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Measurement of the cross section and angular correlations for associated production of a Z boson with b hadrons in pp collisions at root s=7 TeV

Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Bergauer, T.; Dragicevic, M.; Eroe, J.; Fabjan, C.; Friedl, M.; Fruehwirth, R.; Ghete, V. M.; Hoermann, N.; Hrubec, J.; Jeitler, M.; Kiesenhofer, W.; Knuenz, V.; Krammer, M.; Kraetschmer, I.; Liko, D.; Liko, D.


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        "affiliation": "Yerevan Phys Inst, Yerevan 375036, Armenia", 
        "name": "Chatrchyan, S."
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        "affiliation": "Yerevan Phys Inst, Yerevan 375036, Armenia", 
        "name": "Khachatryan, V."
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        "affiliation": "Yerevan Phys Inst, Yerevan 375036, Armenia", 
        "name": "Sirunyan, A. M."
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        "affiliation": "Yerevan Phys Inst, Yerevan 375036, Armenia", 
        "name": "Tumasyan, A."
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        "affiliation": "OeAW, Inst Hochenergiephys, Vienna, Austria", 
        "name": "Adam, W."
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        "affiliation": "OeAW, Inst Hochenergiephys, Vienna, Austria", 
        "name": "Bergauer, T."
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        "affiliation": "OeAW, Inst Hochenergiephys, Vienna, Austria", 
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        "name": "Friedl, M."
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        "affiliation": "OeAW, Inst Hochenergiephys, Vienna, Austria", 
        "name": "Ghete, V. M."
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      {
        "affiliation": "OeAW, Inst Hochenergiephys, Vienna, Austria", 
        "name": "Hoermann, N."
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        "affiliation": "OeAW, Inst Hochenergiephys, Vienna, Austria", 
        "name": "Hrubec, J."
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        "name": "Jeitler, M."
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        "affiliation": "OeAW, Inst Hochenergiephys, Vienna, Austria", 
        "name": "Kiesenhofer, W."
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      {
        "affiliation": "OeAW, Inst Hochenergiephys, Vienna, Austria", 
        "name": "Knuenz, V."
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        "name": "Krammer, M."
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        "affiliation": "OeAW, Inst Hochenergiephys, Vienna, Austria", 
        "name": "Kraetschmer, I."
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      {
        "affiliation": "OeAW, Inst Hochenergiephys, Vienna, Austria", 
        "name": "Liko, D."
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        "affiliation": "OeAW, Inst Hochenergiephys, Vienna, Austria", 
        "name": "Liko, D."
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    "description": "A study of proton-proton collisions in which two b hadrons are produced in association with a Z boson is reported. The collisions were recorded at a centre-of-mass energy of 7 TeVwith the CMS detector at the LHC, for an integrated luminosity of 5.2 fb(-1). The b hadrons are identified by means of displaced secondary vertices, without the use of reconstructed jets, permitting the study of b-hadron pair production at small angular separation. Differential cross sections are presented as a function of the angular separation of the b hadrons and the Z boson. In addition, inclusive measurements are presented. For both the inclusive and differential studies, different ranges of Z boson momentum are considered, and each measurement is compared to the predictions from different event generators at leading-order and next-to-leading-order accuracy.", 
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      "issue": "12", 
      "title": "JOURNAL OF HIGH ENERGY PHYSICS"
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    "title": "Measurement of the cross section and angular correlations for associated production of a Z boson with b hadrons in pp collisions at root s=7 TeV"
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