Study of the Top-Pion Production Processes pp(pp)→Π0tΠ0t,bΠ0t at the Hadron Colliders

CHEN Lan-Li; XU Wen-Na; WANG Xue-Lei

Chinese Physics C> 2007, Vol. 31> Issue(3) : 232-235

Study of the Top-Pion Production Processes pp(pp)→Π0tΠ0t,bΠ0t at the Hadron Colliders

College of Physics and Information Engineering, Henan Normal University, Xinxiang 453007, China2 Department of Electronics, Nanyang Institute of Technology, Nanyang 473004, China

Abstract
HTML
Reference
Related

PDF

Abstract：
In the framework of the topcolor-assisted Technicolor(TC2) model, the neutral top-pion (Π0t) production processes at hadron colliders(Tevatron and LHC), pp(pp)→Π0tΠ0t and pp(pp)→bΠ0t, are studied. The results show that the cross sections of these two processes at Tevatron are too small to observe Π0t. The cross sections can be significantly enhanced at LHC, but Π0t is also not observable via Π0tΠ0t production at LHC. The cross section of bΠ0t production reaches the level of a few hundred fb even a few pb at LHC and 10⁴—10⁵ events can be produced each year. Furthermore, Due to the existence of the flavor-changing coupling Π0t tc, Π0t can be experimentally detected via the decay mode Π0t tc with the clean background. Therefore, the enough distinguished Π0t events would be obtained via the bΠ0t production at LHC future experiments. Our study can provide the valuable theoretical information for probing neutral top-pion and testing TC2 model at LHC.

References

[1]

. Hill C T. Phys. Lett., 1995, B345: 483-4892. Susskind L. Phys. Rev., 1979, D20: 2619-26253. Buchalla G, Burdman G, Hill C T et al. Phys. Rev., 1996,D53: 5185-52004. YUE C X, XU Q J, LIU G L et al. Phys. Rev., 2001, D63:1150025. WANG X L, YANG Y L, LI B Z et al. Phys. Rev., 2002,D66: 075009; WANG X L, YANG Y L, LI B Z. Phys. Rev.,2004, D69: 055002; WANG X L, QIAO Q P, ZHANG QL. Phys. Rev., 2005, D71: 0950126. WANG X L, YANG Y L, LI B Z et al. Phys. Rev., 2002,D66: 0750137. WANG X L, LI B Z, YANG Y L. Phys. Rev., 2003, D68:115003; WANG X L, LI B Z, YANG Y L. Phys. Rev., 2003,D67: 0350058. WANG X L, WANG X X. Phys. Rev., 2005, D72: 0950129. WANG X L, YU L L, SONG N H et al. Commun. Theor.Phys., 2006, 45(3): 521-52610. HE H J, YUAN C P. Phys. Rev. Lett., 1999, 83: 28-3111. LU Gong-Ru, YIN Fu-Rong, WANG Xue-Lei et al. HEP NP, 2004, 28(4): 345-349 (in Chinese)(鲁公儒，殷复荣,王学雷等，高能物理与核物理， 2004, 28(4):345-349)

[1]	G. Kramer , H. Spiesberger . Λ_b⁰-baryon production in pp collisions in the general-mass variable-flavour-number scheme, and comparisonwith CMS and LHCb data. Chinese Physics C, 2018, 42(8): 083102. doi: 10.1088/1674-1137/42/8/083102
[2]	Bingfang Yang , Huaying Zhang , Biaofeng Hou , Ning Liu . T-odd top partner pair production in the dilepton final states at the LHC in the littlest Higgs Model with T-parity. Chinese Physics C, 2018, 42(10): 103102. doi: 10.1088/1674-1137/42/10/103102
[3]	R. Aaij , et al (LHCb Collaboration) . Study of the production of Λ_b⁰ and B⁰ hadrons in pp collisions and first measurement of the Λ_b⁰→J/ψpK^- branching fraction. Chinese Physics C, 2016, 40(1): 011001. doi: 10.1088/1674-1137/40/1/011001
[4]	FU Zai-Wei , QIAN Sen , NING Zhe , LIU Shu-Dong , CHEN Xiao-Hui , HENG Yue-Kun , WANG Yi-Fang , QI Ming , YANG Shuai , SUN Yong-Jie , SHAO Ming , LI Cheng , ZHENG Yang-Heng . Cosmic ray test for a T0 detector. Chinese Physics C, 2011, 35(10): 946-951. doi: 10.1088/1674-1137/35/10/011
[5]	WEN Jia , YUE Chong-Xing , LIU Jin-Yan , LIU Wei . Littlest Higgs model with T-parity and single top production in ep collisions. Chinese Physics C, 2009, 33(2): 89-93. doi: 10.1088/1674-1137/33/2/002
[6]	ZHANG Feng , ZHAO Guo-Ming , LI Yong-Sheng , WANG Li-Na . Top pair production in the littlest Higgs model with T-parity. Chinese Physics C, 2009, 33(1): 6-9. doi: 10.1088/1674-1137/33/1/002
[7]	YANG Hong-Xun (for the BESⅡ collaboration) . Partial wave analysis of J/ψ→ppπ⁰ and measurement of J/ψ→ppη, ppη´. Chinese Physics C, 2009, 33(12): 1331-1335. doi: 10.1088/1674-1137/33/12/048
[8]	ZHU Shi-Hai , YUE Chong-Xing , LIU Wei , DING Li . Production of the neutral top-pion π_t⁰ in association with a high-p_T jet at the LHC. Chinese Physics C, 2009, 33(9): 717-721. doi: 10.1088/1674-1137/33/9/002
[9]	ZHANG Gao-Long , YE Yan-Lin , JIANG Dong-Xing , ZHENG Tao , LI Zhi-Huan , LI Xiang-Qing , WU Cui-E , CHEN Zhi-Qiang , HU Qing-Yuan , PANG Dan-Yang , WANG Jia . Experimental Study of the t+t Structure in 6He. Chinese Physics C, 2005, 29(10): 940-943.
[10]	YUE Cong-Xing , YU Dong-Qi . Neutral top-pion and the Lepton Flavor Violating Processes. Chinese Physics C, 2005, 29(11): 1027-1032.
[11]	ZONG Hong-Jie , YUE Chong-Xing . Top-Pions and Single top Production at the HERA and THERA Colliders. Chinese Physics C, 2004, 28(6): 576-579.
[12]	HUANG Jin-Shu , PAN Qun-Na , SONG Tai-Ping , LU Lin-Xia . Associate Production of the top-Pion with b Quark Pair in TC2 Model at High Energy e⁺e^－ Colliders. Chinese Physics C, 2003, 27(7): 571-573.
[13]	BES Callaboration . Decay of the J/ψ to Σ⁰Σ⁰ Final State. Chinese Physics C, 2002, 26(2): 93-99.
[14]	YUE Chong-Xing , XU Qing-Jun , LIU Guo-Li . Production and Decay of the Neutral Top-Pion in High Energy e⁺e^－ Colliders. Chinese Physics C, 2002, 26(7): 672-677.
[15]	YUE Chong-Xing , LU Gong-Ru , LI Jian-Tao . Lightest Neutral Technipion⁰ and the First Muon Collider. Chinese Physics C, 2001, 25(12): 1140-1146.
[16]	LU Hong-Chao , ZOU Bing-Song . Theoretical Formalism of Partial Wave Analysis and Monte Carlo Simulation for pp→π⁰π⁰η. Chinese Physics C, 2001, 25(9): 812-820.
[17]	BES Collaboration . Study of J/ψ、γπ⁰π⁰ at BES. Chinese Physics C, 1999, 23(8): 745-752.
[18]	Wang Shaoshun , Wang Zhaomin , Liu Ran . Chaotic Behavior of Multiparticle Production in pp Collisions at 400GeV/c. Chinese Physics C, 1998, 22(10): 873-877.
[19]	LIN Jin-Hu , ZHENG Zhe-Zhu . THE HADRON 1→0 DECAY PROCESSESIN A 3+1 DIMENSIONAL THEORY. Chinese Physics C, 1986, 10(2): 153-157.
[20]	LI ZI-PING . APPROXIMATE SEQUENCE FOR U（t,t₀）-OPERATOR. Chinese Physics C, 1979, 3(4): 511-517.

Access

Get Citation

CHEN Lan-Li, XU Wen-Na and WANG Xue-Lei. Study of the Top-Pion Production Processes pp(pp)→Π0tΠ0t,bΠ0t at the Hadron Colliders[J]. Chinese Physics C, 2007, 31(3): 232-235.

CHEN Lan-Li, XU Wen-Na and WANG Xue-Lei. Study of the Top-Pion Production Processes pp(pp)→Π0tΠ0t,bΠ0t at the Hadron Colliders[J]. Chinese Physics C, 2007, 31(3): 232-235. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2006-06-23
Revised: 2006-06-28

Article Metric

Article Views(3044)
PDF Downloads(748)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Study of the Top-Pion Production Processes pp(pp)→Π0tΠ0t,bΠ0t at the Hadron Colliders

Corresponding author: WANG Xue-Lei,

College of Physics and Information Engineering, Henan Normal University, Xinxiang 453007, China2 Department of Electronics, Nanyang Institute of Technology, Nanyang 473004, China

Received Date: 2006-06-23

Accepted Date: 2006-06-28

Available Online: 2007-03-05

Abstract: In the framework of the topcolor-assisted Technicolor(TC2) model, the neutral top-pion (Π0t) production processes at hadron colliders(Tevatron and LHC), pp(pp)→Π0tΠ0t and pp(pp)→bΠ0t, are studied. The results show that the cross sections of these two processes at Tevatron are too small to observe Π0t. The cross sections can be significantly enhanced at LHC, but Π0t is also not observable via Π0tΠ0t production at LHC. The cross section of bΠ0t production reaches the level of a few hundred fb even a few pb at LHC and 10⁴—10⁵ events can be produced each year. Furthermore, Due to the existence of the flavor-changing coupling Π0t tc, Π0t can be experimentally detected via the decay mode Π0t tc with the clean background. Therefore, the enough distinguished Π0t events would be obtained via the bΠ0t production at LHC future experiments. Our study can provide the valuable theoretical information for probing neutral top-pion and testing TC2 model at LHC.

HTML

Reference (1)

Study of the Top-Pion Production Processes pp(pp)→Π0tΠ0t,bΠ0t at the Hadron Colliders

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article