Supersymmetric QCD and CP-violation effects in ttZ{sup 0} production at the LHC
We investigate the NLO QCD and the CP-violation effects in ttZ{sup 0} production at the LHC in the minimal supersymmetric standard model (MSSM). Our calculation shows that the total NLO QCD correction in the framework of the CP-conserving MSSM significantly improves the scale uncertainty at the lead...
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| Veröffentlicht in: | Physical review. D, Particles and fields Particles and fields, 2010-07, Vol.82 (1) |
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| container_title | Physical review. D, Particles and fields |
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| creator | Liu Ning Guo Lei Ma Wengan Zhang Renyou Han Liang |
| description | We investigate the NLO QCD and the CP-violation effects in ttZ{sup 0} production at the LHC in the minimal supersymmetric standard model (MSSM). Our calculation shows that the total NLO QCD correction in the framework of the CP-conserving MSSM significantly improves the scale uncertainty at the leading order, and the contribution from the pure supersymmetric QCD (pSQCD) correction can exceed -8% with the restrictions of 90 GeV |
| doi_str_mv | 10.1103/PHYSREVD.82.015009 |
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Our calculation shows that the total NLO QCD correction in the framework of the CP-conserving MSSM significantly improves the scale uncertainty at the leading order, and the contribution from the pure supersymmetric QCD (pSQCD) correction can exceed -8% with the restrictions of 90 GeV<p{sub T}{sup t}<120 GeV and 120 GeV<p{sub T}{sup Z}<150 GeV, where p{sub T}{sup t} and p{sub T}{sup Z} are the transverse momenta of the top quark and Z{sup 0} gauge boson, respectively. Our numerical results demonstrate that the pure supersymmetric QCD correction generally suppresses the total standard model-like QCD correction in the CP-conserving MSSM, and tends to be a constant when either t-tilde{sub 1} or g-tilde is heavy enough. We find also that the CP-odd asymmetry A{sub {Phi}}can reach 2.17x10{sup -3}, if the CP-phase angle really exists in the coupling of gluino-stop-top.</description><identifier>ISSN: 0556-2821</identifier><identifier>EISSN: 1089-4918</identifier><identifier>DOI: 10.1103/PHYSREVD.82.015009</identifier><language>eng</language><publisher>United States</publisher><subject>ACCELERATORS ; ASYMMETRY ; BOSONS ; CERN LHC ; COMPUTERIZED SIMULATION ; CORRECTIONS ; COUPLING ; CP INVARIANCE ; CYCLIC ACCELERATORS ; ELEMENTARY PARTICLES ; ENERGY RANGE ; FERMIONS ; FIELD THEORIES ; GEV RANGE ; GEV RANGE 100-1000 ; GRAND UNIFIED THEORY ; INVARIANCE PRINCIPLES ; LINEAR MOMENTUM ; MATHEMATICAL MODELS ; PARTICLE MODELS ; PHYSICS OF ELEMENTARY PARTICLES AND FIELDS ; POSTULATED PARTICLES ; QUANTUM CHROMODYNAMICS ; QUANTUM FIELD THEORY ; QUARKS ; SIMULATION ; STANDARD MODEL ; STORAGE RINGS ; SUPERSYMMETRY ; SYMMETRY ; SYNCHROTRONS ; T QUARKS ; TOP PARTICLES ; TRANSVERSE MOMENTUM ; UNIFIED GAUGE MODELS</subject><ispartof>Physical review. D, Particles and fields, 2010-07, Vol.82 (1)</ispartof><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,776,780,881,27901,27902</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/21410065$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Liu Ning</creatorcontrib><creatorcontrib>Guo Lei</creatorcontrib><creatorcontrib>Ma Wengan</creatorcontrib><creatorcontrib>Zhang Renyou</creatorcontrib><creatorcontrib>Han Liang</creatorcontrib><title>Supersymmetric QCD and CP-violation effects in ttZ{sup 0} production at the LHC</title><title>Physical review. D, Particles and fields</title><description>We investigate the NLO QCD and the CP-violation effects in ttZ{sup 0} production at the LHC in the minimal supersymmetric standard model (MSSM). Our calculation shows that the total NLO QCD correction in the framework of the CP-conserving MSSM significantly improves the scale uncertainty at the leading order, and the contribution from the pure supersymmetric QCD (pSQCD) correction can exceed -8% with the restrictions of 90 GeV<p{sub T}{sup t}<120 GeV and 120 GeV<p{sub T}{sup Z}<150 GeV, where p{sub T}{sup t} and p{sub T}{sup Z} are the transverse momenta of the top quark and Z{sup 0} gauge boson, respectively. Our numerical results demonstrate that the pure supersymmetric QCD correction generally suppresses the total standard model-like QCD correction in the CP-conserving MSSM, and tends to be a constant when either t-tilde{sub 1} or g-tilde is heavy enough. We find also that the CP-odd asymmetry A{sub {Phi}}can reach 2.17x10{sup -3}, if the CP-phase angle really exists in the coupling of gluino-stop-top.</description><subject>ACCELERATORS</subject><subject>ASYMMETRY</subject><subject>BOSONS</subject><subject>CERN LHC</subject><subject>COMPUTERIZED SIMULATION</subject><subject>CORRECTIONS</subject><subject>COUPLING</subject><subject>CP INVARIANCE</subject><subject>CYCLIC ACCELERATORS</subject><subject>ELEMENTARY PARTICLES</subject><subject>ENERGY RANGE</subject><subject>FERMIONS</subject><subject>FIELD THEORIES</subject><subject>GEV RANGE</subject><subject>GEV RANGE 100-1000</subject><subject>GRAND UNIFIED THEORY</subject><subject>INVARIANCE PRINCIPLES</subject><subject>LINEAR MOMENTUM</subject><subject>MATHEMATICAL MODELS</subject><subject>PARTICLE MODELS</subject><subject>PHYSICS OF ELEMENTARY PARTICLES AND FIELDS</subject><subject>POSTULATED PARTICLES</subject><subject>QUANTUM CHROMODYNAMICS</subject><subject>QUANTUM FIELD THEORY</subject><subject>QUARKS</subject><subject>SIMULATION</subject><subject>STANDARD MODEL</subject><subject>STORAGE RINGS</subject><subject>SUPERSYMMETRY</subject><subject>SYMMETRY</subject><subject>SYNCHROTRONS</subject><subject>T QUARKS</subject><subject>TOP PARTICLES</subject><subject>TRANSVERSE MOMENTUM</subject><subject>UNIFIED GAUGE MODELS</subject><issn>0556-2821</issn><issn>1089-4918</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><recordid>eNqNjMFqwkAUAJdiwWj7A54e9Jz43saE5ByVHARtFcFeJKwb3KK7IftSkNJ_V8QPcC5zGUaIEWFEhPF4Ve7WX7PtNMpkhJQg5i8iIMzycJJT1hMBJkkaykxSXwy8_8EbMo0DsVx3jW795XzW3BoFn8UUKnuAYhX-Gneq2DgLuq61Yg_GAvP3n-8awH9oWnfo1D2oGPioYVEWb-K1rk5evz88FB_z2aYoQ-fZ7L0yrNVROWtvw72kCSGmSfxcdQUXOEVQ</recordid><startdate>20100701</startdate><enddate>20100701</enddate><creator>Liu Ning</creator><creator>Guo Lei</creator><creator>Ma Wengan</creator><creator>Zhang Renyou</creator><creator>Han Liang</creator><scope>OTOTI</scope></search><sort><creationdate>20100701</creationdate><title>Supersymmetric QCD and CP-violation effects in ttZ{sup 0} production at the LHC</title><author>Liu Ning ; Guo Lei ; Ma Wengan ; Zhang Renyou ; Han Liang</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-osti_scitechconnect_214100653</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>ACCELERATORS</topic><topic>ASYMMETRY</topic><topic>BOSONS</topic><topic>CERN LHC</topic><topic>COMPUTERIZED SIMULATION</topic><topic>CORRECTIONS</topic><topic>COUPLING</topic><topic>CP INVARIANCE</topic><topic>CYCLIC ACCELERATORS</topic><topic>ELEMENTARY PARTICLES</topic><topic>ENERGY RANGE</topic><topic>FERMIONS</topic><topic>FIELD THEORIES</topic><topic>GEV RANGE</topic><topic>GEV RANGE 100-1000</topic><topic>GRAND UNIFIED THEORY</topic><topic>INVARIANCE PRINCIPLES</topic><topic>LINEAR MOMENTUM</topic><topic>MATHEMATICAL MODELS</topic><topic>PARTICLE MODELS</topic><topic>PHYSICS OF ELEMENTARY PARTICLES AND FIELDS</topic><topic>POSTULATED PARTICLES</topic><topic>QUANTUM CHROMODYNAMICS</topic><topic>QUANTUM FIELD THEORY</topic><topic>QUARKS</topic><topic>SIMULATION</topic><topic>STANDARD MODEL</topic><topic>STORAGE RINGS</topic><topic>SUPERSYMMETRY</topic><topic>SYMMETRY</topic><topic>SYNCHROTRONS</topic><topic>T QUARKS</topic><topic>TOP PARTICLES</topic><topic>TRANSVERSE MOMENTUM</topic><topic>UNIFIED GAUGE MODELS</topic><toplevel>online_resources</toplevel><creatorcontrib>Liu Ning</creatorcontrib><creatorcontrib>Guo Lei</creatorcontrib><creatorcontrib>Ma Wengan</creatorcontrib><creatorcontrib>Zhang Renyou</creatorcontrib><creatorcontrib>Han Liang</creatorcontrib><collection>OSTI.GOV</collection><jtitle>Physical review. D, Particles and fields</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Liu Ning</au><au>Guo Lei</au><au>Ma Wengan</au><au>Zhang Renyou</au><au>Han Liang</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Supersymmetric QCD and CP-violation effects in ttZ{sup 0} production at the LHC</atitle><jtitle>Physical review. D, Particles and fields</jtitle><date>2010-07-01</date><risdate>2010</risdate><volume>82</volume><issue>1</issue><issn>0556-2821</issn><eissn>1089-4918</eissn><abstract>We investigate the NLO QCD and the CP-violation effects in ttZ{sup 0} production at the LHC in the minimal supersymmetric standard model (MSSM). Our calculation shows that the total NLO QCD correction in the framework of the CP-conserving MSSM significantly improves the scale uncertainty at the leading order, and the contribution from the pure supersymmetric QCD (pSQCD) correction can exceed -8% with the restrictions of 90 GeV<p{sub T}{sup t}<120 GeV and 120 GeV<p{sub T}{sup Z}<150 GeV, where p{sub T}{sup t} and p{sub T}{sup Z} are the transverse momenta of the top quark and Z{sup 0} gauge boson, respectively. Our numerical results demonstrate that the pure supersymmetric QCD correction generally suppresses the total standard model-like QCD correction in the CP-conserving MSSM, and tends to be a constant when either t-tilde{sub 1} or g-tilde is heavy enough. We find also that the CP-odd asymmetry A{sub {Phi}}can reach 2.17x10{sup -3}, if the CP-phase angle really exists in the coupling of gluino-stop-top.</abstract><cop>United States</cop><doi>10.1103/PHYSREVD.82.015009</doi></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0556-2821 |
| ispartof | Physical review. D, Particles and fields, 2010-07, Vol.82 (1) |
| issn | 0556-2821 1089-4918 |
| language | eng |
| recordid | cdi_osti_scitechconnect_21410065 |
| source | American Physical Society Journals |
| subjects | ACCELERATORS ASYMMETRY BOSONS CERN LHC COMPUTERIZED SIMULATION CORRECTIONS COUPLING CP INVARIANCE CYCLIC ACCELERATORS ELEMENTARY PARTICLES ENERGY RANGE FERMIONS FIELD THEORIES GEV RANGE GEV RANGE 100-1000 GRAND UNIFIED THEORY INVARIANCE PRINCIPLES LINEAR MOMENTUM MATHEMATICAL MODELS PARTICLE MODELS PHYSICS OF ELEMENTARY PARTICLES AND FIELDS POSTULATED PARTICLES QUANTUM CHROMODYNAMICS QUANTUM FIELD THEORY QUARKS SIMULATION STANDARD MODEL STORAGE RINGS SUPERSYMMETRY SYMMETRY SYNCHROTRONS T QUARKS TOP PARTICLES TRANSVERSE MOMENTUM UNIFIED GAUGE MODELS |
| title | Supersymmetric QCD and CP-violation effects in ttZ{sup 0} production at the LHC |
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