Measurements of four-lepton (4, =e,��) production cross sections at the Z resonance in pp collisions at the LHC with the ATLAS detector are presented. For dilepton and four-lepton invariant mass regions m+->5GeV and 80<m4<100GeV, the measured cross sections are 76��18(stat) ��4(syst)��1.4(lumi)fb and 107��9(stat)��4(syst) ��3.0(lumi)fb at s=7 and 8 TeV, respectively. By subtracting the nonresonant 4 production contributions and normalizing with Z�����+��- events, the branching fraction for the Z boson decay to 4 is determined to be (3.20��0.25(stat)��0.13(syst))��10-6, consistent with the standard model prediction. �� 2014 CERN, for the ATLAS Collaboration.

Measurements of four-lepton production at the Z resonance in pp collisions at s =7 and 8 TeV with ATLAS / Aad, G., Aloisio, A., Alviggi, M., Canale, V., Chiefari, G., DELLA VOLPE, D., Merola, L., Conventi, F., DELLA PIETRA, M., Giordano, R., Rossi, E., SANCHEZ PINEDA, A.R., Carlino, G., de Asmundis, R., Di Donato, C., Doria, A., Iengo, P., Izzo, V., Sekhniaidze, G., Et, A.l.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 112:231806(2014), pp. 1-18. [10.1103/PhysRevLett.112.231806]

Measurements of four-lepton production at the Z resonance in pp collisions at s =7 and 8 TeV with ATLAS

ALOISIO, ALBERTO;ALVIGGI, MARIAGRAZIA;CANALE, VINCENZO;CHIEFARI, GIOVANNI;DELLA VOLPE, DOMENICO;MEROLA, LEONARDO;CONVENTI, FRANCESCO;DELLA PIETRA, MASSIMO;GIORDANO, RAFFAELE;Rossi, Elvira;SANCHEZ PINEDA, ARTURO RODOLFO;
2014

Abstract

Measurements of four-lepton (4, =e,��) production cross sections at the Z resonance in pp collisions at the LHC with the ATLAS detector are presented. For dilepton and four-lepton invariant mass regions m+->5GeV and 80
2014
Measurements of four-lepton production at the Z resonance in pp collisions at s =7 and 8 TeV with ATLAS / Aad, G., Aloisio, A., Alviggi, M., Canale, V., Chiefari, G., DELLA VOLPE, D., Merola, L., Conventi, F., DELLA PIETRA, M., Giordano, R., Rossi, E., SANCHEZ PINEDA, A.R., Carlino, G., de Asmundis, R., Di Donato, C., Doria, A., Iengo, P., Izzo, V., Sekhniaidze, G., Et, A.l.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 112:231806(2014), pp. 1-18. [10.1103/PhysRevLett.112.231806]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/587474
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