AN ULTRA-HIGH ENERGY NUCLEAR INTERACTION EVENT OF LARGE TRANSVERSE MOMENTUM

Ren Jing-ru; Lu Sui-ling; Su Sui; Wang Yun-xin; Wang Dian-chen; Pan Ji-rong; He Mao; ZHang Nai-jian; Cao Pei-yuan; Chen Yun-hong

Chinese Physics C> 1980, Vol. 4> Issue(3) : 349-355

AN ULTRA-HIGH ENERGY NUCLEAR INTERACTION EVENT OF LARGE TRANSVERSE MOMENTUM

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Abstract：
An emulsion chamber of 13 tons Pb was exposed on Mt. Kanbala (5500 m abovesea level) of Tibet. A very interesting ultra-high energy event with total observedenergy ΣE_Υ=445 TeV was obtained. The profile of the event is characterised by twogroups of high energy showers, separated clearly from each other. Preliminary analysisshows that the particles giving rise to these two shower groups have extraordina-rily large transverse momenta. This predicts the possible existence of a new mechanismin ultra-high energy nuclear interactions, which has certain characteristics differentfrom those predicted by the H-quantum and SH-quantum models.

References

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[3]	Cao Zhen , Ding Linkai . Chou-Yang Model for the Description of Ultrahigh Energy Soft Hadronic Interactions. Chinese Physics C, 1994, 18(11): 990-995.
[4]	FAN Xiao-Ling , ZHANG Chun-Sheng . Application of Hadron-Hadron Nuclear Interaction Parametrization Model in the Study of Superhigh Energy Cosmic Rays. Chinese Physics C, 1992, 16(4): 289-296.
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[13]	WANG Yun-Xin . ENERGY SPECTRUM OF SUPER HIGH ENERGY COSMIC RAY MUON SHOWERS OF LARGE ZENITH ANGLES. Chinese Physics C, 1986, 10(2): 245-248.
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[19]	XU ZAI-XIN , JIANG YUAN-FANG . POLARIZATION EFFECTS IN LARGE-pr PROMPT PHOTON PRODUCTION. Chinese Physics C, 1983, 7(6): 694-701.
[20]	DING LIN-KAI , ZHU QING-QI , GUO KE-ZHUN . CLUSTER PHENOMENA OBSERVED IN EMULSION CHAMBER EXPERIMENTS IN ENERGY REGION OF 10¹⁵—10¹⁶ eV AND HADRON JETS WITH LARGE TRANSVERSE MOMENTA. Chinese Physics C, 1982, 6(6): 657-664.

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Ren Jing-ru, Lu Sui-ling, Su Sui, Wang Yun-xin, Wang Dian-chen, Pan Ji-rong, He Mao, ZHang Nai-jian, Cao Pei-yuan and Chen Yun-hong. AN ULTRA-HIGH ENERGY NUCLEAR INTERACTION EVENT OF LARGE TRANSVERSE MOMENTUM[J]. Chinese Physics C, 1980, 4(3): 349-355.

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Received: 1979-04-21
Revised: 1900-01-01

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

AN ULTRA-HIGH ENERGY NUCLEAR INTERACTION EVENT OF LARGE TRANSVERSE MOMENTUM

Received Date: 1979-04-21

Accepted Date: 1900-01-01

Available Online: 1980-06-05

Abstract: An emulsion chamber of 13 tons Pb was exposed on Mt. Kanbala (5500 m abovesea level) of Tibet. A very interesting ultra-high energy event with total observedenergy ΣE_Υ=445 TeV was obtained. The profile of the event is characterised by twogroups of high energy showers, separated clearly from each other. Preliminary analysisshows that the particles giving rise to these two shower groups have extraordina-rily large transverse momenta. This predicts the possible existence of a new mechanismin ultra-high energy nuclear interactions, which has certain characteristics differentfrom those predicted by the H-quantum and SH-quantum models.

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AN ULTRA-HIGH ENERGY NUCLEAR INTERACTION EVENT OF LARGE TRANSVERSE MOMENTUM

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AN ULTRA-HIGH ENERGY NUCLEAR INTERACTION EVENT OF LARGE TRANSVERSE MOMENTUM

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