Measurement of the combined rapidity and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.gif" overflow="scroll"><mml:msub><mml:mrow><mml:mi>p</mml:mi></mml:mrow><mml:mrow><mml:mi>T</mml:mi></mml:mrow></mml:msub></mml:math> dependence of dijet azimuthal decorrelations in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si2.gif" overflow="scroll"><mml:mi>p</mml:mi><mml:mover accent="true"><mml:mi>p</mml:mi><mml:mo>¯</mml:mo></mml:mover></mml:math> collisions at <mml:math

Abazov, V. M.; Abbott, B.; Acharya, B. S.; Adams, M. R.; Adams, T.; Alexeev, G. D.; Alkhazov, G.; Alton, A.; Askew, A.; Atkins, S.; Augsten, K.; Ávila, C.; Badaud, F.; Bagby, L.; Baldin, B.; Bandurin, D. V.; Banerjee, S.; Barberis, E.; Baringer, P.; Bartlett, J. F.; Bassler, U.; Bazterra, V. E.; Bean, A.; Begalli, M.; Bellantoni, L.; Beri, S. B.; Bernardi, G.; Bernhard, R.; Bertram, I.; Besançon, M.; Beuselinck, R.; Bhat, P. C.; Bhatia, S.; Bhatnagar, V.; Blazey, G.; Blessing, S.; Bloom, K.; Boehnlein, A.; Boline, D.; Boos, E.; Borissov, G.; Brandt, A.; Brandt, O.; Brock, R.; Bross, A.; Brown, D.; Brown, J.; Bu, X. B.; Buehler, M.; Buescher, V.; Bunichev, V.; Burdin, S.; Buszello, C. P.; Camacho-Pérez, E.; Casey, B. C.K.; Castilla‐Valdez, H.; Caughron, S.; Chakrabarti, S.; Chakraborty, D.; Chakravarthula, Kiran; Chan, K. M.; Chandra, A.; Chapon, É.; Chen, G.; Cho, S. W.; Choi, S.; Choudhary, B. C.; Cihangir, S.; Claes, D. R.; Clutter, J.; Cooke, M.; Cooper, W. 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D.; Wang, Michael; Warchol, J.; Watts, G.; Wayne, M.; Weichert, J.; Welty-Rieger, L.; White, A.; Wicke, D.; Williams, Mark Richard James; Wilson, G. W.; Wobisch, M.; Wood, D.; Wyatt, T. R.; Xie, Y.; Yamada, R.; Yang, S.; Yasuda, T.; Yatsunenko, Y. A.; Ye, W.; Ye, Z.; Yin, H.; Yip, K.; Youn, S. W.; Yu, J.; Zennamo, J.; Zhao, T.; Zhou, B.; Zhu, J.; Zieliński, M.; Ziemińska, D.; Živković, L.

doi:10.1016/j.physletb.2013.03.029

Cited by 11 publications

(3 citation statements)

References 30 publications

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“…The measurement is performed using data collected during 2012 with the CMS experiment at the CERN LHC, corresponding to an integrated luminosity of 19.7 fb −1 of proton-proton collisions at √ s = 8 TeV. Previous measurements of dijet azimuthal decorrelation were reported by the D0 Collaboration in pp collisions at √ s = 1.96 TeV at the Tevatron [1,2], and by the CMS and ATLAS Collaborations in pp collisions at √ s = 7 TeV at the LHC [3,4].…”

Section: Introductionmentioning

confidence: 99%

Measurement of dijet azimuthal decorrelation in pp collisions at $$\sqrt{s}=8\,\mathrm{TeV} $$ s = 8 TeV

Khachatryan¹,

Sirunyan²,

Tumasyan³

et al. 2016

Eur. Phys. J. C

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A measurement of the decorrelation of azimuthal angles between the two jets with the largest transverse momenta is presented for seven regions of leading jet transverse momentum up to 2.2. The analysis is based on the proton-proton collision data collected with the CMS experiment at a centre-of-mass energy of 8 corresponding to an integrated luminosity of 19.7. The dijet azimuthal decorrelation is caused by the radiation of additional jets and probes the dynamics of multijet production. The results are compared to fixed-order predictions of perturbative quantum chromodynamics (QCD), and to simulations using Monte Carlo event generators that include parton showers, hadronization, and multiparton interactions. Event generators with only two outgoing high transverse momentum partons fail to describe the measurement, even when supplemented with next-to-leading-order QCD corrections and parton showers. Much better agreement is achieved when at least three outgoing partons are complemented through either next-to-leading-order predictions or parton showers. This observation emphasizes the need to improve predictions for multijet production.

show abstract

Section: Introductionmentioning

confidence: 99%

Measurement of dijet azimuthal decorrelation in pp collisions at $$\sqrt{s}=8\,\mathrm{TeV} $$ s = 8 TeV

Khachatryan¹,

Sirunyan²,

Tumasyan³

et al. 2016

Eur. Phys. J. C

Self Cite

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show abstract

“…The measurement of azimuthal angular correlations (or decorrelation from π) in inclusive 2-jet topologies is a useful tool to test theoretical predictions of multijet production processes. Previous measurements of azimuthal correlation in inclusive 2-jet events were reported by the D0 Collaboration in pp collisions at √ s = 1.96 TeV at the Fermilab Tevatron [1,2], and by the ATLAS Collaboration in pp collisions at √ s = 7 TeV [3] and the CMS Collaboration in pp collisions at √ s = 7 and 8 TeV [4,5] at the LHC. Multijet correlations have been measured by the ATLAS Collaboration at √ s = 8 TeV [6,7].…”

Section: Introductionmentioning

confidence: 99%

Azimuthal correlations for inclusive 2-jet, 3-jet, and 4-jet events in pp collisions at $$\sqrt{s}= 13~\hbox {TeV}$$ s = 13 TeV

et al. 2018

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Azimuthal correlations between the two jets with the largest transverse momenta p T in inclusive 2-, 3-, and 4-jet events are presented for several regions of the leading jet p T up to 4 TeV. For 3-and 4-jet scenarios, measurements of the minimum azimuthal angles between any two of the three or four leading p T jets are also presented. The analysis is based on data from proton-proton collisions collected by the CMS Collaboration at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb −1 . Calculations based on leading-order matrix elements supplemented with parton showering and hadronization do not fully describe the data, so next-to-leading-order calculations matched with parton shower and hadronization models are needed to better describe the measured distributions. Furthermore, we show that azimuthal jet correlations are sensitive to details of the parton showering, hadronization, and multiparton interactions. A next-to-leading-order calculation matched with parton showers in the MC@NLO method, as implemented in herwig 7, gives a better overall description of the measurements than the powheg method.

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“…Azimuthal correlations in inclusive 2-jet events have been measured previously by the D0 Collaboration in collisions at a center-of-mass energy of [1, 2], in collisions by the ATLAS Collaboration at [3], and by the CMS Collaboration at , 8, and [4–6], but none of the measurements considered in detail the region close to the back-to-back configuration. A detailed study of azimuthal correlations close to the back-to-back configuration allows a more precise test of different resummation strategies, and it is a first step towards an improved understanding of the effects of soft initial and final state gluons [7, 8].…”

Section: Introductionmentioning

confidence: 99%

Azimuthal separation in nearly back-to-back jet topologies in inclusive 2- and 3-jet events in $${\text {p}} {\text {p}} $$ collisions at $$\sqrt{s}=13\,\text {Te}\text {V} $$

Sirunyan¹,

Tumasyan²,

Adam³

et al. 2019

Eur. Phys. J. C

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A measurement for inclusive 2- and 3-jet events of the azimuthal correlation between the two jets with the largest transverse momenta, , is presented. The measurement considers events where the two leading jets are nearly collinear (“back-to-back”) in the transverse plane and is performed for several ranges of the leading jet transverse momentum. Proton-proton collision data collected with the CMS experiment at a center-of-mass energy of and corresponding to an integrated luminosity of are used. Predictions based on calculations using matrix elements at leading-order and next-to-leading-order accuracy in perturbative quantum chromodynamics supplemented with leading-log parton showers and hadronization are generally in agreement with the measurements. Discrepancies between the measurement and theoretical predictions are as large as 15%, mainly in the region . The 2- and 3-jet measurements are not simultaneously described by any of models.

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Measurement of the combined rapidity and pT dependence of dijet azimuthal decorrelations in pp¯ collisions at

Cited by 11 publications

References 30 publications

Measurement of dijet azimuthal decorrelation in pp collisions at $$\sqrt{s}=8\,\mathrm{TeV} $$ s = 8 TeV

Measurement of dijet azimuthal decorrelation in pp collisions at $$\sqrt{s}=8\,\mathrm{TeV} $$ s = 8 TeV

Azimuthal correlations for inclusive 2-jet, 3-jet, and 4-jet events in pp collisions at $$\sqrt{s}= 13~\hbox {TeV}$$ s = 13 TeV

Azimuthal separation in nearly back-to-back jet topologies in inclusive 2- and 3-jet events in $${\text {p}} {\text {p}} $$ collisions at $$\sqrt{s}=13\,\text {Te}\text {V} $$

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