Remaining parts of the long-standing J/ψ polarization puzzle

被引：25

作者：

Feng, Yu ^{[1
,2
]}

Gong, Bin ^{[3
,4
]}

Chang, Chao-Hsi ^{[2
,4
]}

Wang, Jian-Xiong ^{[3
,4
]}

机构：

[1] Army Med Univ, Coll Basic Med Sci, Dept Phys, Chongqing 400038, Peoples R China

[2] Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China

[3] Chinese Acad Sci, Inst High Energy Phys, POB 918 4, Beijing 100049, Peoples R China

[4] Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100190, Peoples R China

来源：

PHYSICAL REVIEW D | 2019年 / 99卷 / 01期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1103/PhysRevD.99.014044

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Based on the nonrelativistic quantum chromodynamics factorization formalism, the polarization parameters lambda(theta phi) and lambda(phi) of prompt J/psi hadroproduction for CMS and LHCb are analyzed in the helicity frame and calculated at QCD next-to-leading order for the first time. For prompt J/psi production, we take into account the feed-down contributions from chi(cJ) and psi(2S) decays. The theoretical predictions for the polarization parameters lambda(theta phi) and of J/psi are presented. Using the theoretical results, we perform a simultaneous fit to the experimental measurements of the yield and polarization of J/psi hadroproduction, and find that the results describe the experimental measurements at the LHC quite well.

引用

页数：8

共 34 条

[1]

Aaij R, 2015, EUR PHYS J C, V75, P1, DOI 10.1140/epjc/s10052-015-3502-x

[2]

Aaij R, 2014, EUR PHYS J C, V74, DOI 10.1140/epjc/s10052-014-2872-9

[3]

Aaij R, 2013, EUR PHYS J C, V73, DOI 10.1140/epjc/s10052-013-2631-3

[4]

Aaij R, 2011, EUR PHYS J C, V71, DOI 10.1140/epjc/s10052-011-1645-y

[5] J/ψ Polarization in pp Collisions at √s=7 TeV [J].

Abelev, B. ;

Quintana, A. Abrahantes ;

Adamova, D. ;

Adare, A. M. ;

Aggarwal, M. M. ;

Rinella, G. Aglieri ;

Agocs, A. G. ;

Agostinelli, A. ;

Aguilar Salazar, S. ;

Ahammed, Z. ;

Ahmad, N. ;

Masoodi, A. Ahmad ;

Ahn, S. U. ;

Akindinov, A. ;

Aleksandrov, D. ;

Alessandro, B. ;

AlfaroMolina, R. ;

Alici, A. ;

Alkin, A. ;

Almaraz Avina, E. ;

Alt, T. ;

Altini, V. ;

Altinpinar, S. ;

Altsybeev, I. ;

Andrei, C. ;

Andronic, A. ;

Anguelov, V. ;

Anson, C. ;

Anticic, T. ;

Antinori, F. ;

Antonioli, P. ;

Aphecetche, L. ;

Appelshaeuser, H. ;

Arbor, N. ;

Arcelli, S. ;

Arend, A. ;

Armesto, N. ;

Arnaldi, R. ;

Aronsson, T. ;

Arsene, I. C. ;

Arslandok, M. ;

Asryan, A. ;

Augustinus, A. ;

Averbeck, R. ;

Awes, T. C. ;

Aysto, J. ;

Azmi, M. D. ;

Bach, M. ;

Badala, A. ;

Baek, Y. W. .

PHYSICAL REVIEW LETTERS, 2012, 108 (08)

[6] Measurement of the t(t)over-bar production cross section in p(p)over-barcollisions at √s=1.96 TeV using kinematic fitting of b-tagged lepton plus jet events -: art. no. 072005 [J].

Acosta, D ;

Adelman, J ;

Affolder, T ;

Akimoto, T ;

Albrow, MG ;

Ambrose, D ;

Amerio, S ;

Amidei, D ;

Anastassov, A ;

Anikeev, K ;

Annovi, A ;

Antos, J ;

Aoki, M ;

Apollinari, G ;

Arisawa, T ;

Arguin, JF ;

Artikov, A ;

Ashmanskas, W ;

Attal, A ;

Azfar, F ;

Azzi-Bacchetta, P ;

Bacchetta, N ;

Bachacou, H ;

Badgett, W ;

Barbaro-Galtieri, A ;

Barker, GJ ;

Barnes, VE ;

Barnett, BA ;

Baroiant, S ;

Barone, M ;

Bauer, G ;

Bedeschi, F ;

Behari, S ;

Belforte, S ;

Bellettini, G ;

Bellinger, J ;

Ben-Haim, E ;

Benjamin, D ;

Beretvas, A ;

Bhatti, A ;

Binkley, M ;

Bisello, D ;

Bishai, M ;

Blair, RE ;

Blocker, C ;

Bloom, K ;

Blumenfeld, B ;

Bocci, A ;

Bodek, A ;

Bolla, G .

PHYSICAL REVIEW D, 2005, 71 (07) :1-11

[7] Inelastic photoproduction of polarized J/Ψ [J].

Beneke, M ;

Kramer, M ;

Vanttinen, M .

PHYSICAL REVIEW D, 1998, 57 (07) :4258-4274

[8] Fragmentation contributions to hadroproduction of prompt J/ψ, χcJ, and ψ(2S) states [J].

Bodwin, Geoffrey T. ;

Chao, Kuang-Ta ;

Chung, Hee Sok ;

Kim, U-Rae ;

Lee, Jungil ;

Ma, Yan-Qing .

PHYSICAL REVIEW D, 2016, 93 (03)

[9] Fragmentation Contributions to J/ψ Production at the Tevatron and the LHC [J].

Bodwin, Geoffrey T. ;

Chung, Hee Sok ;

Kim, U-Rae ;

Lee, Jungil .

PHYSICAL REVIEW LETTERS, 2014, 113 (02)

[10] RIGOROUS QCD ANALYSIS OF INCLUSIVE ANNIHILATION AND PRODUCTION OF HEAVY QUARKONIUM [J].

BODWIN, GT ;

BRAATEN, E ;

LEPAGE, GP .

PHYSICAL REVIEW D, 1995, 51 (03) :1125-1171

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