we investigate the scope of the trilepton search channel. For the A 1 -associated production mode, in order to identify the two collimated muons coming from the decay of the A 1 , we employ an unconventional method, of clustering them together into one jet-like object. Using this method, for certain parameter space configurations, a much larger sensitivity can be obtained at the 14 TeV LHC for the A 1 \u03c7 \u02dc 1 0 $$ {A}_1\\;{\\tilde{\\chi}}_1^0 $$ channel compared to the Z \u03c7 \u02dc 1 0 $$ Z{\\tilde{\\chi}}_1^0 $$ channel, with an integrated luminosity of 300 fb \u22121 ." } ], "imprints": [ { "date": "2015-07-01", "publisher": "Springer/SISSA" } ] }