Nonperturbative-transverse-momentum effects and evolution in dihadron and direct photon-hadron angular correlations in p+p collisions at s =510 GeV

A Adare; C. Aidala; N. N. Ajitanand; Y. Akiba; R. Akimoto; J J Alexander; M. Alfred; V. Andrieux; K. Aoki; N Apadula; Y Aramaki; H. Asano; E. T. Atomssa; T. C. Awes; Carmen Ayuso; B. Azmoun; V. Babintsev; M Bai; X. Bai; N. S. Bandara; B Bannier; K N Barish; S Bathe; V. Baublis; C. Baumann; S. Baumgart; A Bazilevsky; M. Beaumier; S. Beckman; R Belmont; A Berdnikov; Y. Berdnikov; D Black; D. S. Blau; M. Boer; J S Bok; K Boyle; M L Brooks; J. Bryslawskyj; H Buesching; V. Bumazhnov; Christopher C. Butler; S. Butsyk; S. Campbell; V. Canoa Roman; R. Cervantes; P. Christiansen; A. Oskarsson; D. Silvermyr; E. Stenlund; PHENIX Collaboration

doi:10.1103/PhysRevD.95.072002

Nonperturbative-transverse-momentum effects and evolution in dihadron and direct photon-hadron angular correlations in p+p collisions at s =510 GeV

A Adare, C. Aidala, N. N. Ajitanand, Y. Akiba, R. Akimoto, J J Alexander, M. Alfred, V. Andrieux, K. Aoki, N Apadula, Y Aramaki, H. Asano, E. T. Atomssa, T. C. Awes, Carmen Ayuso, B. Azmoun, V. Babintsev, M Bai, X. Bai, N. S. BandaraB Bannier, K N Barish, S Bathe, V. Baublis, C. Baumann, S. Baumgart, A Bazilevsky, M. Beaumier, S. Beckman, R Belmont, A Berdnikov, Y. Berdnikov, D Black, D. S. Blau, M. Boer, J S Bok, K Boyle, M L Brooks, J. Bryslawskyj, H Buesching, V. Bumazhnov, Christopher C. Butler, S. Butsyk, S. Campbell, V. Canoa Roman, R. Cervantes, P. Christiansen, A. Oskarsson, D. Silvermyr, E. Stenlund, PHENIX Collaboration

Particle and nuclear physics

Research output: Contribution to journal › Article › peer-review

Abstract

Dihadron and isolated direct photon-hadron angular correlations are measured in p+p collisions at s=510 GeV. Correlations of charged hadrons of 0.7<pT<10 GeV/c with π0 mesons of 4<pT<15 GeV/c or isolated direct photons of 7<pT<15 GeV/c are used to study nonperturbative effects generated by initial-state partonic transverse momentum and final-state transverse momentum from fragmentation. The nonperturbative behavior is characterized by measuring the out-of-plane transverse momentum component pout perpendicular to the axis of the trigger particle, which is the high-pT direct photon or π0. Nonperturbative evolution effects are extracted from Gaussian fits to the away-side inclusive-charged-hadron yields for different trigger-particle transverse momenta (pTtrig). The Gaussian widths and root mean square of pout are reported as a function of the interaction hard scale pTtrig to investigate possible transverse-momentum-dependent evolution differences between the π0-h± and direct photon-h± correlations and factorization breaking effects. The widths are found to decrease with pTtrig, which indicates that the Collins-Soper-Sterman soft factor is not driving the evolution with the hard scale in nearly back-to-back dihadron and direct photon-hadron production in p+p collisions. This behavior is in contrast to Drell-Yan and semi-inclusive deep-inelastic scattering measurements.

Original language	English
Article number	072002
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	95
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevD.95.072002
Publication status	Published - 2017 Apr 1

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Subatomic Physics

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10.1103/PhysRevD.95.072002

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Adare, A., Aidala, C., Ajitanand, N. N., Akiba, Y., Akimoto, R., Alexander, J. J., Alfred, M., Andrieux, V., Aoki, K., Apadula, N., Aramaki, Y., Asano, H., Atomssa, E. T., Awes, T. C., Ayuso, C., Azmoun, B., Babintsev, V., Bai, M., Bai, X., ... PHENIX Collaboration (2017). Nonperturbative-transverse-momentum effects and evolution in dihadron and direct photon-hadron angular correlations in p+p collisions at s =510 GeV. Physical Review D - Particles, Fields, Gravitation and Cosmology, 95(7), Article 072002. https://doi.org/10.1103/PhysRevD.95.072002

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title = "Nonperturbative-transverse-momentum effects and evolution in dihadron and direct photon-hadron angular correlations in p+p collisions at s =510 GeV",

abstract = "Dihadron and isolated direct photon-hadron angular correlations are measured in p+p collisions at s=510 GeV. Correlations of charged hadrons of 0.7",

author = "A Adare and C. Aidala and Ajitanand, {N. N.} and Y. Akiba and R. Akimoto and Alexander, {J J} and M. Alfred and V. Andrieux and K. Aoki and N Apadula and Y Aramaki and H. Asano and Atomssa, {E. T.} and Awes, {T. C.} and Carmen Ayuso and B. Azmoun and V. Babintsev and M Bai and X. Bai and Bandara, {N. S.} and B Bannier and Barish, {K N} and S Bathe and V. Baublis and C. Baumann and S. Baumgart and A Bazilevsky and M. Beaumier and S. Beckman and R Belmont and A Berdnikov and Y. Berdnikov and D Black and Blau, {D. S.} and M. Boer and Bok, {J S} and K Boyle and Brooks, {M L} and J. Bryslawskyj and H Buesching and V. Bumazhnov and Butler, {Christopher C.} and S. Butsyk and S. Campbell and {Canoa Roman}, V. and R. Cervantes and P. Christiansen and A. Oskarsson and D. Silvermyr and E. Stenlund and {PHENIX Collaboration}",

year = "2017",

month = apr,

day = "1",

doi = "10.1103/PhysRevD.95.072002",

language = "English",

volume = "95",

journal = "Physical Review D - Particles, Fields, Gravitation and Cosmology",

issn = "2470-0010",

publisher = "American Physical Society",

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Adare, A, Aidala, C, Ajitanand, NN, Akiba, Y, Akimoto, R, Alexander, JJ, Alfred, M, Andrieux, V, Aoki, K, Apadula, N, Aramaki, Y, Asano, H, Atomssa, ET, Awes, TC, Ayuso, C, Azmoun, B, Babintsev, V, Bai, M, Bai, X, Bandara, NS, Bannier, B, Barish, KN, Bathe, S, Baublis, V, Baumann, C, Baumgart, S, Bazilevsky, A, Beaumier, M, Beckman, S, Belmont, R, Berdnikov, A, Berdnikov, Y, Black, D, Blau, DS, Boer, M, Bok, JS, Boyle, K, Brooks, ML, Bryslawskyj, J, Buesching, H, Bumazhnov, V, Butler, CC, Butsyk, S, Campbell, S, Canoa Roman, V, Cervantes, R, Christiansen, P , Oskarsson, A , Silvermyr, D , Stenlund, E & PHENIX Collaboration 2017, 'Nonperturbative-transverse-momentum effects and evolution in dihadron and direct photon-hadron angular correlations in p+p collisions at s =510 GeV', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 95, no. 7, 072002. https://doi.org/10.1103/PhysRevD.95.072002

Nonperturbative-transverse-momentum effects and evolution in dihadron and direct photon-hadron angular correlations in p+p collisions at s =510 GeV. / Adare, A; Aidala, C.; Ajitanand, N. N. et al.
In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 95, No. 7, 072002, 01.04.2017.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Nonperturbative-transverse-momentum effects and evolution in dihadron and direct photon-hadron angular correlations in p+p collisions at s =510 GeV

AU - Adare, A

AU - Aidala, C.

AU - Ajitanand, N. N.

AU - Akiba, Y.

AU - Akimoto, R.

AU - Alexander, J J

AU - Alfred, M.

AU - Andrieux, V.

AU - Aoki, K.

AU - Apadula, N

AU - Aramaki, Y

AU - Asano, H.

AU - Atomssa, E. T.

AU - Awes, T. C.

AU - Ayuso, Carmen

AU - Azmoun, B.

AU - Babintsev, V.

AU - Bai, M

AU - Bai, X.

AU - Bandara, N. S.

AU - Bannier, B

AU - Barish, K N

AU - Bathe, S

AU - Baublis, V.

AU - Baumann, C.

AU - Baumgart, S.

AU - Bazilevsky, A

AU - Beaumier, M.

AU - Beckman, S.

AU - Belmont, R

AU - Berdnikov, A

AU - Berdnikov, Y.

AU - Black, D

AU - Blau, D. S.

AU - Boer, M.

AU - Bok, J S

AU - Boyle, K

AU - Brooks, M L

AU - Bryslawskyj, J.

AU - Buesching, H

AU - Bumazhnov, V.

AU - Butler, Christopher C.

AU - Butsyk, S.

AU - Campbell, S.

AU - Canoa Roman, V.

AU - Cervantes, R.

AU - Christiansen, P.

AU - Oskarsson, A.

AU - Silvermyr, D.

AU - Stenlund, E.

AU - PHENIX Collaboration

PY - 2017/4/1

Y1 - 2017/4/1

N2 - Dihadron and isolated direct photon-hadron angular correlations are measured in p+p collisions at s=510 GeV. Correlations of charged hadrons of 0.7

AB - Dihadron and isolated direct photon-hadron angular correlations are measured in p+p collisions at s=510 GeV. Correlations of charged hadrons of 0.7

U2 - 10.1103/PhysRevD.95.072002

DO - 10.1103/PhysRevD.95.072002

M3 - Article

SN - 2470-0010

VL - 95

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

IS - 7

M1 - 072002

ER -

Nonperturbative-transverse-momentum effects and evolution in dihadron and direct photon-hadron angular correlations in p+p collisions at s =510 GeV

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